KR102611198B1 - A Fully Functional Universal Self-Chargeable Power Module and fabricating method - Google Patents

Abstract

A self-powered general-purpose power module and its manufacturing method are disclosed. A self-powered general-purpose power module according to an embodiment includes a hybrid energy harvester in the form of a mixture of an electromagnetic generator and a triboelectric nanogenerator, a battery charging circuit that charges the battery with power obtained through the hybrid energy harvester, and power storage. It includes a battery and a power transmitter that supplies power stored in the battery to the load.

Description

{A Fully Functional Universal Self-Chargeable Power Module and fabricating method}

The present invention relates to energy harvesting technology.

Multifunctional portable electronic devices containing various sensors are being used, and they require power sources that are small, lightweight, portable, and durable. Replaceable and rechargeable electrochemical batteries are suitable for powering these devices, but they have a limited lifespan, require replacement or recharging, and can cause environmental pollution due to battery disposal. Accordingly, energy harvesting technology can be utilized in various fields such as self-charging of portable/wearable electronic devices such as smart phones, earbuds, fitness devices, etc. by replacing these batteries, battery replacement power supplies, self-powered sensors, and various IoT. There is a lot of interest and research being done. However, achieving high output power while keeping existing energy harvester devices small remains a challenge.

According to one embodiment, a self-powered general-purpose power module that can be miniaturized and output power at high output is proposed.

A self-powered universal power module according to an embodiment includes a hybrid energy harvester in the form of a mixture of an electromagnetic generator and a triboelectric nanogenerator, a battery charging circuit that charges the battery with power obtained through the hybrid energy harvester, and power It includes a stored battery and a power transmitter that supplies power stored in the battery to a load.

The electromagnetic generator may include a magnet that is fixed at the center in an initial state and moves freely when external vibration is applied, a non-magnetic spring that hangs the magnet in a vertical axis direction, and a coil wound around the magnet.

The electromagnetic generator may further include a magnetic flux concentrator based on a soft magnetic material surrounding the coil to improve magnetic flux coupling of the coil.

The hybrid energy harvester may include a single spring formed in the upper section and a plurality of spacer springs formed in the lower section.

The hybrid energy harvester may include face springs formed in the upper section and the lower section, respectively. The face spring may be in the form of a non-magnetic zigzag.

The triboelectric nanogenerator is a sliding triboelectric nanogenerator and may include a first triboelectric material attached to a magnet and a second triboelectric material attached to the inner wall of the tube of the housing that accommodates the magnet.

The triboelectric nanogenerator is a contact-separation type triboelectric nanogenerator, and may include two triboelectric materials that attach electrodes to the top and bottom surfaces of the inside of the housing structure, respectively.

The triboelectric nanogenerator uses a combination of a sliding type triboelectric nanogenerator and a contact-separation type triboelectric nanogenerator, and the sliding type triboelectric nanogenerator uses a first triboelectric material attached to a magnet and a magnet. It includes a second triboelectric material attached to the inner wall of the tube of the housing, and the contact-separation type triboelectric nanogenerator includes two triboelectric materials attaching electrodes to the upper and lower surfaces of the inside of the housing structure, respectively. may include.

The triboelectric nanogenerator is a contact-separation type triboelectric nanogenerator with spring structures in a subsection and a lower section, respectively, and may include two triboelectric materials deposited on opposite sides of the spring structures, respectively.

Triboelectric nanogenerators can also serve as self-powered sensors that can detect vibration or movement.

A self-powered universal power module according to another embodiment includes an electromagnetic generator, a battery charging circuit that charges a battery with power obtained through the electromagnetic generator, a battery that stores power, and supplies power stored in the battery to a load. It includes a power transmitter that does.

The method of manufacturing a self-powered universal power module includes the steps of manufacturing an electromagnetic generator by hanging a magnet with a non-magnetic spring in the vertical axis direction and wrapping the magnet with a coil, attaching a first triboelectric charge material to the outside of the magnet, and attaching a second triboelectric charge material. Manufacturing an upper section containing a sliding triboelectric nanogenerator by attaching a material to the inner wall of the tube of the housing surrounding the magnet, positioning a plurality of spacer springs on the housing structure, and attaching a plurality of spacer springs to the upper and lower surfaces inside the housing structure. It may include manufacturing a lower section containing a contact-separation type triboelectric nanogenerator by attaching a triboelectric charge material to each surface.

A method of manufacturing a self-powered general-purpose power module includes the steps of manufacturing an electromagnetic generator by wrapping a magnet with a coil, attaching face springs to the upper and lower parts of the electromagnetic generator, and different friction on opposing surfaces of each face spring. It may include the step of attaching a charging material.

The self-powered general-purpose power module according to one embodiment has a wide range of applications in real environments and is capable of self-charging, miniaturization, portability, high output, and sustainable energy harvesting with good storage.

1 is a diagram showing the configuration of a self-powered general-purpose power module according to an embodiment of the present invention;
Figure 2 is a diagram showing the structure of a hybrid energy harvester based on S-TENG and C-TENG according to an embodiment of the present invention;
Figure 3 is a diagram showing the structure of a SP-TENG-based hybrid energy harvester according to an embodiment of the present invention;
Figure 4 is a diagram showing a self-powered general-purpose power module including a hybrid energy harvester based on S-TENG and C-TENG according to an embodiment of the present invention;
Figure 5 is a diagram showing a self-powered general-purpose power module including a SP-TENG-based hybrid energy harvester according to an embodiment of the present invention;
Figure 6 is a diagram illustrating various practical application examples of a self-powered general-purpose power module including an S-TENG and C-TENG based hybrid energy harvester according to an embodiment of the present invention;
Figure 7 is a diagram showing an example of a vehicle IoT application of a self-powered general-purpose power module according to an embodiment of the present invention;
Figure 8 is a diagram showing the operating principles of the EMG and S-TENG of the hybrid energy harvester according to an embodiment of the present invention;
Figure 9 is a diagram showing the operating principle of C-TENG and SP-TENG according to an embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In describing the embodiments of the present invention, if it is judged that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted, and the terms described below will be used in the embodiments of the present invention. These are terms defined in consideration of the function of , and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention illustrated below may be modified into various other forms, and the scope of the present invention is not limited to the embodiments detailed below. Examples of the present invention are provided to more completely explain the present invention to those skilled in the art.

Figure 1 is a diagram showing the configuration of a self-powered general-purpose power module according to an embodiment of the present invention.

Referring to Figure 1, the self-powered general-purpose power module 1 includes an electromagnetic generator (EMG, hereinafter referred to as 'EMG') 21 and a triboelectric nanogenerator (TENG, hereinafter referred to as 'TENG'). ) (22) is a packaged module that includes a hybrid energy harvester (10), a power management circuit (12), a battery charging circuit (14), a battery (16), and a power transmission unit (18).

The hybrid energy harvester 10 consists of EMG and TENG, and can operate simultaneously to produce high-output electricity with a single movement.

The EMG (21) includes a freely moving magnet and a coil that induces current when the magnet moves, and generates electrical energy when external vibration occurs. External vibration may be biomechanical energy generated through natural human body movements such as hand shaking, walking, running, riding a bicycle, etc. In this case, highly efficient energy can be harvested from various human vibrations. Because human body movements occur at low frequencies below 10Hz, high output power can be produced even at low frequencies.

The EMG 21 can improve output by additionally using a magnetic flux concentrator made of soft magnetic material.

TENG (22) generates electrical energy during external vibration through contact-separation or sliding of two triboelectric materials. The TENG 22 may be a contact-separation type TENG (hereinafter referred to as 'C-TENG') or a sliding type TENG (hereinafter referred to as 'S-TENG'). A mixed form of C-TENG and S-TENG is also possible. The TENG 22 may be a contact-separation type TENG (hereinafter referred to as 'SP-TENG') with a spring structure. Springs generate elastic shock. TENG 22 can improve output performance by manufacturing the surface of the triboelectric material into a nanostructure.

The TENG (22) not only supplies power, but can also serve as a self-powered sensor that can detect vibration or movement.

The hybrid energy harvester 10 includes a spring-mass system, which uses mechanical coupling through multiple spring-mass systems to widen the operating frequency bandwidth and increase output. The material of the spring can be non-magnetic material or plastic. All spring structures, including the non-magnetic springs of the S-TENG and C-TENG, and the spring-structured SP-TENG, provide the hybrid energy harvester 10 with a multi-spring mass system, widening the operating frequency bandwidth and the return speed of the upper spring. can increase.

The main body of the hybrid energy harvester 10 can be manufactured through 3D printing and machining, including 3D injection and extrusion methods.

The self-powered universal power module 1 stores the power obtained by the battery charging circuit 14 through the hybrid energy harvester 10 in the battery 16, and transmits the power stored in the battery 16 through the power transmitter 18. supply to the load. The power transmitter 18 may be a USB outlet. Loads may be electronic devices, sensors, etc. The power management circuit 12 manages power generated from the hybrid energy harvester.

Meanwhile, the self-powered general-purpose power module 1 in FIG. 1 shows a hybrid energy harvester 10 combining the EMG 21 and the TENG 22, but is also configured to have only the EMG 21 without the TENG 22. possible. In this case, the EMG 21 serves to supply power alone.

Figure 2 is a diagram showing the structure of a hybrid energy harvester based on S-TENG and C-TENG according to an embodiment of the present invention.

Referring to FIG. 2, the EMG 21 hangs a magnet 210 with a non-magnetic spring 212 in the vertical axis direction and winds coils 214a and 214b around the body according to the position of the magnet 210. For example, EMG is configured by wrapping two coils 214a and 214b around the body at positions corresponding to the top and bottom of the magnet 210. The magnet 210 may be cylindrical, but its shape is not limited thereto.

Initially, the magnet 210 is located in the middle of the two coils 214a and 214b so that the upper and lower poles of the magnet 210 are located in the center of the coils 214a and 214b. This alignment of coils 214a, 214b helps couple more magnetic flux in coils 214a, 214b because the magnetic flux density is higher at the axially magnetized poles of magnet 210.

Coils 214a, 214b can be positioned to match the top and bottom positions of magnet 210, which allows more magnetic flux in coils 214a, 214b because the magnetic flux density is higher at the poles of axial magnet 210. It can induce change. The gap between the two coils 214a and 214b minimizes the resistance of the entire coil, and the resulting magnetic pole can have an effect on a single coil.

The S-TENG (22a) attaches first triboelectric materials (220a, 220b) to which electrodes are attached to the upper and lower edges of the magnet (210). Next, a second triboelectric material is attached along with the electrode 222 to the inner wall of the tube of the 3D printed housing.

The C-TENG (22b) separates the C-TENG structures by placing a plurality of spacer springs 230 in the 3D housing. Next, each triboelectric material (231, 232) is attached to the inner top and bottom surfaces of the C-TENG structure.

The hybrid energy harvester may be a mixture of EMG (21), S-TENG (22a), and C-TENG (22b). When using a mixture of S-TENG (22a) and C-TENG (22b), one of the two triboelectric materials constituting the S-TENG (22a) is the magnet (210) constituting the EMG (21). ) is attached to the side of the electrode, and an electrode 222 engaged with another triboelectric material can be attached.

The spring structure may include plastic materials or non-magnetic metals and alloys, including stainless steel.

The tribocharged material includes a first tribocharged material and a second tribocharged material. The first tribocharged material may be negative and the second tribocharged material may be positive, or the first tribocharged material may be positive and the second tribocharged material may be negative. Each triboelectric material can have surface microstructures and surface nanostructures formed. The electrode used for each triboelectric material may include a conductive material (gold (Au), Ag (silver), Pt (platinum), copper (Cu), aluminum (Al), etc.) and a conductive polymer.

Hereinafter, the manufacturing methods of EMG, S-TENG, and C-TENG will be described later.

First, a 3D printer is used to manufacture the body and housing including the hybrid energy harvester, power management circuit, battery charging circuit, battery, and power transmitter.

According to the EMG manufacturing method, a cylindrical magnet is hung with a non-magnetic spring in the vertical axis direction and a coil is wound around the body according to the position of the cylindrical magnet. For example, EMG is constructed by wrapping two coils around the body at positions corresponding to the top and bottom of a cylindrical magnet. Initially, the magnet is positioned in the middle of the two coils so that the top and bottom poles of the magnet are located in the center of the coil. This alignment of the coils helps couple more magnetic flux in the coil because the magnetic flux density is higher at the axially magnetized poles of the magnet.

Next, a magnetic flux concentrator based on soft magnetic material is manufactured to improve the magnetic flux coupling of the coil. As an example of a magnetic flux concentrator manufacturing method, a polydimethylsiloxane (PDMS) mixture is produced by mixing elastomer and curing agent at a weight ratio of 10:1. Mix FeSiCr powder into the PDMS mixture to obtain a PDMS/FeSiCr mixture. The obtained PDMS/FeSiCr mixture is then spin-coated and cured using an oven.

Next, the manufactured magnetic flux concentrator is wrapped with a coil between the body and the housing.

According to the S-TENG manufacturing method, the first triboelectric material to which electrodes are attached is attached to the top and bottom edges of the cylindrical magnet. Next, a second triboelectric material is attached along with an electrode to the inner wall of the tube of the 3D printed housing.

According to the C-TENG manufacturing method, the C-TENG structures are spaced apart by placing a plurality of spacer springs in the 3D housing. Next, each triboelectric material is attached to the inner top and bottom surfaces of the C-TENG structure.

Figure 3 is a diagram showing the structure of a SP-TENG-based hybrid energy harvester according to an embodiment of the present invention.

Referring to Figure 3, the SP-TENG based hybrid energy harvester includes an EMG, SP-TENG, a battery charging circuit 14, a battery 16, and a power transmitter 18, and the EMG uses a magnet 210 and a coil. The SP-TENG includes spring structures 30a and 30b formed at the top and bottom of the EMG, respectively, and electrodes 34. The spring structures (30a, 30b) may be non-magnetic zigzag-shaped surface springs, and an SP-TENG can be manufactured by depositing two triboelectric materials (31, 32) on opposing surfaces of the spring structures (30a, 30b). there is. The spring structures 30a and 30b may include plastic materials or non-magnetic metals and alloys including stainless steel.

According to the SP-TENG manufacturing method, a multi-layer spring structure 30 is manufactured using 3D printing. Next, different triboelectric materials 31 and 32 are attached to each opposing surface of the 3D printed spring structure 30.

Figure 4 is a diagram illustrating a self-powered general-purpose power module including a hybrid energy harvester based on S-TENG and C-TENG according to an embodiment of the present invention.

In more detail, Figure 4 shows a mixture of EMG, S-TENG, and C-TENG.

1 and 4, the self-powered general-purpose power module 1 includes a hybrid energy harvester 10, a battery charging circuit 14, a battery 16, and a power transmitter 18, and the hybrid energy harvester (10) may be a mixture of EMG, S-TENG, and C-TENG. For example, the hybrid energy harvester 10 includes a magnet (210), a non-magnetic spring (212), a spacer spring (230), a coil (Coil/Cu) (214a, 214b), First triboelectric material (220a, 220b), second triboelectric material (224), first electrode (222), second electrode (233), third electrode (234), third triboelectric material (231), It may include a fourth triboelectric charge material (232).

At this time, the magnet 210 and the coils 214a and 214b may constitute the EMG 21. The first triboelectric material (220a, 220b), the second triboelectric material (224), and the non-magnetic spring 212 may constitute the S-TENG (22a). The third triboelectrically charged material 231 and the fourth triboelectrically charged material 232 may constitute the C-TENG (22b). When triboelectric materials are used, current flows due to the triboelectric effect, which can be used to generate power.

The EMG (21) and S-TENG (22a) are located in the upper section of the self-powered universal power module (1).

In order to improve the output of the hybrid energy harvester 10, the EMG 21 is attached around the coil 214 and concentrates the magnetic flux to increase the amount of current in the coil 214 and reduce the magnetic effect from outside the device. It may further include a flux concentrator (FC) (216). The magnetic flux concentrator 216 allows a higher magnetic flux density to be concentrated inside the coil 214 than the residual magnetic flux. The magnetic flux concentrator 216 increases the magnetic flux area of the coil 214 to maximize magnetic flux leakage toward the coil 214. The magnetic flux concentrator 216 can not only improve the power generation ability of the EMG 21 but also reduce stray magnetic fields.

The hybrid energy harvester 10 uses a multi-spring structure to widen the operating frequency bandwidth and obtain high output. For example, as shown in FIG. 4, a single large spring 212 is located on one side, and a plurality of (for example, four) small spacer springs 230 are located on the other side.

In the case of the S-TENG (22a), two first triboelectric materials (220a, 220b) of the same width are wound around the upper and lower edges of the magnet (210). The two first triboelectric materials 220a and 220b may be nano-glass Al strips.

On the inner wall of the housing tube formed outside the magnet 210 of the S-TENG (22a), a thin second triboelectric material 224, which has a nano-structured surface and an electrode 222 on the opposite side, is double-sidedly adhered. Can be attached using tape. The second triboelectric material 224 may be a PTFE film.

Here, the first triboelectric material 220a and 220b may serve as an electrode as well as the triboelectric material of the positive electrode, and the second triboelectric material 224 may serve as the triboelectric material of the negative electrode. As the magnet 210 moves during excitation, the first triboelectric material 220a, 220b slides across the surface of the second triboelectric material 224, eventually generating a triboelectric voltage through the interlocked electrodes. . This pair of first triboelectric materials (220a, 220b) and second triboelectric materials (224) with electrodes interlocked with each other forms the S-TENG (22a).

A C-TENG (22b) is located in the bottom section of the self-powered universal power module (1). C-TENG (22b) can be used as a mutual triboelectric material pair in which electrospun nanofiber mats of the third triboelectric material 231 and the fourth triboelectric material 232 are separated by a plurality of spacer springs 230. there is. The third triboelectric material 231 may be nylon, and the fourth triboelectric material 232 may be PVDF.

When the magnet 210 to which the spring 212 is attached moves due to external vibration, it pushes down on the upper panel of the C-TENG (22b). During this time, C-TENG 22b not only generates triboelectric voltage but also constitutes a mechanical coupling between the upper and lower spring mass systems. This mechanical coupling helps widen the operating bandwidth of the self-powered universal power module (1) and increases the return speed of the upper spring (212).

Figure 5 is a diagram showing a self-powered general-purpose power module including a SP-TENG-based hybrid energy harvester according to an embodiment of the present invention.

Referring to Figure 5, the hybrid energy harvester uses a multi-spring structure to widen the operating frequency bandwidth and obtain high output. For example, zigzag-shaped surface springs 30a and 30b are located on both sides, respectively.

SP-TENG with a multi-spring structure can provide a multi-spring mass system to the hybrid energy harvester 10, widening the operating frequency bandwidth and increasing the return speed of the upper spring 30a.

Figure 6 is a diagram showing various practical application examples of a self-powered general-purpose power module including an S-TENG and C-TENG based hybrid energy harvester according to an embodiment of the present invention.

Referring to FIG. 6, a self-powered general-purpose power module including a hybrid energy harvester can obtain high-output electricity from low-frequency vibration bands such as walking and exercise, waves, and vehicle movement. For example, as shown in Figure 6, the proposed self-powered universal power module can be used to harvest Blue Energy, Human Biomechanical Energy, and Automobile Vibration Energy. You can.

The self-powered universal power module provides charging for portable/wearable electronic devices, self-powered ocean water health monitoring, and self-powered in-car environment monitoring. can be used for

Figure 7 is a diagram illustrating an example of a vehicle IoT application of a self-powered general-purpose power module according to an embodiment of the present invention.

In more detail, (a) the concept of USPM for a wireless in-vehicle environmental monitoring system self-powered by vehicle vibration harvesting, (b) vibration acceleration values tested on different types of roads. (c) Open-circuit output voltage of the hybrid energy harvester measured on different types of roads. (d) Vibration acceleration values tested at various locations inside the vehicle. (e) Open-circuit output voltage of the hybrid energy harvester measured at several locations inside the car. (f) Output regulation voltage of USPM (top) and 30 mAh Li-Po battery charging performance of USPM (bottom) under vehicle vibration. (g) Shows a photo of the experimental setup to demonstrate a self-powered wireless in-vehicle environmental (temperature, humidity, and barometric pressure) monitoring system.

(b) shows different accelerations tested on different types of roads, such as main road, local road, and unpaved road. Roads with more potholes and speed breakers generate enormous vibration displacements and accelerations, resulting in high output voltage peaks. The output open circuit voltage of the hybrid energy harvester measured on different types of roads is shown in (c). Unpaved roads have higher acceleration peaks compared to national and main roads, and this is similarly reflected in the output voltage. The vibration characteristics are different at different locations inside the vehicle. The passenger seat, including the driver's seat, experiences less vibration. Also, as shown in (d), the dash, floor, door, and trunk have different accelerations and frequencies. Among these locations, relatively high vibration accelerations were observed in the trunk.

The output open circuit voltage of the hybrid energy harvester measured at various locations inside the car is shown in (e). The adjusted DC output voltage of the USPM device measured under vehicle vibration is shown in (f) (top). Additionally, the 30mAh Li-Po battery charging performance is performed and the results are shown in (f) (bottom). Additionally, a self-powered wireless in-vehicle environmental monitoring system will be demonstrated. For this purpose, temperature, humidity and pressure are monitored using commercial sensors. As shown in (g), the self-powered general-purpose power module generates voltage from vehicle vibration, supplies power to circuits, sensors, and BLE devices, and wirelessly transmits sensor data to the smartphone. Therefore, a self-powered general-purpose power module can implement a completely self-powered wireless in-vehicle environmental monitoring system that can eliminate wasted automobile vibration energy.

Figure 8 is a diagram showing the operating principles of the EMG and S-TENG of the hybrid energy harvester according to an embodiment of the present invention, and Figure 9 is a diagram showing the operating principles of the C-TENG and SP-TENG according to an embodiment of the present invention. This is a drawing showing.

Referring to Figures 8 and 9, the hybrid energy harvester can exhibit four main operating states (stage i, stage ii, stage iii, stage iv).

In stage i, the EMG and TENG in the initial position are stationary. Therefore, there is no magnetic flux variation inside the coil of the EMG, and no charge is generated in the triboelectric material of the TENG.

In step ii, when the hybrid energy harvester receives mechanical force from the outside, the magnet of the EMG begins to move in one vertical direction inside the body, and at this time, a charge is generated by sliding the triboelectric material of the S-TENG and a current flows. do. The movement of the magnet causes a change in the distribution of magnetic flux through the coil, causing an induced current to begin to flow in the coil.

Depending on the movement of the magnet until step iii, the EMG and S-TENG produce electricity in the same way. Additionally, electric charges are generated due to contact between the triboelectric materials of C-TENG and SP-TENG.

In step iv, when the magnet moves in a different direction, the pairs of triboelectric materials that were in contact in the C-TENG and SP-TENG are separated, causing triboelectric charge to be induced and a current to flow, in the opposite direction to steps ii and iii through the movement of the magnet. Current is induced in the coil. For example, under external vibration, when a spring with a magnet is pulled down, the current flowing in the coil flows clockwise as in step ii, and similarly, when the magnet moves upward, the current direction in the coil changes counterclockwise as in step iii.

Afterwards, steps ii to iv are repeated according to the movement of the magnet, and power is produced from EMG, S-TENG, C-TENG, and SP-TENG.

So far, the present invention has been examined focusing on its embodiments. A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

Claims (14)

top section; and
bottom section; Including,
The top section is
magnet; and a single non-magnetic spring formed on top of the magnet. An electromagnetic generator comprising: and
A first sliding triboelectric nanogenerator; Including,
The bottom section is
a plurality of spacer springs; A second triboelectric nanogenerator of a contact-separation type including;
a battery charging circuit that charges a battery with power obtained through a hybrid energy harvester including the electromagnetic generator and first and second triboelectric nanogenerators;
a battery in which power is stored; and
a power transmission unit that supplies power stored in the battery to a load; Includes,
A self-powered general-purpose power module characterized in that the size of the non-magnetic spring is larger than the spacer spring. The method of claim 1, wherein the electromagnetic generator
In its initial state, a magnet is fixed in the center and moves freely when external vibrations are applied;
A non-magnetic spring that hangs the magnet in a vertical axis direction;
A coil winding the magnet;
A self-powered general-purpose power module comprising: The method of claim 2, wherein the electromagnetic generator
A magnetic flux concentrator based on a soft magnetic material surrounding the coil to improve the magnetic flux coupling of the coil;
A self-powered general-purpose power module further comprising: delete delete delete The method of claim 1, wherein the first triboelectric nanogenerator is
A first triboelectric charge material attached to the magnet; and
a second triboelectric charge material attached to the inner wall of the tube of the housing accommodating the magnet;
A self-powered general-purpose power module comprising: The method of claim 1, wherein the second triboelectric nanogenerator is
Two triboelectric materials attaching electrodes to the upper and lower surfaces of the interior of the housing structure, respectively;
A self-powered general-purpose power module comprising: delete delete The method of claim 1, wherein the first and second triboelectric nanogenerators
A self-powered general-purpose power module that also functions as a self-powered sensor that can detect vibration or movement. delete Manufacturing an electromagnetic generator by hanging a magnet in the vertical axis direction with a single non-magnetic spring and wrapping the magnet with a coil;
Attaching a first triboelectric material to the outside of the magnet and attaching a second triboelectric material to the inner wall of the tube of the housing surrounding the magnet to manufacture an upper section including a sliding first triboelectric nanogenerator;
manufacturing a lower section including a contact-separation type second triboelectric nanogenerator by placing a plurality of spacer springs in the housing structure and attaching triboelectric materials to the upper and lower surfaces of the housing structure, respectively; and
In the lower section, a battery charging circuit that charges a battery with power obtained through a hybrid energy harvester including the electromagnetic generator and the first and second triboelectric nanogenerators, a battery in which power is stored, and the power stored in the battery. providing a power transmitter to supply power to a load; Includes,
A method of manufacturing a self-powered general-purpose power module, characterized in that the size of the non-magnetic spring is larger than the spacer spring. delete