KR20200135140A - WEARABLE WIRELESS CHARGER and method for generating the electric energy using the same - Google Patents

Abstract

The portable wearable wireless charging device according to the present disclosure includes an energy generating unit including a rotating magnetic disk provided with a plurality of permanent magnets alternately arranged around a central axis, and at least one energy storage for storing energy generated in the energy generating unit And one or more energy transmission and charging units for transmitting the energy stored in the unit and the at least one energy storage unit to an external device, wherein the energy generating unit is a thermoelectric unit that collects heat transferred from the outside and converts it into electrical energy, and the rotation An electromagnetic unit that converts electric energy from an electromagnetic field generated by a magnetic disk, a friction electric unit that converts static electricity generated by friction with the rotating magnetic disk into electrical energy, and vibration induced from the rotational movement of the rotating magnetic disk. It may include a piezoelectric unit that collects and converts it into electrical energy.

Description

Portable wearable wireless charging device and method for generating electric energy using the same {WEARABLE WIRELESS CHARGER and method for generating the electric energy using the same}

The present invention relates to a portable wearable wireless charging device used in a mobile device and a method of generating electric energy using the same.

Mobile devices such as smartphones and tablets are a necessity for consumers to make phone calls, listen to music, and connect to the Internet. However, depending on the battery capacity, the use of the mobile device may be limited. The mobile device needs to be regularly charged using an external power source, but users cannot always use the external power source. In addition, you will need accessories such as connecting cables to charge your mobile device. Therefore, it is necessary to wirelessly charge mobile devices anytime, anywhere.

In emergency situations where access to the charging terminal may not be possible, it is desirable to provide a self-contained and portable charging method for mobile devices. Instant access to wireless charging can be provided by such a charging method, and securing immediate access to wireless charging solves undesirable problems that may be caused by usability impairments of mobile devices.

US20140375246A1 provides a wireless charging device that can be worn on the user's wrist. The wireless charging device includes one or more energy collection units capable of collecting energy of the surrounding area and converting the collected energy of the surrounding area into electrical energy. The electric energy described above may be transmitted to the mobile device for charging.

The system and method according to various embodiments of the present disclosure may provide a more enhanced and efficient solution to a portable wearable wireless charging device and a method of generating electric energy using the same.

It provides a portable wearable wireless charging device capable of generating electric energy on its own even in a place without an external power source, and a method of generating electric energy using the same.

In addition, it provides a portable wearable wireless charging device that can efficiently use energy resources by collecting external energy that is extinguished by itself and converting it into electrical energy, and a method of generating electrical energy using the same.

In addition, it provides a portable wearable wireless charging device that a user can wear and carry, and a method of generating electric energy using the same.

In addition, there is provided a portable wearable wireless charging device capable of supplying power to an external device by transmitting electric energy generated by itself to an external device, and a method of generating electrical energy using the same.

A portable wearable wireless charging device according to an example includes an energy generating unit including a rotating magnetic disk provided with a plurality of permanent magnets alternately arranged around a central axis, and at least one energy for storing energy generated in the energy generating unit A storage unit and at least one energy transmission and charging unit for transmitting energy stored in the at least one energy storage unit to an external device, wherein the energy generating unit includes a thermoelectric unit configured to collect heat transferred from the outside and convert it into electric energy, the An electromagnetic part that converts electrical energy from an electromagnetic field generated by a rotating magnetic disk, a triboelectric part that converts static electricity generated by friction with the rotating magnetic disk into electrical energy, and a vibration induced from rotational movement of the rotating magnetic disk It may include a piezoelectric unit that collects and converts it into electrical energy.

It may further include a ring-shaped case portion having a circular or semi-circular cross-section that can be worn on the user's finger.

The thermoelectric unit may be disposed along a circumference of an inner portion of the case unit disposed to face the user's skin.

The vibration induced from the rotational motion of the rotating magnetic disk may be generated from a magnetic force generated from a plurality of magnets included in the rotating magnetic disk and a magnet to which the piezoelectric part is attached.

Vibration induced from the rotational motion of the rotating magnetic disk may be generated by a collision between the rotating magnetic disk and the piezoelectric unit.

The at least one energy transmission and charging unit may be disposed along a circumference of an outer portion of the case.

It may further include a rotation starter capable of applying a rotational force to the rotating magnetic disk.

One magnetic pole of the magnet provided in the rotating magnetic disk is arranged to face the bottom surface of the rotating magnetic disk, and the other magnetic pole of the magnet is an outer edge of the rotating magnetic disk or the center of the rotating magnetic disk. It may be arranged to face in any of the directions.

A method of generating electric energy using a portable wearable wireless charging device includes the steps of collecting heat transmitted from the outside using the thermoelectric unit and converting it into electric energy, and electricity from an electromagnetic field generated by the rotating magnetic disk using the electromagnetic unit. Converting energy, converting static electricity generated by friction with the rotating magnetic disk using the triboelectric unit into electrical energy, collecting vibration induced from the rotational movement of the rotating magnetic disk using the piezoelectric unit And converting it into electrical energy, storing the generated electrical energy using the at least one energy storage unit, and transmitting the stored electric energy using the at least one energy transmission and charging unit.

The thermoelectric unit may be disposed to face the user's skin to collect heat applied from the user.

The vibration induced from the rotational motion of the rotating magnetic disk may be generated from a magnetic force generated from a plurality of magnets included in the rotating magnetic disk and a magnet to which the piezoelectric part is attached.

Vibration induced from the rotational motion of the rotating magnetic disk may be generated by a collision between the rotating magnetic disk and the piezoelectric unit.

It may further include applying a rotational force to the rotating magnetic disk using a rotation starter.

One magnetic pole of the magnet provided in the rotating magnetic disk is arranged to face the bottom surface of the rotating magnetic disk, and the other magnetic pole of the magnet is an outer edge of the rotating magnetic disk or the center of the rotating magnetic disk. It may be arranged to face in any of the directions.

The portable wearable wireless charging device and the electric energy generation method using the same according to the present disclosure may generate electric energy by itself even in a place where there is no external power source.

In addition, a portable wearable wireless charging device and a method of generating electric energy using the same can efficiently use energy resources by collecting external energy that is extinguished by itself and converting it into electric energy.

In addition, a portable wearable wireless charging device and a method of generating electric energy using the same can secure user convenience because a user can wear and carry it.

In addition, the portable wearable wireless charging device and the electric energy generation method using the same may supply power to the external device by transferring the self-generated electric energy to the external device.

1 is a block diagram of a portable wearable wireless charging device according to an embodiment of the present disclosure.
2 is a flowchart of generating electric energy using a portable wearable wireless charging device according to an embodiment of the present disclosure.
3A is a schematic perspective view of a portable wearable wireless charging device according to an embodiment of the present disclosure.
3B is a schematic side view of a portable wearable wireless charging device according to an embodiment of the present disclosure.
3C is a schematic perspective view of a portable wearable wireless charging device according to an embodiment of the present disclosure.
4 is a flowchart of transmitting and charging electric energy using a portable wearable wireless charging device according to an embodiment of the present disclosure.
5 is a flowchart illustrating movement of energy in a portable wearable wireless charging device according to an embodiment of the present disclosure.
6A and 6B are perspective views illustrating a portable wearable wireless charging device according to an embodiment of the present disclosure.

The following are definitions of terms used in various embodiments of the present invention.

The "energy generating unit" used in any device of the present specification may collect arbitrary energy (thermal energy, mechanical energy, etc.) and convert it into electrical energy.

The "thermoelectric component" used in any device of the present specification may collect energy based on a temperature difference and convert the collected energy into electrical energy. The substances included in the thermoelectric part include, for example, bismuth chalcogenides and their nanostructures, lead telluride, inorganic clathrates, magnesium (mg) and compounds of group 4 elements. , Skutterudite thermoelectric, oxide thermoelectric, half-heusler alloys, electrically conductive organic materials, silicon germanium, sodium cobaltate, amorphous materials and tin sele Nide (tin selenide) may be included, but the present disclosure is not limited thereto.

The "electromagnetic component" used in any device of the present specification collects energy formed based on the generation of a potential difference across the conductor when the conductor is exposed to a variable magnetic field, and the collected energy is converted into electrical energy. Convert to

The "triboelectric component" used in any of the devices herein collects energy based on friction and static electricity, and converts the collected energy into electrical energy. Materials included in the triboelectric section include, for example, fluoroplastic polytetrafluoroethylene (PTFE), polydimethylsiloxane (PDMS), fluorinated ethylene propylene (FEP)) and Solid polymer electrolytes (SPEs) may be included, but the present disclosure is not limited thereto.

The "energy storage" used in any of the devices herein stores electrical energy. The energy storage unit is, for example, a lead acid battery, a nickel-cadmium battery, a nickel-hydrogen alloy battery, a nickel-ion battery, a lithium ion polymer battery, a flow battery, a supercapacitor, and an ultracapacitor. It may be an electrochemical cell including one or more, but the present disclosure is not limited thereto.

The "energy transmission and charging unit" used in any device herein transmits or provides electrical energy to an external device to charge the external device. Electrical energy may be provided to charge the battery of a mobile device, for example. Charging may be performed wirelessly (eg, induction charging, etc.) or wired (eg, USB, USB-C, lightning cable, thunderbolt, etc.).

The "piezoelectric part" used in any of the devices herein collects vibrational energy and converts the collected vibrational energy into electrical energy. Materials included in the piezoelectric part include, for example, synthetic crystals, synthetic ceramics, lead-free piezoceramics, III-V and II-VI semiconductors (III- V and II-VI semiconductors), polymers, and organic nanostructures may be included, but the present disclosure is not limited thereto.

1 is a block diagram of a portable wearable wireless charging device according to an example of the present disclosure. Referring to FIG. 1, a portable wearable wireless charging device according to an example may include a thermoelectric unit 100, an electromagnetic unit 102, a triboelectric unit 104, and a piezoelectric unit 106. As an example, the thermoelectric unit 100 may collect heat and convert the collected heat into electrical energy. The electromagnetic unit 102 may convert electrical energy from an electromagnetic field generated by the rotating magnetic disk 108. The triboelectric part 104 generates electrical energy from friction generated along the rotating magnetic disk 108. The piezoelectric part 106 generates electric energy by harvesting vibrations induced from the rotational motion of the rotating magnetic disk 108. The electric energy generation unit according to a conventional or new method may be applied as an example of the present disclosure or may be incorporated into another example. In addition, the hybridized energy generation unit may also be applied to the present disclosure.

The generated electrical energy is stored in one or more energy storage units 110. As an example, one or more energy storage units may extend along one direction and may be disposed inside the case unit 10 to be described later. The stored electrical energy may be transmitted to, for example, a mobile device using one or more energy transmission and charging units 112.

2 is a flowchart of generating electric energy using a portable wearable wireless charging device according to an embodiment of the present disclosure.

Referring to FIG. 2, the thermoelectric unit 102 according to an example may collect heat and convert the collected heat into electrical energy. (S200) In addition, the electromagnetic unit 102 according to an example is a rotating magnetism. Electrical energy may be converted from the electromagnetic field generated by the disk 108. (S202) Meanwhile, the triboelectric unit 104 according to an example is generated by friction generated between the rotating magnetic disk 108 Electric energy is generated from static electricity. (S204) In addition, the piezoelectric unit 106 according to an example generates electric energy by harvesting vibrations induced from the rotational motion of the rotating magnetic disk 108. S206) The above-described steps may be performed independently of each other.

Next, the generated electrical energy is stored in one or more energy storage units 110. (S208) Next, the stored electrical energy is an external device, for example, a mobile device, using one or more energy transmission and charging units 112. (S210) In the present disclosure, charging may be performed using wireless induction charging, but the present disclosure is not limited thereto.

3A is a schematic perspective view of a portable wearable wireless charging device according to an embodiment of the present disclosure. 3B is a schematic side view of a portable wearable wireless charging device according to an embodiment of the present disclosure. 3C is a schematic perspective view of a portable wearable wireless charging device according to an embodiment of the present disclosure.

3A to 3C, the portable wearable wireless charging device 1 according to an example may be provided in a circular or semicircular ring shape that can be worn on a user's finger. As an example, the portable wearable wireless charging device 1 may include a ring-shaped case portion 10 having a circular or semicircular cross section. For example, the case unit 10 (see FIG. 6B) may be made of a smooth metal, and the portable wearable wireless charging device 1 including a metal case may be mounted on a user's finger.

The thermoelectric unit 100 may be disposed along the circumference of the inner portion of the case unit 10 so as to contact the user's fingers in order to collect heat radiated from the user's skin. The rotating magnetic disk 108 is provided in a ring shape and disposed on the inner side of the case part 10, while the energy transmission and charging part 112 is disposed along the circumference of the outer part of the case part 10 for charging the wireless device. I can. The portable wearable wireless charging device 1 according to an example may also include a triboelectric unit 104, a piezoelectric unit 106, and an electromagnetic unit 102.

4 is a flowchart of transmitting and charging electric energy using a portable wearable wireless charging device according to an embodiment of the present disclosure.

3A to 4, the portable wearable wireless charging device 1 according to an example is a rotation starter 109 capable of partially driving or inducing the initial rotation of the rotating magnetic disk 108 using mechanical energy. It may include. The rotation starter 109 according to an example may be an electromagnet driven by the thermoelectric unit 100. As an example, at this time, the thermoelectric unit 100 may convert heat applied from the outside into electric energy for driving the electromagnet. The electromagnet creates an initial thrust for the rotating magnetic disk 108.

The rotation starter 109 according to another example may include a mechanical device in which a spring is wound. The rotation starter 109 according to an example includes a gear mechanism and a moving member connected to the gear mechanism and having a predetermined weight, and the moving member receives mechanical energy from the variable movement of the portable wearable wireless charging device 1. Can be generated. At this time, the mechanical energy generated from the moving member compresses a spring capable of storing mechanical energy. The release button may release the compression of the spring, and may generate an initial movement of the rotating magnetic disk 108 using the released spring.

The rotating magnetic disk 108 according to an example provides rotational movement that can be converted into electrical energy. The rotating magnetic disk 108 according to an example may have a circular shape including a permanent magnet radially attached around a central axis. The bottom surface of the rotating magnetic disk 108 may be exposed to magnetic poles arranged to be alternating to produce an alternating magnetic flux with rotation. Opposing magnetic poles of the alternating magnets may be directed toward either a center direction of the rotating magnetic disk 108 or a direction of an outer edge portion of the rotating magnetic disk 108. For example, all magnets with the N pole exposed toward the center may have the S pole exposed on the outer edge of the rotating magnetic disk 108, and all magnets with the S pole exposed on the bottom surface rotate. The magnetic disk 108 may have an exposed N-pole toward the inner radial direction. The rotation of the rotating magnetic disk 108 is, for example, a driving method using a combination of an electromagnet and a driving permanent magnet or a flywheel. It can be kept stable by design.

As an example, the rotating magnetic disk 108 may be rotated by using an electromagnet driven by the thermoelectric unit 100 or an external magnet in which magnetic poles and repulsive force are applied along the outer edge of the rotating magnetic disk 108. have. As another example, the rotating magnetic disk 402 may be rotated using only an external magnet on which magnetic poles and repulsive forces are applied along the outer edge of the rotating magnetic disk 402.

The portable wearable wireless charging device 1 according to an example includes a triboelectric unit 104 capable of converting static electricity generated by friction generated between the rotating magnetic disk 108 into electrical energy. It may contain more. The triboelectric part 104 may be disposed between the rotating magnetic disk 108 and the electromagnetic part 102. As an example, the upper surface of the triboelectric unit 104 may be disposed to directly contact the rotating magnetic disk 108. In addition, the lower surface of the triboelectric unit 104 may be disposed to be in contact with the electromagnetic unit 102.

The electromagnetic unit 102 according to an example may convert the alternating magnetic flux generated by the rotating magnetic disk 108 into electrical energy using electromagnetic field induction. While the rotating magnetic disk is rotating, magnetic poles disposed along the circumference of the bottom surface of the rotating magnetic disk 108 can generate an alternating magnetic flux for each induction coil.

The portable wearable wireless charging device according to an example includes a piezoelectric unit 106 capable of collecting mechanical energy from vibrations generated by an outer edge portion of the rotating magnetic disk 108 and converting the collected mechanical energy into electrical energy. It may include.

The piezoelectric unit 106 may collect electrical energy using another method. As an example, alternating magnetic poles may be disposed along the outer edge portion of the rotating magnetic disk 108, and the magnetic poles may generate magnetic force that changes in proportion to a change in a separation distance from the piezoelectric portion 106. At this time, the piezoelectric unit 106 may harvest energy vibrating in a frictionless manner by receiving a repulsive force from a variable magnetic force. At this time, the piezoelectric part 106 may be attached to a permanent magnet.

According to another example, a bump or similar protrusion may be disposed along the inner edge of the rotating magnetic disk 108, and the bump or similar protrusion may be formed by the rotating magnetic disk 108 to generate vibration. It may periodically collide with the piezoelectric part 106 disposed to contact the inner edge part of the.

The portable wearable wireless charging device 1 according to an example collects electrical energy output from the thermoelectric unit 100, the triboelectric unit 104, the electromagnet unit 102 and the piezoelectric unit 106, or the thermoelectric unit ( 100), a triboelectric unit 104, an electromagnet unit 102, and a hybrid circuit 110 for synthesizing and outputting electric energy output from the piezoelectric unit 106 into a single electric energy. At this time, the total sum of the single electric energy synthesized by the hybrid circuit 110 is substantially the same as the electric energy output from the thermoelectric unit 100, the triboelectric unit 104, the electromagnet unit 102, and the piezoelectric unit 106. Do. The portable wearable wireless charging device according to an example may include an energy transmission and charging unit 112 capable of transmitting electrical energy synthesized using the hybrid circuit 110 to the mobile device using a wireless charging method.

5 is a flowchart illustrating movement of energy in a portable wearable wireless charging device according to an embodiment of the present disclosure.

Mechanical energy generated by the user according to an embodiment may be collected by, for example, a mechanical energy harvesting unit 500, for example, the rotation starter 109 shown in FIG. 4. Meanwhile, the thermoelectric unit 100 may collect heat generated by a user or an external environment. Next, the collected heat is converted into electrical energy to drive another rotary starter 109, for example an electromagnet 504. The mechanical energy harvesting unit 500 and the electromagnet 504 transfer mechanical energy to initially rotate the rotating magnetic disk 108. At this time, the rotating magnetic disk 108 may provide rotational energy to be converted into electrical energy. As an example, rotation of the rotating magnetic disk 108 may generate mechanical vibration with respect to the piezoelectric part 106. In this case, the piezoelectric part 106 may convert mechanical vibration into electrical energy.

As an example, rotation of the rotating magnetic disk 108 may generate an alternating magnetic flux that is converted into electrical energy by the electromagnetic unit 102 including an induction coil. Further, rotation of the rotating magnetic disk 108 may create friction with the triboelectric part 104. At this time, the generated friction may generate static electricity that can be converted into electrical energy by the triboelectric unit 104.

Electrical energy generated by the thermoelectric unit 100, the piezoelectric unit 106, the electromagnetic unit 102, and the triboelectric unit 104 according to an example may be supplied to the circuit unit 514. The circuit unit 514 may synthesize input electric energy supplied from the thermoelectric unit 100, the piezoelectric unit 106, the electromagnetic unit 102, and the triboelectric unit 104 into synthetic electric energy for charging. The synthetic electrical energy may be transmitted to an external device, for example, a charger 516 capable of charging a mobile device through an inductive charging method.

6A and 6B are perspective views illustrating a portable wearable wireless charging device according to an embodiment of the present disclosure.

The portable wearable wireless charging device 1 according to an example has a ring shape that can be worn on a user's finger. The portable wearable wireless charging device 1 is for charging the mobile device when a power terminal for charging the mobile device M or an external power device does not exist. As an example, heat generated from the user, the external environment, and the mobile device M is collected by the thermoelectric unit 100 included in the portable wearable wireless charging device 1, and the collected heat can be converted into electric energy. have. Thereafter, the converted electric energy may be stored in an energy storage unit included in the portable wearable wireless charging device 1.

As an example, movement of the user's fingers may also generate mechanical energy for the rotating magnetic disk 108 included in the portable wearable wireless charging device 1. Rotation of the rotating magnetic disk 108 may generate vibration, alternating magnetic flux, and friction in each of the piezoelectric unit 100, the electromagnetic unit 102, and the triboelectric unit 104. The piezoelectric unit 100, the electromagnetic unit 102, and the triboelectric unit 104 may generate electric energy that can be stored in the energy storage unit. When the user wants to charge the mobile device, the user needs to place the mobile device M adjacent to the portable wearable wireless charging device 1 as shown in FIGS. 6A and 6B. According to one example, it is sufficient for the user to input an input signal into the wearable wireless charging device 1 to start wireless inductive charging for the mobile device M. 6A and 6B show two possible embodiments of a wearable wireless charging device.

According to an example, the portable wearable wireless charging device may be implemented in the form of a wearable device such as gloves, bracelets, necklaces, foot necklaces, earrings, headgear, glasses, and hair accessories, but the present disclosure is limited thereto. no. In addition, according to an example, the portable wearable wireless charging device may be integrated with accessories such as, for example, a mobile phone case, a laptop sleeve, a laptop case, and a sticker having a magnetic force, but the present disclosure is limited thereto. no.

Embodiments described herein can be independently extended to other concepts, ideas, or systems, or can be combined with concepts, ideas or systems disclosed in any embodiment of this specification. The present invention is not limited to the embodiments of the detailed description, but is understood with reference to the accompanying drawings. Various modifications of the invention may be apparent to those skilled in the art. It is to be understood that the techniques described herein are not intended to be limited to specific embodiments, and include various modifications and/or alternatives to the embodiments herein. Accordingly, the scope of protection of the present invention is defined by the following claims and their equivalents. In addition, in one embodiment, technical features described individually or as part of other configurations may be applied to other embodiments even if there is no mention in the present specification. Even if there is no mention of a combination of technical configurations in the present specification, there is no intention to exclude such combination from the scope of the rights.

Claims (14)

An energy generating unit including a rotating magnetic disk provided with a plurality of permanent magnets alternately arranged around a central axis;
At least one energy storage unit for storing the energy generated by the energy generation unit; And
Includes; at least one energy transmission and charging unit for transmitting the energy stored in the at least one energy storage unit to an external device,
The energy generating unit,
A thermoelectric unit that collects heat transferred from the outside and converts it into electrical energy;
An electromagnetic unit for converting electrical energy from an electromagnetic field generated by the rotating magnetic disk;
A triboelectric unit converting static electricity generated by friction with the rotating magnetic disk into electrical energy; And
Including; a piezoelectric unit for collecting the vibration induced from the rotational movement of the rotating magnetic disk and converting it into electrical energy
Portable wearable wireless charging device. The method of claim 1,
Further comprising a ring-shaped case portion having a circular or semi-circular cross-section that can be worn on the user's finger,
Portable wearable wireless charging device. The method of claim 2,
The thermoelectric part is disposed along the circumference of the inner part of the case part disposed to face the user's skin,
Portable wearable wireless charging device. The method of claim 1,
The vibration induced from the rotational motion of the rotating magnetic disk is generated from a magnetic force generated from a plurality of magnets included in the rotating magnetic disk and a magnet to which the piezoelectric part is attached,
Portable wearable wireless charging device. The method of claim 1,
The vibration induced from the rotational motion of the rotating magnetic disk is generated by a collision between a protrusion provided in the rotating magnetic disk and the piezoelectric part,
Portable wearable wireless charging device. The method of claim 2,
The at least one energy transmission and charging unit is disposed along the circumference of the outer portion of the case portion,
Portable wearable wireless charging device. The method of claim 1,
Further comprising a rotation starter capable of applying a rotational force to the rotating magnetic disk
Portable wearable wireless charging device. The method of claim 1,
One magnetic pole of the magnet provided in the rotating magnetic disk is arranged to face the bottom surface of the rotating magnetic disk, and the other magnetic pole of the magnet is an outer edge of the rotating magnetic disk or the center of the rotating magnetic disk. Arranged to face in any of the directions,
Portable wearable wireless charging device. A method of generating electric energy using a portable wearable wireless charging device according to claim 1, comprising:
Collecting heat transferred from the outside using the thermoelectric unit and converting it into electrical energy;
Converting electrical energy from the electromagnetic field generated by the rotating magnetic disk using the electromagnetic unit:
Converting static electricity generated by friction with the rotating magnetic disk into electrical energy using the triboelectric part;
Collecting vibrations induced from rotational movement of the rotating magnetic disk using the piezoelectric unit and converting them into electrical energy;
Storing the generated electric energy using the at least one energy storage unit' and
Including; transmitting the stored electrical energy using the at least one energy transmission and charging unit
Electric energy generation method using a portable wearable wireless charging device. The method of claim 9,
The thermoelectric unit is disposed to face the user's skin and collects heat applied from the user,
Electric energy generation method using a portable wearable wireless charging device. The method of claim 9,
The vibration induced from the rotational motion of the rotating magnetic disk is generated from a magnetic force generated from a plurality of magnets included in the rotating magnetic disk and a magnet to which the piezoelectric part is attached,
Electric energy generation method using a portable wearable wireless charging device. The method of claim 9,
The vibration induced from the rotational motion of the rotating magnetic disk is generated by a collision between the rotating magnetic disk and the piezoelectric unit,
Electric energy generation method using a portable wearable wireless charging device. The method of claim 9,
Further comprising the step of applying a rotational force to the rotating magnetic disk using a rotation starter,
Electric energy generation method using a portable wearable wireless charging device. The method of claim 9,
One magnetic pole of the magnet provided in the rotating magnetic disk is arranged to face the bottom surface of the rotating magnetic disk, and the other magnetic pole of the magnet is an outer edge of the rotating magnetic disk or the center of the rotating magnetic disk. Arranged to face in any of the directions,
Electric energy generation method using a portable wearable wireless charging device.

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