KR20170053263A - Energy harvesting device and wearable device including the same - Google Patents

Energy harvesting device and wearable device including the same Download PDF

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Publication number
KR20170053263A
KR20170053263A KR1020150155535A KR20150155535A KR20170053263A KR 20170053263 A KR20170053263 A KR 20170053263A KR 1020150155535 A KR1020150155535 A KR 1020150155535A KR 20150155535 A KR20150155535 A KR 20150155535A KR 20170053263 A KR20170053263 A KR 20170053263A
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KR
South Korea
Prior art keywords
magnet
moving tube
magnet moving
energy harvesting
wearable device
Prior art date
Application number
KR1020150155535A
Other languages
Korean (ko)
Other versions
KR101788932B1 (en
Inventor
성태현
황원섭
정현준
강우중
홍성광
양찬호
안정환
송예원
정세영
우상범
Original Assignee
한양대학교 산학협력단
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Priority to KR1020150155535A priority Critical patent/KR101788932B1/en
Publication of KR20170053263A publication Critical patent/KR20170053263A/en
Application granted granted Critical
Publication of KR101788932B1 publication Critical patent/KR101788932B1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

An energy harvesting apparatus using electromagnetic induction and a wearable device including the same are disclosed. The disclosed energy harvesting apparatus includes a magnet moving tube in the shape of a closed curve; A coil wound around the outside of the magnet moving tube; And a magnet moving inside the magnet moving tube.

Description

[0001] The present invention relates to an energy harvesting apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy harvesting device and a wearable device including the same, and more particularly, to an energy harvesting device using electromagnetic induction and a wearable device including the same.

When the coil and the magnet move relative to each other, a magnetic field is formed by the movement of the magnet, and a current flows through the coil. This phenomenon is referred to as electromagnetic induction. Electromagnetic induction is being applied to a variety of applications ranging from electronic products such as transformers and wireless power transmission to educational textbooks. A related prior art document is Korean Patent Publication No. 2012-0108874.

Particularly, researches for applying an electromagnetic induction method to the field of energy harvesting, which converts solar energy, wind or vibration, or mechanical energy generated from human motion into electric energy, which are present in the surrounding environment, are actively being studied.

The present invention provides an energy harvesting apparatus that can produce electric energy using electromagnetic induction and can be easily worn by a user, and a wearable device including the same.

According to an aspect of the present invention, there is provided a magnet moving tube having a closed curve shape; A coil wound around the outside of the magnet moving tube; And a magnet moving inside the magnet moving tube.

According to another aspect of the present invention, there is provided a battery comprising: a battery; A magnet moving tube in the form of a closed curve; A coil wound around the outside of the magnet moving tube; A magnet moving inside the magnet moving tube; And a magnet fixing portion for fixing the magnet in a predetermined environment.

According to the present invention, electric energy can be generated using an electromagnetic induction method.

Further, according to the present invention, since the energy harvesting device is provided in a form that can be easily worn on the user's body part, it can be employed in the wearable device to generate electric energy.

1 is a view for explaining an energy harvesting apparatus according to an embodiment of the present invention.
2 is a view for explaining an energy harvesting apparatus according to another embodiment of the present invention.
3 is a view for explaining a wearable device according to an embodiment of the present invention.
4 is a view for explaining the magnet fixing portion.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining an energy harvesting apparatus according to an embodiment of the present invention.

As shown in FIG. 1, an energy harvesting apparatus according to the present invention is an apparatus for generating electric energy using an electromagnetic induction method, and includes a magnet moving tube 110, a coil 120, and a magnet 130.

The magnet moving tube 110 is a tube having a closed curve shape, and may be circular or elliptical in one embodiment. The magnet moving tube 110 can be made of an elastic material so as to be bent by an external force.

The work 120 is wound on the outside of the magnet moving tube 110, and the number of winding times can be variously adjusted according to the embodiment. The coil 120 may be wound on the entire area of the magnet moving tube 110 or partially wound on a predetermined area of the magnet moving tube 110. When the coil 120 is partially wound on the magnet moving tube 110, it is preferable that the coil 120 is wound on a region where more energy can be generated in consideration of the movement pattern of the magnet 130. [

The magnet 130 is located inside the magnet moving tube 110 and moves inside the magnet moving tube 110. The magnet 130 may also be curved so that the magnet 130 can move more easily inside the magnet moving tube 110 when the magnet moving tube 110 is circular, It may be the same as the curvature of the magnet moving tube 110.

Since the energy harvesting apparatus according to the present invention is in the form of a closed curve such as a circle or an ellipse, it can be easily worn on the user's arm, ankle, neck, and the like, The electric energy can be generated by electromagnetic induction.

Further, since the energy harvesting apparatus according to the present invention can be easily worn on the user's body part, it can be employed in a wearable device to generate electric energy.

In addition, since the energy harvesting apparatus according to the present invention has a closed curve shape, the movement of the magnet 130 can be more freely moved as compared with a linear magnet moving tube having a constant length and a closed end, and thus more electric energy is generated .

Meanwhile, although not shown in the drawing, the energy harvesting apparatus according to the present invention may further include a rectifier for rectifying the generated electric energy and a battery for storing electric energy. Further, a GPS device, a wireless communication module, and an interface device using electric energy stored according to the embodiment may be further included in the energy harvesting device.

The GPS device generates position information of the energy harvesting device according to the present invention, and the position information can be transmitted to the outside through the wireless communication module.

2 is a view for explaining an energy harvesting apparatus according to another embodiment of the present invention.

Unlike the energy harvesting apparatus described in FIG. 1, the energy harvesting apparatus of FIG. 2 further includes a guide line 210 in the form of a closed curve.

The guide line 210 is included inside the magnet moving tube 110 and provides a path for moving the magnet 130. That is, the magnet 130 may include a through hole through which the guide line 210 passes, and the magnet 130 may be coupled with the guide line 210 to move along the guide line 210.

In order to reduce friction between the magnet 130 and the guide line 210, the diameter of the through hole of the magnet 130 is preferably larger than the diameter of the end surface of the guide line 210, and the guide line 210 is formed of a non- .

FIG. 3 is a sectional view of a wearable device for explaining a wearable device according to an embodiment of the present invention, and FIG. 4 is a view for explaining a magnet fixing portion.

In FIGS. 3 and 4, a circular wearable device including the energy harvesting device of FIG. 1 is described as an embodiment, but the energy harvesting device of FIG. 2 may be employed in a wearable device. Such a wearable device may be worn on the user's arm, ankle, neck or the like.

3 and 4, a wearable device according to the present invention includes a battery 310, a magnet moving tube 320, a coil (not shown), a magnet 330, and a magnet fixing portion 340. Although not shown in FIG. 3, the coil is wound on the outside of the magnet moving tube 320.

The magnet fixing portion 340 fixes the magnet in a predetermined environment. The predetermined environment may be a state in which the battery charge amount is equal to or greater than a threshold value or the wearable device is in use. The wearable device can be operated without energy harvesting in a state where the battery charge amount is sufficient, and noise or vibration that may occur as the magnet 330 moves can be inconvenient to the user. Therefore, the magnet fixing portion 340 fixes the magnet so that the magnet 330 can not move inside the magnet moving tube 320 in this environment.

When the magnet fixing portion 340 is inactivated, the magnet 330 can move through the magnet moving tube 320 to pass through the coil, and electric energy can be generated. The generated electric energy is stored in the battery 310.

The wearable device according to the present invention may further include a control unit, which disables the magnet fixing unit 340 when energy harvesting is required. In one embodiment, the control unit may deactivate the magnet fixing unit 340 according to a user's energy harvesting request. Alternatively, the controller may sense the state of charge of the battery 310 and deactivate the magnet fixing unit 340 when the charged amount of the battery 310 is equal to or less than the threshold value.

On the other hand, as described above, the control unit can activate the magnet fixing unit 340 when the battery charging amount is sufficient and the energy harvesting is unnecessary or at the request of the user.

4, the magnet fixing portion 340 includes at least one protruding member 341 protruding into the inside of the magnet moving tube 320, , 342, 343). The protruding members 341, 342 and 343 protrude into the interior of the magnet moving tube 320 when the magnet fixing portion 340 is activated and the protruding members 341, 342 and 343 protrude when the magnet fixing portion 340 is inactivated. Does not protrude into the inside of the magnet moving tube (320).

At this time, the magnet moving tube 320 may have a through hole so that the protruding members 341, 342 and 343 protrude into the magnet moving tube 320, and the magnet fixing portion 340 and the magnet moving tube 320 Holes may be provided in an area where the coil is not wound.

The first and second protruding members 341 and 342 block the moving path of the magnet 330 and the third protruding member 343 applies pressure in the direction of the magnet 330 to fix the magnet. The third projecting member 343 may be an elastic body. According to the embodiment, the magnet fixing portion 340 may include the first and second protruding members 341 and 342 or may include the third protruding member 343.

The protruding members 341, 342 and 343 protrude into the inside of the magnet moving tube 320 under the control of the control unit or may protrude into the inside of the magnet moving tube 320 when the user presses a button protruding outside the wearable device have.

The wearable device according to the present invention may further include a rectifier for rectifying the generated electric energy, a GPS device using stored electric energy, a wireless communication module, and an interface device.

The GPS device generates positional information of the wearable device according to the present invention, and the positional information can be transmitted to the outside via the wireless communication module.

As described above, the present invention has been described with reference to particular embodiments, such as specific constituent elements, and limited embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (9)

Closed curve shaped magnet moving tube;
A coil wound around the outside of the magnet moving tube; And
The magnet moving inside the magnet moving tube
And an energy harvesting device.
The method according to claim 1,
The coil
The magnet moving tube is wound on a predetermined area of the magnet moving tube
Energy harvesting device.
The method according to claim 1,
The magnet moving tube is ring-
The curvature of the magnet
Equal to the curvature of the magnet moving tube
Energy harvesting device.
The method according to claim 1,
The energy harvesting device
And a guide line in the form of a closed curve included in the inside of the magnet moving tube,
The magnet
And a through-hole through which the guide line passes
Energy harvesting device.
battery;
A magnet moving tube in the form of a closed curve;
A coil wound around the outside of the magnet moving tube;
A magnet moving inside the magnet moving tube; And
A magnet fixing portion for fixing the magnet in a predetermined environment,
Lt; / RTI >
6. The method of claim 5,
According to a user's request for energy harvesting, a control unit for deactivating the magnet fixing unit
And a wearable device.
6. The method of claim 5,
And a control unit for deactivating the magnet fixing unit when the charged amount of the battery is equal to or less than a threshold value,
And a wearable device.
6. The method of claim 5,
The magnet fixing portion
A protrusion member protruding into the inside of the magnet moving tube;
Lt; RTI ID = 0.0 >
6. The method of claim 5,
The magnet
When the magnet fixing part is inactivated, the magnet moving part moves inside the magnet moving tube
Wearable device.
KR1020150155535A 2015-11-06 2015-11-06 Energy harvesting device and wearable device including the same KR101788932B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150155535A KR101788932B1 (en) 2015-11-06 2015-11-06 Energy harvesting device and wearable device including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150155535A KR101788932B1 (en) 2015-11-06 2015-11-06 Energy harvesting device and wearable device including the same

Publications (2)

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KR20170053263A true KR20170053263A (en) 2017-05-16
KR101788932B1 KR101788932B1 (en) 2017-11-15

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107425586A (en) * 2017-06-30 2017-12-01 联想(北京)有限公司 A kind of electronic equipment and power supply method
KR102075000B1 (en) * 2018-10-25 2020-02-10 황준호 Wearable Automatic Charger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006121889A (en) 2004-09-27 2006-05-11 Yasuhisa Tanaka Device for converting energy of permanent magnet into electrical energy
JP2006217789A (en) 2005-01-09 2006-08-17 Yasuhisa Tanaka Permanent magnet electric generator
JP2013146172A (en) * 2011-12-15 2013-07-25 Asahi Kasei Electronics Co Ltd Gradient type power generating device, pseudo bait needle, and float

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107425586A (en) * 2017-06-30 2017-12-01 联想(北京)有限公司 A kind of electronic equipment and power supply method
KR102075000B1 (en) * 2018-10-25 2020-02-10 황준호 Wearable Automatic Charger
WO2020085593A1 (en) * 2018-10-25 2020-04-30 황준호 Wearable automatic charging device

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Publication number Publication date
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