KR102243861B1 - Energy harvesting apparatus and switch using magnetic flux change - Google Patents

Abstract

Disclosed are an energy harvesting device and a switch using a change in the direction of a magnetic flux flowing through a magnetized ferromagnetic material. The energy harvesting apparatus using the disclosed magnetic flux change includes: a core portion having one end formed with first and second contact surfaces and the other end formed with the third and fourth contact surfaces spaced apart by a predetermined interval, and made of a ferromagnetic material; A coil wound on the core part; And contacting the second and third contact surfaces by rotation in a clockwise direction, contacting the first and fourth contact surfaces by rotation in a counterclockwise direction, and magnetizing the one end to different polarities according to the rotation direction. It includes a magnetization part.

Description

Energy harvesting device and switch using magnetic flux change {ENERGY HARVESTING APPARATUS AND SWITCH USING MAGNETIC FLUX CHANGE}

The present invention relates to an energy harvesting device and switch using electromagnetic induction, and more particularly, to an energy harvesting device and switch using magnetic flux change.

Recently, various energy production methods have been studied in accordance with the lack of energy resources. In particular, research on a system for recovering energy discarded in daily life under the concept of energy harvesting has been actively conducted.

Energy harvesting technology refers to a technology that collects energy discarded from daily life such as vibration, light, heat, and electromagnetic waves and converts it into usable electrical energy, and active research is being conducted in a wide variety of fields.

Related prior documents include Korean Patent Application Publication Nos. 2015-0075124 and 2018-0003961.

The present invention is to provide an energy harvesting device capable of harvesting energy by using a change in the direction of magnetic flux flowing through a ferromagnetic material.

In addition, the present invention is to provide a switch that uses a current generated due to a change in a magnetic flux direction flowing through a ferromagnetic material.

According to an embodiment of the present invention for achieving the above object, one end on which the first and second contact surfaces are formed and the other end on which the third and fourth contact surfaces are formed are spaced apart by a predetermined distance, and a core portion made of a ferromagnetic material; A coil wound on the core part; And the second and third contact surfaces are contacted by a clockwise rotation, and the first and fourth contact surfaces are contacted by a counterclockwise rotation, and the one end is magnetized with different polarities according to the rotation direction. There is provided an energy harvesting device using a magnetic flux change including a magnetizing part to make it.

In addition, according to another embodiment of the present invention for achieving the above object, one end on which the first and second contact surfaces are formed and the other end on which the third and fourth contact surfaces are formed are spaced apart by a predetermined distance, and a core portion made of a ferromagnetic material; A coil wound on the core part; The second and third contact surfaces are contacted by a clockwise rotation, and the first and fourth contact surfaces are contacted by a counterclockwise rotation, and the one end is magnetized with different polarities according to the rotation direction. Magnetization; And there is provided a switch using a magnetic flux change including a direction control unit for adjusting the rotation direction of the magnetization unit.

According to the present invention, energy can be harvested by magnetizing the ferromagnetic material so that the direction of the magnetic flux flowing through the ferromagnetic material is changed.

In addition, according to the present invention, it is possible to control the switching operation by using the current generated as the direction of the magnetic flux flowing through the ferromagnetic material is changed.

1 is a view for explaining an energy harvesting apparatus using a magnetic flux change according to an embodiment of the present invention.
2 is a diagram illustrating a state in which a magnetization unit of an energy harvesting device according to an embodiment of the present invention rotates in a clockwise direction.
3 is a diagram illustrating a state in which a magnetization unit of an energy harvesting device according to an embodiment of the present invention rotates in a counterclockwise direction.
4 to 6 are views for explaining a magnetization part of an energy harvesting device according to an embodiment of the present invention.
7 is a diagram illustrating a magnetization part of an energy harvesting device according to another embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

The present invention relates to an energy harvesting apparatus using electromagnetic induction, and in particular, generates electric energy by changing the direction of magnetic flux flowing through a ferromagnetic body in which a coil is wound.

The change in the magnetic flux flowing through the ferromagnetic material occurs when one end and the other end of the ferromagnetic material are magnetized with different polarities by an external force, and when the magnetic flux changes, a current flows through the coil by the electromagnetic induction principle.

The electric energy generated in this way may be used for the control operation of the switch.

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

1 is a view for explaining an energy harvesting apparatus using a magnetic flux change according to an embodiment of the present invention. And Figure 2 shows a state in which the magnetization unit of the energy harvesting device according to an embodiment of the present invention is rotated in a clockwise direction, and Fig. 3 is a magnetization unit of the energy harvesting device according to an embodiment of the present invention is rotated in a counterclockwise direction. It shows the rotated state.

1 to 3, an energy harvesting apparatus using a magnetic flux change according to an embodiment of the present invention includes a core unit 110, a coil and a magnetization unit 140.

The core portion 110 is a ferromagnetic material having a shape in which one end 120 and the other end 130 are spaced apart by a predetermined interval, and is a horseshoe shape as shown in FIG. 1 as an embodiment, or "c" according to an embodiment. It may have a shape, a “U” shape, etc., in which one end and the other end are spaced apart by a predetermined interval.

In addition, first and second contact surfaces 121 and 122 are formed on one end 120 of the core portion 110, and third and fourth contact surfaces 133 and 134 are formed at the other end. One end 120 and the other end 130 of the core portion may have a symmetrical structure.

A coil (not shown) is wound around the core portion 110 between one end and the other end of the core portion 110.

The magnetization unit 140 contacts the second and third contact surfaces 122 and 133 by rotation in a clockwise direction, and contacts the first and fourth contact surfaces 121 and 134 by rotation in a counterclockwise direction. In addition, in order to magnetize one end 120 of the core portion to have different polarities according to the rotation direction, and to magnetize the core portion 110, a magnet or a magnetized ferromagnetic material may be included.

For example, one end 120 of the core part, as shown in FIG. 2, may be magnetized to a first polarity when the magnetization part 140 rotates clockwise, and as shown in FIG. 3, the magnetization part When 140 rotates counterclockwise, it may be magnetized to the second polarity. And the other end 130 of the core part may be magnetized to a second polarity when the magnetization unit 140 rotates in a clockwise direction, and may be magnetized to a first polarity when the magnetization unit 140 rotates in a counterclockwise direction. I can. Here, the first polarity may be an N-pole, and the second polarity may be an S-pole.

Therefore, when the magnetization unit 140 rotates in the clockwise direction, the direction of the magnetic flux flowing through the core unit 110 made of a ferromagnetic material and the core unit 110 when the magnetization unit 140 rotates counterclockwise. The directions of the flowing magnetic fluxes are opposite to each other, and current may be induced in the coil wound around the core part 110 by the change in the magnetic flux direction.

The magnetization unit 140 may rotate clockwise or counterclockwise about a rotation shaft 149 positioned between one end and the other ends 120 and 130 of the core unit, and the first and second contact surfaces 121 and 122 And, each of the third and fourth contact surfaces 133 and 134 has a preset angle, such as a “V” or “U” shape, so that it can contact the magnetization unit 140 by rotation of the magnetization unit 140 It can be formed at one end and the other end by bending as many times as possible.

As described above, the core portion 110 may have various shapes in which one end and the other ends 120 and 130 are spaced apart from each other, and the separation distance between the one end and the other ends 120 and 130 may also be determined in various ways. To increase the contact area between the first and second contact surfaces 121 and 122 and the third and fourth contact surfaces 133 in order to increase the contact area between the fourth contact surfaces 121, 122, 133 and 134 and the magnetization unit 140. The angle between, 134, may be determined according to the separation distance between one end and the other end (120, 130). As the separation distance between one end and the other end 120 and 130 increases, the angle between the first and second contact surfaces 121 and 122 and the angle between the third and fourth contact surfaces 133 and 134 should be smaller. The fourth contact surfaces 121, 122, 133, and 134 and the magnetization unit 140 are parallel to each other, so that the contact area may increase.

As described above, according to an embodiment of the present invention, energy may be harvested by electromagnetic induction by magnetizing the ferromagnetic material so that the direction of the magnetic flux flowing through the ferromagnetic material is changed.

4 to 6 are views for explaining a magnetization part of an energy harvesting device according to an embodiment of the present invention, FIG. 4 is a view for explaining a frame of the magnetization part, and FIG. 5 is a ferromagnetic material inserted into the frame, It is a diagram for explaining a magnet. And Figure 6 is a diagram showing a state in which a ferromagnetic material and a magnet are inserted into the frame.

4 to 6, the magnetization unit 140 according to an embodiment of the present invention includes a frame 145, first to fourth ferromagnetic bodies 441 to 444, and a magnet 445.

On one side of the bar-shaped frame 145 and the other side facing one side, the first to fourth ferromagnetic bodies 441 to 444 are penetrated so that they can contact the first to fourth contact surfaces 121, 122, 133, and 134. A hole is formed, and a rotation shaft 149 is coupled to the side of the frame 145. First and second through holes 141 and 142 are formed on one side of the frame 145, and although not shown in the drawing, the first and second through holes 141 and 142 and the other side of the frame 145 are also In a symmetrical structure, third and fourth through holes are formed. The frame 145 may be made of a non-magnetic material.

The first to fourth ferromagnetic bodies 441 to 444 and the magnet 445 are inserted into the frame 145 and may be disposed as shown in FIG. 5 in the inserted state. The first ferromagnetic material 441 is a first through hole 141, the second ferromagnetic material 442 is a second through hole 142, the third ferromagnetic material 443 is a third through hole, and the fourth ferromagnetic material 444 is It is connected to the 4 through hole. The first to fourth ferromagnetic bodies 441 to 444 may have a shape having a protrusion formed on one surface thereof so as to be coupled to the through hole and to contact the first to fourth contact surfaces 121, 122, 133, and 134.

Then, the magnet 445 is coupled with the first to fourth ferromagnetic bodies 441 to 444 to magnetize the first to fourth ferromagnetic bodies 441 to 444. Specifically, the magnet 445 magnetizes the contact surfaces of the first and third ferromagnetic bodies 441 and 443 in contact with the first and third contact surfaces 121 and 133, that is, the protrusions to a first polarity, and The contact surfaces of the second and fourth ferromagnetic bodies 442 and 444 in contact with the contact surfaces 122 and 134, that is, the protrusions, are magnetized to a second polarity.

As shown in FIG. 5, when the first to fourth ferromagnetic bodies 441 to 444 and the magnet 445 are disposed, the protrusions of the first and third ferromagnetic bodies 441 and 443 are magnetized to the N pole, and the second and second ferromagnetic materials are The protrusions of the four ferromagnetic bodies 442 and 44 may be magnetized to the S pole.

A nonmagnetic material may be disposed between the first ferromagnetic material 441 and the second ferromagnetic material 442 and between the third ferromagnetic material 443 and the fourth ferromagnetic material 444.

When the magnetization part 140 rotates in the clockwise direction, the second ferromagnetic material 442 contacts the second contact surface 122 of the core part through the second through hole 142, and the third ferromagnetic material 443 It contacts the third contact surface 133 of the core part through the three through hole. Since the protrusion of the second ferromagnetic body 442 is magnetized to the second polarity, and the protrusion of the third ferromagnetic material 443 is magnetized to the first polarity, the second contact surface 122 is magnetized to the first polarity. The third contact surface 133 may be magnetized to a second polarity.

And when the magnetization part 140 rotates counterclockwise, the first ferromagnetic material 441 contacts the first contact surface 121 of the core part through the first through hole 141, and the fourth ferromagnetic material 444 Is in contact with the fourth contact surface 143 of the core portion through the fourth through hole. Since the protrusion of the first ferromagnetic body 441 is magnetized to the first polarity, and the protrusion of the fourth ferromagnetic body 444 is magnetized to the second polarity, the first contact surface 121 is magnetized to the second polarity. , The fourth contact surface 134 is magnetized to the first polarity.

If the first polarity is the N-pole and the second polarity is the S-pole, when the magnetization unit 140 rotates in a clockwise direction and rotates counterclockwise, the magnetic flux flowing through the core unit 110 is at one end 120 In the flow from the other end 130 to the other end 130 to the end 120, the current may be induced in the coil due to the change in the magnetic flux direction.

Meanwhile, according to another embodiment of the present invention, one through hole may be formed on one side and the other side of the frame, respectively. In this case, the first and second ferromagnetic bodies 441 and 442 contact the first and second contact surfaces 121 and 122 through one through hole formed on one surface, and the third and fourth ferromagnetic bodies 443 and 444 May contact the third and fourth contact surfaces 133 and 134 through one formed on the other surface.

7 is a diagram illustrating a magnetization part of an energy harvesting device according to another embodiment of the present invention.

In order to magnetize the core portion, a magnet not coupled with a ferromagnetic material may be used. The magnetization unit of the energy harvesting device according to another embodiment of the present invention may include a frame as illustrated in FIG. 4 and first and second magnets 771 and 772 as illustrated in FIG. 7, and the first magnet 771 is It is inserted into the frame 145 and coupled to the first and third through holes, and the second magnet 772 is inserted into the frame 145 and coupled to the second and fourth through holes. To be coupled to the through hole, the first and second magnets 771 and 772 may have a shape with protrusions formed on both sides thereof, and the first and second magnets 771 and 772 may have a first polarity (N pole) These may be arranged so that they face the same direction and the second polarities (S-pole) face each other in the same direction. In addition, a nonmagnetic material may be disposed between the first and second magnets 771 and 772.

The first magnet 771 contacts the first contact surface 121 through the first through hole 141 to magnetize the first contact surface 121 to a second polarity, and the third contact surface ( In contact with 133, the third contact surface 133 is magnetized to a first polarity.

In addition, the second magnet 772 contacts the second contact surface 122 through the second through hole 142 to magnetize the second contact surface 122 to a second polarity, and the fourth contact surface through the fourth through hole In contact with 134, the fourth contact surface 134 is magnetized to a first polarity.

When a frame in which one through hole is formed on one side and the other side is used, the first magnet 771 contacts the first contact surface through the through hole formed on one side, thereby magnetizing the first contact surface to a second polarity, and The third contact surface is magnetized to the first polarity by contacting the third contact surface through the through hole formed in In addition, the second magnet 772 contacts the second contact surface through a through hole formed on one surface, magnetizes the second contact surface to a second polarity, and contacts the fourth contact surface through the through hole formed on the other surface to make the fourth contact surface. Magnetizes to the first polarity.

Meanwhile, as described above, electrical energy generated by the energy harvesting device according to an embodiment of the present invention may be used for a control operation of a switch, and such an energy harvesting device may be used as a switch.

A switch using a magnetic flux change according to an embodiment of the present invention includes the aforementioned energy harvesting device and a direction control unit.

More specifically, in the switch according to an embodiment of the present invention, one end on which the first and second contact surfaces are formed and the other end on which the third and fourth contact surfaces are formed are spaced apart by a predetermined interval, and a core part made of a ferromagnetic material and a core part are wound. The coil is in contact with the second and third contact surfaces of the core part by rotation in a clockwise direction, and contacts the first and fourth contact surfaces of the core part by rotation in a counterclockwise direction, and one end of the core part is connected to each other according to the rotation direction. It includes a magnetization unit that is magnetized with different polarities and a direction control unit that adjusts a rotation direction of the magnetization unit.

The direction controller may alternately rotate the magnetization unit in a clockwise direction and a counterclockwise direction, and may alternately rotate the magnetization unit in a clockwise direction and a counterclockwise direction according to a user's request. At this time, the direction control unit applies an external force to one end of the rod-shaped magnetization unit so that the magnetization unit can rotate about the rotation axis.

When the direction control unit applies an external force to one end of the magnetization unit in the left direction, the magnetization unit rotates clockwise as shown in FIG. 2, and when the direction control unit applies an external force to one end of the magnetization unit in the right direction, the magnetization unit is Can rotate clockwise.

As an example, when the magnetization unit rotates clockwise to generate current, a control operation corresponding to ON may be performed, and when the magnetization unit rotates counterclockwise to generate current, a control operation corresponding to OFF is performed. Can be. That is, the magnetization unit may rotate like a pendulum, and a direction control unit may be implemented with various mechanical structures for pendulum movement of the magnetization unit.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions. Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later fall within the scope of the spirit of the present invention. .

Claims (10)

A core portion having one end formed with the first and second contact surfaces and the other end formed with the third and fourth contact surfaces spaced apart by a predetermined interval and made of a ferromagnetic material;
A coil wound on the core part; And
Magnetization that contacts the second and third contact surfaces by rotation in a clockwise direction, contacts the first and fourth contact surfaces by rotation in a counterclockwise direction, and magnetizes the one end to different polarities according to the rotation direction Includes wealth,
The one end and the other end are in the shape of a symmetrical structure,
The first and second contact surfaces are contact surfaces formed by bending by a preset angle.
Energy harvesting device using magnetic flux change.
delete The method of claim 1,
The angle between the first and second contact surfaces, and the angle between the third and fourth contact surfaces is
Determined according to the separation distance between the one end and the other end
Energy harvesting device using magnetic flux change.
The method of claim 1,
The magnetization part
Rotating in the clockwise direction or the counterclockwise direction about a rotation axis positioned between the one end and the other end,
Energy harvesting device using magnetic flux change.
The method of claim 1,
The magnetization part
A frame including a first through hole formed on one surface and a second through hole formed on the other surface;
A first ferromagnetic material in contact with the first contact surface through the first through hole;
A second ferromagnetic material in contact with the second contact surface through the first through hole;
A third ferromagnetic material in contact with the third contact surface through the second through hole;
A fourth ferromagnetic material in contact with the fourth contact surface through the second through hole; And
Magnetize the contact surfaces of the first and third ferromagnetic materials in contact with the first and third contact surfaces to the first polarity, and magnetize the contact surfaces of the second and fourth ferromagnetic materials in contact with the second and fourth contact surfaces to the second polarity Letting magnet
Energy harvesting device using a magnetic flux change comprising a.
The method of claim 1,
The magnetization part
A frame including first and second through holes formed on one surface and third and fourth through holes formed on the other surface;
A first ferromagnetic material in contact with the first contact surface through the first through hole;
A second ferromagnetic material in contact with the second contact surface through the second through hole;
A third ferromagnetic material in contact with the third contact surface through the third through hole;
A fourth ferromagnetic material in contact with the fourth contact surface through the fourth through hole; And
Magnetize the contact surfaces of the first and third ferromagnetic materials in contact with the first and third contact surfaces to the first polarity, and magnetize the contact surfaces of the second and fourth ferromagnetic materials in contact with the second and fourth contact surfaces to the second polarity Letting magnet
Energy harvesting device using a magnetic flux change comprising a.
The method of claim 1,
The magnetization part
A frame including a first through hole formed on one surface and a second through hole formed on the other surface;
By contacting the first contact surface through the first through hole, the first contact surface is magnetized with a first polarity, and the third contact surface is brought into contact with the third contact surface through the second through hole. A first magnet to magnetize; And
The second contact surface is brought into contact with the second contact surface through the first through hole to magnetize the second contact surface to the first polarity, and the fourth contact surface is brought into contact with the fourth contact surface through the second through hole. Second magnet to be magnetized with polarity
Energy harvesting device using a magnetic flux change comprising a.
The method of claim 1,
The magnetization part
A frame including first and second through holes formed on one surface and third and fourth through holes formed on the other surface;
By contacting the first contact surface through the first through hole, the first contact surface is magnetized to have a first polarity, and the third contact surface is brought into contact with the third contact surface through the third through hole to make the third contact surface into a second polarity. A first magnet to magnetize; And
The second contact surface is brought into contact with the second contact surface through the second through hole to magnetize the second contact surface to the first polarity, and the fourth contact surface is brought into contact with the fourth contact surface through the fourth through hole. Second magnet to be magnetized with polarity
Energy harvesting device using magnetic flux change.
A core portion having one end formed with the first and second contact surfaces and the other end formed with the third and fourth contact surfaces spaced apart by a predetermined distance, and made of a ferromagnetic material;
A coil wound on the core part;
Magnetization that contacts the second and third contact surfaces by rotation in a clockwise direction, contacts the first and fourth contact surfaces by rotation in a counterclockwise direction, and magnetizes the one end to different polarities according to the rotation direction part; And
It includes a direction control unit for adjusting the rotation direction of the magnetization unit,
The one end and the other end are in the shape of a symmetrical structure,
The first and second contact surfaces are contact surfaces formed by bending a predetermined angle.
A switch that uses magnetic flux change.
The method of claim 9,
The magnetization part
It is a rod shape that rotates in the clockwise or counterclockwise direction around a rotation axis positioned between one end and the other end of the core part,
The direction control unit
By applying an external force to one end of the magnetization unit, the magnetization unit rotates alternately in the clockwise direction and the counterclockwise direction
Switch using magnetic flux change.

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