KR101598888B1 - Device for energy harvesting - Google Patents

Abstract

The present invention relates to an energy collecting device capable of collecting energy by converting vibrations transmitted from the outside in a state of being attached to a surface to be adhered in accordance with the form of an adhered surface.
The energy collecting apparatus according to the present invention comprises a substrate 12, 22, 32 made of a flexible material, attached to an adherend surface and deformed along the deformed adherend surface when the adherend surface is deformed, And a vibrating member 11 (a vibrating member) for vibrating when the substrate 12 (12), 22 (32) is connected to one end, both ends or the periphery of the substrate 12 21) 21 '(31).

Description

Device for energy harvesting

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an energy collecting apparatus for collecting energy by converting a deformation of an element into vibration, and more particularly to an energy collecting apparatus for converting a deformation transmitted from the outside into a vibration To an energy collecting device capable of collecting energy.

Various studies have been actively carried out to collect energy that can not be utilized among the energy existing in the surroundings in a usable form.

As an example of an energy collecting device according to the prior art for collecting a small amount of energy obtained from human body motion, body temperature, etc., there is a mass which freely moves in a channel formed inside the energy collecting device, And the mass is caused to collide with the piezoelectric element according to the vibration applied in the channel direction, thereby causing vibration to be generated. However, according to the energy collecting apparatus as described above, since the irregular human motion is limited to a predetermined number of channels, vibration of the channel direction can not be properly applied to the piezoelectric element.

Another example of prior art energy collecting apparatus uses a piezoelectric element made of a substrate having a shell structure so that a voltage of a current outputted from the piezoelectric element becomes larger when a fast deformation speed and a large deformation of the piezoelectric element are inputted . However, in such an energy collecting apparatus, when there is motion such as bending, it is advantageous in a situation where a peak occurs once for a short time, but there is a problem that the output power is not large when applied to a human body having a relatively low frequency of exercise.

In addition, there is a problem that the curvature of the shell structure gradually decreases due to repeated deformation, resulting in poor durability.

On the other hand, the following prior art document relates to a 'multiple regenerative energy collecting device', and discloses a technology relating to an energy collecting device for converting the renewable energy of the environment such as a solar cell, vibration energy or thermal energy into electric energy.

KR 10-2010-0121031 A

Disclosure of the Invention The present invention has been developed in order to solve the above-mentioned problems, and it is an object of the present invention to convert a deformation according to a motion of a human body into a vibration to generate a motion of a human body corresponding to a low frequency band of several Hz, And to provide an energy collection device that can be collected.

Another object of the present invention is to provide an energy collecting apparatus having a flexible material adapted to a curved surface shape of a surface to be adhered, such as the skin of a human body, so as to be easily attached to the skin of a human body.

According to an aspect of the present invention, there is provided an energy collecting apparatus comprising: a substrate, made of a flexible material, attached to an adherend surface and deformed along the deformed adherend surface when the adherend surface is deformed; And an oscillation member to which one end, both ends, or a periphery are connected to the substrate, and a current is output while being vibrated when the substrate is deformed.

And the vibrating member is composed of a piezoelectric element that outputs a deformation input to the substrate as electric power.

Wherein the vibrating member is fixed to the substrate when the deformation inputted to the substrate is within a set value and the vibrating member is moved away from the substrate when the deformation inputted to the substrate exceeds a set value Further comprising fixing means.

The fixing means is a magnet provided on either one side of the substrate or the oscillating member and a magnetic body provided on the other side of the magnet and attached by the magnetic force of the magnet or another magnet.

Wherein the oscillating member is connected at one end of the oscillating member to the substrate in the form of a cantilever beam, and the securing means is installed at the other end of the oscillating member.

A magnet is provided at the other end of the vibration member, and the magnetic body is installed on the substrate.

Both ends of the oscillating member are connected to the substrate in the form of both ends, and the oscillating member is installed in the middle of the oscillating member.

A magnet is provided on an upper surface of an intermediate portion of the vibration member, and a magnetic body is installed at a position where the magnet is projected from the substrate.

Wherein the vibrating member is formed of a membrane that is spaced apart from the substrate and that is circumferentially connected to the substrate, and the fixing unit includes a magnet provided on the membrane, and a magnetic body disposed on a position where the magnet is projected on the substrate .

The magnet may be installed on a bottom surface of the vibrating member, and the coil may be wound on the substrate so that the magnet reciprocates between the inside and the outside to induce an induced current.

The substrate is provided with a through hole passing through the substrate, and the coil is installed inside the through hole so that one end of the coil is positioned.

And a magnetic substance is provided on a bottom surface of a portion where the through hole is formed in the substrate.

The substrate and the vibration member may be at least one member selected from the group consisting of polyvinyl chloride (PVC), polyethylene terephthalate resin, polyethylene, EVA (ethylene vinyl acetate), polydimethylsiloxane (PDMS) And the like.

According to the energy collecting apparatus of the present invention having the above-described structure, the vibration member is caused to vibrate according to the movement of the human body, and the movement of the human body is converted into the vibration to output the electric power from the vibration member. have.

Also, the energy of deformation can be collected regardless of the speed or frequency of deformation of the human body.

In addition, the vibration member is excellent in durability because it does not undergo excessive deformation because it is not subjected to impact or tensile force even when the movement of the human body is excessive.

Since the substrate is formed of a flexible material, it can be easily attached and used regardless of the shape of the attached portion.

The energy collecting apparatus according to the present invention can collect energy according to the movement of the human body by applying directly to the skin of the human body in the form of a patch or by applying it to the clothes and it is possible to collect energy not only in the human body and clothing, The energy can be collected by bonding.

1 is a perspective view showing an energy collecting apparatus according to a first embodiment of the present invention;
2 is a sectional view showing an energy collecting apparatus according to a first embodiment of the present invention;
FIG. 3 and FIG. 4 are sectional views showing the operation of the energy collecting apparatus according to the first embodiment of the present invention; FIG.
5 is a perspective view showing an energy collecting apparatus according to a second embodiment of the present invention;
6 is a sectional view showing an energy collecting apparatus according to a second embodiment of the present invention;
7 and 8 are sectional views showing the operation of an energy collecting apparatus according to a second embodiment of the present invention;
9 is a partially cutaway perspective view showing an energy collecting apparatus according to a third embodiment of the present invention;
10 is a perspective view showing an energy collecting apparatus according to a fourth embodiment of the present invention;
11 is an enlarged view of the main part of Fig.
12 is a sectional view of Fig. 10; Fig.
13 is a partially enlarged view of an energy collecting apparatus according to a fourth embodiment of the present invention in which a coil is provided in a through hole formed in a substrate and a magnet is disposed inside the coil.
14 is a conceptual diagram showing a state in which a magnet reciprocates inside a coil in an energy collecting apparatus according to a fourth embodiment of the present invention;

Hereinafter, an energy collecting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

The energy collecting apparatus according to the present invention comprises a substrate 12, 22, 32 made of a flexible material and deformed according to deformation of an adherend surface, 21, 21 ', 31, which are connected to each other, and vibrates when a deformation is inputted from the outside to the substrate 12, 22, 32.

 The substrates 12, 22, and 32 are made of a flexible material and attached to the adherend surface. Since the substrates 12, 22 and 32 are made of a flexible material, the energy collecting apparatus according to the present invention can be adhered to the curved surface of the adherend surface. For example, even when the energy collecting apparatus is attached to the skin of a human body, the energy collecting apparatus can be attached regardless of the attachment region.

The vibrating members 11, 21, 21 'and 31 are arranged at one end, both ends or the periphery of the vibrating members 11, 21, 21' Lt; / RTI > The vibrating members 11, 21, 21 ', and 31 are made of piezoelectric elements and vibrates on the substrate 12 (22) (32) as deformation is transmitted or deformation is removed from the outside, And outputs the power due to the deformation as an output value. The vibrating members 11, 21, 21 'and 31 are provided on the substrates 12, 22 and 32 so that the vibrating members 11, 21 and 21 (31) oscillate or the deformation transmitted from the outside is removed, the vibration member (11), (21 '), (31) Energy can be collected regardless of the frequency of the deformation.

For example, when the energy collecting apparatus according to the present invention is attached to a human body in order to collect energy according to the movement of the human body, the human body moves irregularly and the frequency depending on the movement of the human body is about several Hz to ten Hz. The band is low and there is no upper limit and lower limit of the input value. However, the energy collecting apparatus according to the present invention can apply the piezoelectric element to convert deformation into vibration and collect energy.

The substrate 12, 22 and 32 and the vibration members 11, 21, 21 'and 31 may be made of polyvinyl chloride (PVC), polyethylene terephthalate resin, polyethylene, EVA and a material including at least one selected from the group consisting of polyvinyl acetate, acetate, polydimethylsiloxane (PDMS), polyimide, and the like. The substrate 12, 22, 32 and the vibrating members 11, 21, 21 ', 31 are formed in the form of a plastic film, a polymer material or the like by using the above materials.

The fixing means may be arranged such that the vibrating members 11, 21, 21 'and 31 are arranged on the substrate 12 (see FIG. 1) for deformation within the predetermined range of the vibration members 11, 21, 21' 22) 32 so that the oscillating members 11, 21, 21 ', 31 are maintained in the same shape as the substrates 12, 22, 32, 21, 21 ', and 31 are spaced apart from the substrate 12, 22, and 32, respectively. 21 or 31 are brought into contact with the substrate 12, 22 or 32 when a deformation is inputted from the outside or the vibration member 11, 21, 21 ' 11) (21) (21 ') 31 are oscillated.

As a specific example of the fixing means, a magnetic body 14 (24) (24) which can be attached to the magnet (13) (23) (33) by the magnetic force of the magnet 34). The magnets 13, 23 and 33 or the magnetic bodies 14 and 24 and 34 are disposed between the substrates 12 and 22 and the vibrating members 11 and 21 and 21 ' The vibrating members 11, 21 and 21 'and 31 are arranged on the substrate 13 so that the vibrating members 11, 21 and 21' The vibrating members 11, 21 and 21 'and 31 vibrates in a state where the vibrating members 11, 21, 21 and 31 are fixed to the substrate 12 12) 22 (32).

For example, as shown in FIG. 1, a magnet 13 may be installed on one side of the vibration member 11, and the magnetic substance 14 may be installed on the substrate 12. On the contrary, on the other hand, the magnet member 14 may be provided on the vibration member 11, and the magnet 13 may be provided on the substrate 12.

22 and 32 and the vibration members 11, 21, 21 'and 31 are provided with magnets in place of the magnetic bodies 14, 24 and 34, The magnets may be installed in all of them. When the magnets 13, 23 and 33 are provided on the substrate 12, 22 and 32 and the vibration members 11, 21 and 21 'and 31, When an external force larger than the attractive force between the magnets 13, 23 and 33 is inputted from the outside, the substrate 12, 22, 32 and the vibration The vibrating members 11, 21, 21 'and 31 are vibrated while the magnets installed in the members 11, 21, 21' and 31 are separated from each other.

On the other hand, the fixing means may use a Velcro tape or an adhesive. (21 ') and (31') are arranged on the substrate 12 in accordance with the deformation transmitted from the outside and the magnitude of the adhesive force of the Velcro tape or the adhesive even when the Velcro tape or the adhesive is used, And the vibration members 11, 21, 21 ', and 31 are vibrated in a state where one side is spaced apart from the substrate 12, 22,

Although the magnet-magnetic material, the Velcro and the adhesive have been described as the fixing means, the fixing means can prevent the vibrating members 11 and 21 from being fixed to the substrates 12, 22 and 32 by the fixing means until a certain range of deformation, (21 ') and (31) are fixed in a fixed state by fixing the substrate (12) (21') and (31) 22, and 32 so that the vibrating members 11, 21, 21 'and 31 can freely oscillate while being separated from each other.

Hereinafter, each embodiment of the energy collecting apparatus according to the present invention will be described in detail.

1 to 4 show an energy collecting apparatus according to a first embodiment of the present invention.

1 and 2, the energy collecting apparatus according to the first embodiment of the present invention includes a substrate 12 of a flexible material and an oscillating member 11 (not shown) mounted on the substrate 12 in the form of a cantilever beam ).

The substrate 12 is made of a flexible material and can be deformed in the form of the adherend surface so as to be adhered to the adherend surface formed in various curved shapes.

The vibration member (11) is installed in the form of a cantilever beam on the substrate (12). That is, one end of the vibration member 11 is connected to the substrate 12, and the other end of the vibration member 11 is positioned adjacent to the surface of the substrate 12 and is not connected to the substrate 12 Respectively. Therefore, the other end of the oscillating member 11, which is not connected to the substrate 12, can freely oscillate about one end of the substrate 12 connected thereto.

In addition, it may further include fixing means provided on the substrate 12 and the vibration member 11.

The fixing means fixes the other end of the oscillating member 11 to the substrate 12 or is spaced apart from the substrate 12 according to the magnitude of deformation inputted from the outside. The fixing means is composed of the magnet 13 and the magnetic body 14 as described above and the magnet 13 is installed on one side of the vibration member 11 and the magnetic body 14 is formed on the substrate 12, It is preferable that the other end of the vibration member 11 is fixed or spaced apart from the substrate 12 according to the size of the deformation. Particularly, the magnet 13 serves as a verification mass of the vibration member, and when the other end of the vibration member 11 is separated from the substrate 12, the vibration member 11 vibrates at a natural frequency.

On the other hand, the magnet 13 and the magnetic body 14 may be provided on the substrate 12 and the vibration member 11, respectively. Further, two magnets may be provided on the substrate 12 and the vibration member 11, respectively.

3 and 4 illustrate operation states of the energy collecting apparatus according to the first embodiment of the present invention having the above-described configuration according to the magnitude of deformation inputted from the outside.

3 shows a state in which the energy collecting device operates when a deformation inputted from the outside is smaller than a predetermined size, that is, smaller than the attracting force of the magnet 13 and the magnetic body 14. [

 In the case where the deformation is not large, the vibration member 11 is deformed together with the substrate 12. In this case, since the energy collecting device is deformed within a range I-I line in which the adherend surface is adhered in a state of being adhered to the adherend surface, the deformation is transmitted in the direction of the arrow B, That is, one end of the oscillating member 11 is connected to one end of the substrate 12 while the other end is fixed to the substrate 12 by the fixing means.

Fig. 4 shows a state in which the energy collecting apparatus is operated when the deformation inputted from outside is larger than a predetermined size. The magnet 13 and the magnetic body 14 are separated from each other while the energy collecting device is deformed in the direction of the arrow B as compared with the curved surface (refer to the I-I line) (11) is spaced apart from the substrate (12).

As described above, when the other end of the vibration member 11 is separated from the substrate 12, the other end of the vibration member 11 vibrates in the direction of arrow V (see FIG. 4) When the deformation occurs, the output value is output. At this time, since the magnet 13 installed on the vibration member 11 is in a state in which the mass is confirmed, the vibration member 11 vibrates at a natural frequency, Is influenced only by the degree of bending moment at the moment of separation from the substrate 12, that is, the magnitude of deformation input from the outside, and is not affected by the speed or frequency of deformation.

Such an energy collecting device can collect and utilize a small amount of energy generated from the movement of the human body, for example, by attaching to the skin of the human body.

In addition, by adhering the energy collecting device to a place where the adherend surface is deformed, deformation inputted from outside can be collected in the form of energy.

5 to 8 show an energy collecting apparatus according to a second embodiment of the present invention.

5 to 6, the energy collecting apparatus according to the second embodiment of the present invention includes a substrate 22 of a flexible material, an oscillating member (not shown) connected to both ends of the substrate 22 21), and fixing means provided on the substrate (22) and the vibration member (21).

The substrate 22 is made of a flexible material, as in the previous embodiment.

The vibrating member 21 is provided as a piezoelectric element, both ends thereof are connected to the substrate 22, and the vibrating member 21 is formed in the form of both ends. When the deformation is small, the vibration member 21 deforms together with the substrate 22. When the deformation is large, the vibration member 21 vibrates with a natural frequency, thereby deforming the deformation inputted to the outside into a form of vibration to collect energy.

It is preferable that the fixing means is provided with a magnet 23 and a magnetic body 24 so that the magnet 23 is installed on the oscillating member 21 and the magnetic body 24 is provided with the substrate 22 Do. Particularly, in the present embodiment, since the both ends of the vibrating member 21 are in the form of both ends provided on the substrate, the magnets 23 are arranged on the vibrating member 21).

In the energy collecting apparatus according to the second embodiment of the present invention, the magnets 23 and the magnetic bodies 24 are kept apart from each other in an initial state or a state where the deformation is small.

7, when the flexible substrate 22 is deformed (see arrow B), the magnet 23 and the magnetic body 24 are attracted by an attractive force And are attached to each other. When the external force is removed, the substrate 22 is flattened to the original state, and the magnet 23 and the magnetic body 24 are separated, and the vibrating member 21 vibrates. As shown in Fig. 8, the oscillating member 21 oscillates in the direction of arrow V, and outputs an output value due to deformation.

On the other hand, FIG. 9 shows a third embodiment of the present invention in which the second embodiment is modified.

In the third embodiment according to the present invention, a substrate 22 and an oscillating member 21 ', which is provided in the form of a membrane so as to be spaced apart from the substrate 22 and to which the substrate 22 is connected, .

The substrate 22 is formed of a flexible material and adhered to the surface of the object to be adhered in the same manner as in the above two embodiments.

The vibrating member 21 'is a membrane positioned so as to be spaced apart from the substrate 22 so that its periphery is connected to the substrate 22.

A magnet 23 is provided on the upper surface of the vibrating member 21 'and a magnetic body 24 is provided at a position where the magnet 23 is projected. Preferably, the magnet 24 is disposed at the center of the vibrating member 21' A magnet (23) and a magnetic body (24) are provided at the center of the substrate (22).

In the third embodiment of the present invention, as in the second embodiment, when the initial state or the deformation is small, the magnet 23 and the magnetic body 24 are kept apart from each other, When the magnet 23 and the magnetic body 24 adhere to each other and the change is removed, the magnet 23 and the magnetic body 24 are separated from each other, and the vibration member 21 'vibrates to output an output value due to deformation.

10 to 14 show an energy collecting apparatus according to a fourth embodiment of the present invention.

The energy collecting apparatus according to the fourth embodiment of the present invention includes a substrate 32 made of a flexible material and having a through hole 32a formed therein and an oscillating member 31 connected to both ends of the substrate 32 And a magnetic body 34 provided on the bottom surface of the substrate 32. The magnetic body 34 is provided on the substrate 32 and is disposed outside the magnet 32. [ 33) includes a reciprocating coil (35).

In the above-described embodiment, while the vibration members 11 and 21 are vibrated, an output value is output from the vibration member 31 made of a piezoelectric element. However, in the fourth embodiment of the present invention, And an electromagnetic induction phenomenon is used which causes induction power to be output from the coil by the permanent magnet 33 reciprocating between the outside and the inside of the coil 35. [

The substrate 32 is made of a flexible material so that it can be deformed into the same curved surface as the surface to be adhered having various curved surfaces. At this time, a through hole 32a passing through the substrate 32 is formed in the substrate 32. [ The through hole 32a not only provides a coil to be described later but also secures a space in which the permanent magnet 33 vibrates.

Both ends of the oscillating member 31 are connected to the substrate 32 and are formed in the form of both ends. When the deformation is inputted, the oscillating member 31 is oscillated at the maximum amplitude of the center portion. The vibrating member 31 is composed of a piezoelectric element, and outputs an output value by deformation.

The magnet 33 is provided in the form of a permanent magnet and is provided on the bottom surface of the middle portion of the vibration member 31. The magnet 33 is reciprocated in the coil 35 according to the vibration of the oscillating member 31 so that the magnet 33 is preferably installed on the bottom of the middle portion of the oscillating member 31 .

The magnetic substance 34 is provided on the bottom surface of the substrate 32 and is provided on the bottom surface of the substrate 32 in the portion where the through hole 32a is formed. The through hole 32a of the substrate 32 is open in the upward direction but closed in the downward direction by the magnetic body 34. [ When the magnet 33 is deformed, the magnet 33 is separated from the magnetic body 34 when the deformation is removed from the magnetic body 34, ).

The coil 35 is installed inside the through hole 32a formed in the substrate 32, preferably at one end thereof on the inner wall of the through hole 32a, Let it reciprocate. For example, the lower end of the coil 35 is located on the inner wall of the through hole 32a, and the upper end of the coil 35 is located in a space between the substrate 32 and the vibration member 31. As shown in FIG. 14, when the magnet 33 reciprocates in the coil 35, current is output from the coil due to electromagnetic induction. As a result, energy is collected.

Particularly, in the present embodiment (fourth embodiment), the deformation is converted into the vibration even in the vibration member 31, and an output value due to the deformation is outputted from the vibration member 31. In the inside of the coil 35 The energy can be collected in a complex manner in addition to the output value that is output as the magnet 33 reciprocates.

That is, according to the energy collecting apparatus according to the fourth embodiment of the present invention, when a deformation is inputted from the outside, the substrate 32 is deformed so as to maintain the same curved surface as the surface to be adhered, corresponding to deformation of the surface to be adhered .

At this time, as the substrate 32 is deformed, a magnet 33 provided on the vibrating member 31 made of a piezoelectric element adheres to the magnetic body 34, and the external force is removed so that the vibrating member 31 is restored , And an output is generated from the oscillating member (31).

When the oscillating member 31 vibrates, the magnet 33 provided on the oscillating member 31 also reciprocates within the coil 35 while vibrating. As the magnet 33 reciprocates inside the coil 35, the induction power due to the electromagnetic development is also output from the coil 35.

Therefore, in the present embodiment, when the deformation is inputted and removed from the outside, the vibration member 31 vibrates, and the magnet is reciprocated inside the coil 35 and collects the electric power resulting from the deformation, Energy can be collected.

As described above, the energy collecting apparatus according to the present invention can be manufactured in the form of a patch, and directly attached to the skin of the human body to collect energy according to the movement of the human body. In addition, energy can be collected according to the motion of the human body by equipping the garment with the energy collecting device

In addition, if there is an adherend having a site capable of deforming the energy collecting apparatus of the present invention, rather than collecting energy from the movement of the human body, by attaching the energy collecting apparatus to the adherend, So that the energy generated in accordance with the present invention can be collected. For example, the present invention is applied to a door opened in one direction, so that energy can be collected while the energy collecting apparatus is deformed according to opening and closing of the entrance and exit.

11, 21, 21 ', 31: vibrating members 12, 22, 32:
32a: through hole 13, 23, 33: magnet
14, 24, 34: magnetic body 35: coil

Claims (14)

A substrate made of a flexible material and adhered to an adherend surface and deformed along the deformed adherend surface when the adherend surface is deformed;
And an oscillation member having one end, both ends, or a periphery connected to the substrate and outputting a current while vibrating when the substrate is deformed,
Wherein the vibrating member is composed of a piezoelectric element that outputs a deformation input to the substrate as electric power,
Wherein the vibrating member is fixed to the substrate when the deformation inputted to the substrate is within a set value and the vibrating member is moved away from the substrate when the deformation inputted to the substrate exceeds a set value Further comprising fixing means. delete delete The method according to claim 1,
Wherein,
A magnet provided on either the substrate or the oscillating member,
And a magnetic body provided on the other side thereof and attached by the magnetic force of the magnet or another magnet. 5. The method of claim 4,
Wherein one end of the oscillating member is connected to the substrate in the form of a cantilever beam,
And the fixing means is installed at the other end of the vibration member. 6. The method of claim 5,
A magnet is provided at the other end of the vibration member,
And the magnetic substance is installed on the substrate. 5. The method of claim 4,
Wherein the vibrating member has both ends of the vibrating member connected to the substrate in the form of both end beams,
And the fixing means is installed in the middle of the vibration member. 8. The method of claim 7,
A magnet is provided on an upper surface of an intermediate portion of the vibration member,
Wherein a magnetic body is disposed at a position where the magnet is projected from the substrate. 5. The method of claim 4,
Wherein the oscillating member is spaced apart from the substrate and is formed of a membrane having a periphery connected to the substrate,
Wherein the fixing means is a magnetic body provided at a position where the magnet is projected on the substrate and a magnet provided on the membrane. delete delete delete The method according to claim 1,
Wherein:
And a material comprising at least one selected from the group consisting of polyvinyl chloride (PVC), polyethylene terephthalate resin, polyethylene, ethylene vinyl acetate (EVA), polydimethylsiloxane (PDMS) Characterized by an energy collecting device. delete

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