KR101549445B1 - energy harvester - Google Patents

Abstract

The present invention relates to an environment-friendly power generation device which uses wasted energy such as mechanical rotation and vibration and does not discharge waste or pollutant in producing power. It improves the durability of a system and also performs continuous power generation, and improves space efficiency. Thereby, the present invention provides an energy harvester of a new structure for improving power generation efficiency. For this, the present invention includes a driving cam; and a tribo device which is charged by the driving of the driving cam. And the tribo device includes a first charging body, a second charging body which is separated from the first charging body and has different polarity when it touches the first charging body by the force of the driving cam, and an elastic member which separates the first charging body from the second charging body.

Description

Energy harvester}

The present invention relates to an energy harvester, and more particularly, to a structure using a triboelectric element and / or a piezoelectric element, which improves the durability of the system for energy harvesting and enables continuous power generation, And a new structure of the energy harvester which can improve the power generation efficiency through the above.

In recent years, the use of electricity has been increasing due to the exhaustion of fossil fuels. As a result, the energy shortage is becoming more serious due to the lack of electricity generation.

Energy harvesting technology, which has been developed to efficiently utilize energy resources that are scarce, is attracting attention due to recent energy problems.

In particular, energy harvesting technology has been rapidly growing day by day, which is incomparable to the past technology level due to intensive interest and intensive research and development in the academic and industrial fields.

Energy Harvesting is a system that harvests energy that is harvested from the environment and converts it into usable electrical energy, unlike traditional hydropower, thermal power, wind power, and tidal power generation technology, which means 'harvesting' .

Energy harvesting technology not only greatly improves the energy efficiency of existing electronic devices, but also ultimately enables the electronic devices to be driven independently by using the energy of the surroundings without supplying additional energy. It is expected that this industry will be a big part of the energy industry with the development of smart grid and ubiquitous.

Energy Harvesting is currently being promoted by policy makers in developed countries.

Piezoelectric harvesting and triboelectric harvesting technologies are among the most technologically advanced areas of energy harvesting technology.

First, piezoelectricity refers to the ability to obtain power by ordinary operations such as pressure or vibration. In the meantime, piezoelectric harvesting technology has been recognized as being economically unfavorable due to its low output.

However, recently, ultra-low-power semiconductor technologies have been developed rapidly, and it is expected to make a significant contribution to the field of energy harvesting.

As shown in the analysis that the shoe mounted piezoelectric generator outputs 330μW per unit volume, the piezoelectric harvesting technology has already proved that it is capable of power output of micro watts (μW). It is expected to improve with milliwatt (mW) piezoelectric energy harvesting technology in a few years.

The electrostatic harvesting technique can also produce electric power by converting mechanical energy such as wind, sound, heartbeat, and shaft rotation into electrical energy. An easy example is the principle that static electricity is generated by light body contact in winter. The two large bodies of different properties can be frictioned with each other, leading to the transfer of electric charge, and current can be made to flow through a simple wire connection.

The higher the contact frequency, the higher the contact strength, the higher the output power. In recent years, as a result of the research that the maximum output is increased from 24% efficiency to 1.5 W (19 mW / cm 2), technical development is actively carried out in the electrostatic hubbing field.

In particular, the two types of energy harvesting systems described above are not exposed to any other wastes or other polluting factors such as carbon dioxide or electron noise during the development process, and are being illuminated as environmentally preferable alternative energy technologies.

However, current energy harvesting systems still require much improvement in terms of durability, continuity of generation, space utilization, and power generation efficiency.

Korean Patent Publication No. 10-2011-0039864 (April 20, 2011)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an environmentally friendly power generation device which does not discharge any other waste or environment polluting elements during the power generation process, and is applicable to a rotary shaft of an automobile or a bicycle, System and the like, and to provide an energy harvester of a new structure that can utilize the energy that is thrown away by mechanical rotation and vibration in the environmentally friendly production of electric energy.

It is still another object of the present invention to provide an energy harvester having a new structure capable of not only improving the durability of the energy harvesting system but also generating continuity of power generation, .

According to an aspect of the present invention, there is provided an image forming apparatus including: a driving cam for performing axial rotation or vibration; And a tribological element charged by the driving of the drive cam.

In the above-described configuration, the tribological element may include: a first main body provided on the structure; A second main body which is provided so as to be spaced apart from the entire first main body and which is brought into contact with the entire first main body by the force applied by the driving cam and charged with each other upon contact with each other; And an elastic member spaced apart from each other.

The energy harvester according to the present invention provides the following effects.

First, the energy harvester of the present invention is eco-friendly since it does not discharge any other waste or environment-polluting elements in the process of harvesting electric energy through power generation. That is, the energy harvester of the present invention can perform the function of an environmentally friendly power generation device.

Next, the energy harvester of the present invention can eco-recycle the energy discarded through mechanical rotation and vibration.

That is, the energy harvester of the present invention can be applied to a rotary shaft of a tire such as an automobile or a bicycle, or can be applied to a system having a rotary shaft such as a pinwheel, thereby efficiently utilizing the energy harvester in the production of electric energy.

Next, the energy harvester of the present invention not only improves durability but also enables continuity of power generation, and can provide a space-efficient power generation system.

That is, the energy harvester of the present invention is a structure that increases the space efficiency while minimizing damages of the entire large-scale system and enables continuous power generation. The energy harvester has a durability, space utilization efficiency, Energy harvesting system.

1 (a) and 1 (b) are diagrams showing a basic configuration of an energy harvester according to a first embodiment of the present invention,
Fig. 1 (a) is a state before the tribological element is charged by the drive cam,
1 (B) shows a state in which the triboelectric element is charged by the drive cam
FIGS. 2A to 2E are diagrams showing a modified example of the energy harvester according to the first embodiment of the present invention
Figs. 3A to 3E are diagrams showing still another modification of the energy harvester according to the first embodiment of the present invention
FIG. 4 is a schematic view of an energy harvester according to a second embodiment of the present invention.
5A and 5B are diagrams showing a modified example of the energy harvester according to the second embodiment of the present invention
FIG. 6 is a schematic diagram of an energy harvester according to a third embodiment of the present invention
7A to 7E are diagrams showing a modified example of the energy harvester according to the third embodiment of the present invention
FIG. 8 is a schematic view of an energy harvester according to a fourth embodiment of the present invention
FIG. 9 is a schematic view of an energy harvester according to a fifth embodiment of the present invention
Fig. 10 is a diagram showing the configuration of the energy harvester according to the sixth embodiment of the present invention
11 is a configuration diagram of an energy harvester showing a modified example of the energy harvester according to the sixth embodiment of the present invention
12 is a configuration diagram of an energy harvester showing another modification of the energy harvester according to the sixth embodiment of the present invention
13 and 14 are perspective views showing a three-dimensional implementation of the energy harvester according to the present invention
15 is a view showing another embodiment of the drive cam applied to the energy harvester of the present invention
16 (a) and 16 (b) are diagrams showing a structure in which electrode terminals of a metal material are further provided on the whole of the energy harvester applied to the present invention

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

[Example 1]

1 (A) and 1 (B) show a basic configuration of an energy harvester according to a first embodiment of the present invention. Fig. 1 (A) shows a state before a tribological element is charged by a drive cam And FIG. 1 (B) is a state in which the triboelectric element is charged by the drive cam.

FIGS. 2A to 2E are structural views showing a modified example of the energy harvester according to the first embodiment of the present invention, and FIGS. 3A to 3E show another modified example of the energy harvester according to the first embodiment of the present invention Fig.

Referring first to FIG. 1, an energy harvester 1 according to a first embodiment of the present invention includes a drive cam 300 for performing axial rotation or oscillation motion; And a tribo-electricity element (also referred to as a "tri-band element") that is charged by driving the drive cam 300.

The tribological element includes a first main body 110 and a second main body 110 which are spaced apart from the first main body 110 and approach the first main body 110 by a force applied by the driving cam 300, And an elastic member 200 that separates the first main body 110 and the second main body 120 from each other. The first main body 110 is fixed to the structure 400.

The elastic member 200 is installed between the first main body 110 and the second main body 120. At this time, the elastic member 200 is installed to elastically support both ends of the second main body 120.

The driving cam 300 is provided to apply a pressing force to the second main body 120 so that the second main body 120 vibrates continuously to come into contact with the first main body 110. For example, And can be provided on an axle that transmits the output of the engine to the wheels of an automobile or can be provided on a rotary shaft of a windmill or a wheelbarrow that uses natural force such as wind or hydraulic force and can rotate, So that a pressing force can be transmitted to the second base 120 as a whole.

The operation of the energy harvester 1 according to the basic configuration of the first embodiment of the present invention constructed as described above is as follows.

1 (A), the triboelectric element is not charged when the drive cam 300 is not in contact with the second large bobbin 120 as a whole.

In this state, when the upper surface of the second main body 120 constituting the tribo element is pressed by the rotation of the driving cam 300, the second main body 120 compresses the elastic member 200 while descending Thereby approaching the first main body 110.

That is, the second main unit 120 is pressed by the driving cam 300 to compress the elastic member 200, so that the second main unit 120 comes close to the first main unit 110 fixed to the structure 400.

Referring to Fig. 1 (B), when the second main body 120, which is pressed down by the rotating driving cam 300 and moves downward, is pressed by the driving cam 300 as much as possible, The first main body 110 and the second main body 120 are brought into contact with each other.

That is, when the second main body 120 is lowered while pressing the elastic member 200 by the urging force of the driving cam 300 and comes into contact with the first main body 110, the triboelectric element is charged, .

Accordingly, the tribological element can collect electric charge (i.e., triboelectricity) generated by a compressive force or a frictional force resulting from contact between the second main body 120 and the first main body 110, thereby producing electric energy .

In the process of producing such electric energy, the energy harvester 1 of the present invention does not discharge any waste or environment-polluting elements.

In other words, the energy harvester 1 of the present invention can utilize discarded energy such as mechanical rotation such as an axle and other vibrations in an environmentally friendly manner for electric production.

Hereinafter, with reference to FIG. 2A to FIG. 2E and FIGS. 3A to 3E, the operation and effect of the configuration of the modified example of the energy harvester according to the first embodiment of the present invention will be described.

Prior to the explanation, the energy harvester 1 having the configuration according to Figs. 2A to 3E has the same basic operation in terms of producing electric energy by charging as it is in contact with each other as shown in Fig. 1, In order to avoid duplication of explanations, only specific effects according to the characteristic features inherent in each modification will be discussed.

2A, the first main body 110 is supported by a structure 400, and the first main body 110 is supported between the first main body 110 and the structure 400 supporting the first main body 110, A shock absorbing elastic member 220 for preventing an impact transmitted to the first main body 110 and a stopping of the second main body 120 when the first main body 110 and the second main body 120 are in contact with each other, .

2A, when the second main body 120 is brought into contact with the first main body 110 by the pressing action of the driving cam 300, the first main body 100 Since the shock absorbing elastic member 220 is absorbed instead of the shock absorbing member 220 by the deformation process, the shock transmitted to the first main body 110 is transmitted to the first main body 110 The impact is mitigated and minimized.

Referring to FIG. 2B, guide means 500 is provided for guiding the motion of the second main assembly 120 to an accurate linear motion when the driving cam 300 is pressed. That is, when the second main body 120 is moved in the direction of contact with the first main body 110, a guide (not shown) for guiding the equilibrium movement of the second main body 120 is provided on the second main body 120, Means 500 are provided.

The guide unit 500 includes a connecting rod 510 attached to the upper surface of the second main body 120 and a guide member 520a having a guide hole 520a for guiding the connecting rod 510 to linearly move 520).

2B, the second main body 120, which is lowered by the pressing action of the driving cam 300, includes a connecting rod 510 installed to move along the guide hole 520a of the guide member 520, The entire second base 120 can be inclined with respect to the entire first base 110 of the lower base without inclining. Are simultaneously brought into contact with each other.

On the other hand, referring to FIG. 2C, the charged surface of the second main body 120 is divided into segments. This is to obtain an effect of improving the current or voltage by connecting the segmented second main bodies 120 in series or in parallel.

That is, the first main body 110 is brought into contact with the segmented segments 110a of the second main body 120 when the second main body 120 and the first main body 110 are in contact with each other.

Thus, according to the configuration disclosed in FIG. 2C, it is possible to obtain the same effect as when the second large bobbin 120 as a whole touches the entire first bobbin 110 at the same moment.

2D, the tribological element includes a first large-diameter portion 120, which corresponds to one end of the first large-sized girder 110, Between the other end of the second main assembly 120 which is closer to the drive cam 300 and the other end of the first main assembly 110 corresponding to the other end of the second main assembly 120, When the drive cam 300 is compressed, the second main body 120 and the first main body 110 are brought into contact with each other to charge each other, and when the compression force is released, The driving cam 300 contacts the other end of the second main body 120 at the time of driving so that the first main body 120 and the first main body 110 are elastically deformed To compress the member (200).

2d, even if the first main body 110 and the second main body 120 are not parallel to each other, when the driving cam 300 is driven, the second main body 120 The elastic member 200 is pivoted about the hinge and is rotated to contact the first base 110 to be charged.

When the driving cam 300 continues to rotate and is out of contact with the other end of the second main assembly 120, the second main assembly 120 is rotated by the restoring action of the elastic member 200, And the other end of the second main body 120 is moved away from the other end of the first main body 110 again.

 Referring to FIG. 2E, the tribove element includes a first large base portion 120 and a second large base portion 120. The first large base portion 120 has one end near the drive cam 300 of the second large- Wherein the first main body 120 and the first main body 110 are hinged to one end of the first main body 110 and the second main body 120 in a state in which the driving cam 300 is not in contact with the first main body 120 and the hinge portion of the first main body 110, And the other end of the first main body 110 forms a predetermined angle with respect to the first main body 120. The driving cam 300 is in contact with one end of the second main body 120 at the time of driving, The entire second bobbin 120 is rotated about the hinge portion while pressing the torsion springs 240 to contact the first bobbin 110 and charge them with each other.

2E, even if the first main body 110 and the second main body 120 are not provided so as to be parallel to each other in the up-and-down direction like the structure described above (that is, the structure of FIG. 2D) The second main body 120 rotates while compressing the torsion spring 240 installed on the hinge portion and contacts the first main body 110 to be charged.

Instead, according to this configuration, the positions (left and right positions) of the first main body 110 and the second main body 120 are mutually exchanged with those of the above-described structure (the structure of FIG. 2D) The torsion spring 240 mounted on the hinge portion is compressed by the interference with the driving cam 300 rotating one end of the second main body 120 and the second main body 120 is moved to the first main body 110 .

When the driving cam 300 continuously rotates and comes out of contact with one end of the second main assembly 120, the second main assembly 120 is rotated about the hinge by the restoring action of the elastic member 200 And the other end of the second main body 120 is moved away from the other end of the first main body 110 again.

3A and 3B, the first main body 110 and the second main body 120 are formed in an arcuate shape having a predetermined curvature so as to increase the surface area.

At this time, the first main body 110 and the second main body 120 may have a shape in which a large upper surface is convex upward (see FIG. 3A), and a large upper surface is convex downward 3b).

According to the configuration disclosed in Figs. 3A and 3B, as the upper and lower portions of the body, i.e., the second body 120 and the first body 110 form an arcuate shape, the surface area between the both sides of the body increases, The contact area between the whole of the main body is increased, so that the charging amount can be increased and the power generation efficiency can be increased.

3C and FIG. 3D, the first main body 110 and the second main body 120 are formed in an arcuate shape having a predetermined curvature so as to increase the surface area, Even if the first whole body 110 and the second main body 120 are not provided so as to be parallel to each other in the vertical direction, the second main body 120, when the drive cam 300 is driven, compresses the elastic member 200 about the hinge So as to contact the first main body 110. [0053]

3C and FIG. 3D). On the other hand, the entire main body 110 and the second main body 120 may have a convex shape in the leftward direction (Not shown).

The action of the energy harvester 1 having the structure disclosed in Figs. 3C and 3D is basically the same as the action of the energy harvester having the structure disclosed in Figs. 2D and 2E described above, and thus description thereof will be omitted.

3C and 3D, as the second main body 120 and the first main body 110 form an arcuate shape, the surface area between the both side bodies increases, and thus the contact area between the both side bodies becomes larger So that the charge amount can be increased and the power generation efficiency can be increased.

Referring to FIG. 3E, unevenness is formed on the entire surface of the first main body 110 and the second main body 120 to increase the surface area. The shape of the concavities and convexities may be rounded, that is, in the shape of '∩' or '∪', as illustrated in FIG. 3E, but is not limited thereto.

According to such a configuration disclosed in FIG. 3E, as the concave and convex portions are formed on the surfaces of the upper and lower portions, that is, the surfaces of the second main body 120 and the first main body 110 facing each other, As a result, the contact area between both sides becomes larger, so that the charge amount can be increased and the power generation efficiency can be increased.

It should be noted that the irregularities disclosed in FIG. 3E can be applied to increase the contact area between the large bodies in the structures shown in FIGS. 2A, 2B, 2D, 2E and 3A to 3D.

[Example 2]

FIG. 4 is a configuration diagram of an energy harvester according to a second embodiment of the present invention, and FIGS. 5A and 5B are structural diagrams showing a modified example of the energy harvester according to the second embodiment of the present invention.

Referring to FIG. 4, the energy harvester 1 according to the second embodiment of the present invention also includes a drive cam 300 for performing axial rotation or oscillation motion; And a tribological element which is charged by the driving of the driving cam 300.

Here, the tribological element according to the present embodiment includes: a first main body 110 fixed to the structure 400; A second main body 120 spaced from the first main body 110 and charged with electricity when the first main body 110 is brought into contact with the first main body 110 due to a force exerted by the driving cam 300, The elastic member 200 separating the first main body 110 and the second main body 120 from each other and the second main body 120 contacting the first main body 110 are separated from the elastic member 200, And a third main body 130 installed to be in contact with the second main body 120 and to be charged with electricity when restored to the original state by the restoring force of the second main body 120.

In other words, the tribological element according to the present embodiment can increase the amount of charge due to contact between the entire bodies even when restoring the elastic member 200 through the additional installation of the third large- .

The operation of the energy harvester 1 according to the second embodiment of the present invention constructed as described above is as follows.

4 (a), when the driving cam 300 is not in contact with the second large bobbin 120, the second large bobbin 120 and the first large bobbin 110, which constitute the triboelectric element, Is not charged.

In this state, when the upper surface of the second main body 120 constituting the tribo element is pressed by the rotation of the driving cam 300, the second main body 120 compresses the elastic member 200 while descending Thereby approaching the first main body 110.

That is, the second main unit 120 is pressed by the driving cam 300 to compress the elastic member 200, so that the second main unit 120 comes close to the first main unit 110 fixed to the structure 400.

Referring to FIG. 4 (b), the second main body 120, which is pushed down by the rotating driving cam 300, is pressed down by the driving cam 300, So that the first main body 110 and the second main body 120 are charged with each other.

That is, when the second main body 120 is lowered while pressing the elastic member 200 by the urging force of the driving cam 300 and comes into contact with the first main body 110, the triboelectric element is charged, State.

Accordingly, the tribological element can collect electric charge (i.e., triboelectricity) generated by a compressive force or a frictional force resulting from contact between the second main body 120 and the first main body 110, thereby producing electric energy .

On the other hand, in a state in which the second main body 120 and the first main body 110 are in contact with each other and charged with each other by the pressing force of the drive cam 300 as shown in FIG. 4 (B) When the driving cam 300 is moved to a position where the driving cam 300 can no longer press the second main assembly 120 by the continuous rotation of the cam 300, The entire body 120 is raised. On the upper side of the second main body 120, a third main body 130 for contact with the second main body 120 rising is located.

4 (a), the second main body 120, which is raised by the restoring force of the elastic member 200, comes into contact with the third main body 130, and this time, Electricity is produced between the entire body 120 and the third large body 130, thereby enabling the production of electric energy.

The energy harvester 1 according to this embodiment also does not discharge any waste or environment polluting elements during the production of such electric energy.

That is, the energy harvester 1 of the present embodiment can utilize the abandoned energy such as the mechanical rotation such as the axle and other vibrations in an environmentally friendly manner for electric production.

Hereinafter, a configuration of a modified example of the energy harvester 1 according to the second embodiment of the present invention will be described with reference to FIGS. 5A and 5B.

Since the energy harvester 1 having the configuration according to Figs. 5A and 5B has the same basic operation as the above-described embodiments and modifications in terms of electric energy production by charging in contact with each other, In order to avoid duplication of description, only the characteristic features inherent in each modification will be discussed.

The structure of the modified example shown in FIG. 5A is basically the same as that of FIG. 3C except that the third main body 130 to be brought into contact with the second main body 120 in the absence of the interference of the drive cam 300 is added It is characterized by one.

That is, according to the configuration disclosed in FIG. 5A, in the second large-sized mass body 120 which is in contact with the first massive body 110 while compressing the elastic member 200 as the drive cam 300 is pressed, The third main body 130 is installed to contact the second main body 120 when the first main body 120 is restored to its restored position by the restoring force of the elastic member 200, It is.

Accordingly, as the driving cam 300 rotates and presses the second main assembly 120 in a state in which the second main assembly 120 and the third main assembly 130 are in contact with each other as shown in FIG. 5A, , The second main body 120 is brought into contact with the first main body 110 and charged with each other as shown in (B) of FIG. 5A.

Then, when the interference (i.e., pressing force) of the drive cam 300 with respect to the second main body 120 is eliminated, the second main body 120 again returns to the state shown in FIG. 5A (a) The second main body 120 and the third main body 130 are in contact with each other and charged with each other.

5B is a perspective view of the third main assembly 100 according to another modified example of the present embodiment, which basically follows the structure of FIG. 2E. In the state where there is no interference of the drive cam 300, (130).

5A is a state in which there is no interference between the driving cam 300 and the second main assembly 120 and the second main assembly 120 and the third main assembly 130 are in contact with each other, (B) is a state in which interference (i.e., pressing force) of the driving cam 300 with respect to the second main body 120 exists, and the contact between the second main body 120 and the first main body 110 .

5B, as the driving cam 300 rotates to press the second main assembly 120, the second main assembly 120 is moved in the direction of arrow B in FIG. 5B When the interference (i.e., pressing force) of the driving cam 300 with respect to the entire second main body 120 is eliminated, the second main body 120 again contacts the first main body 110, The second main body 120 and the third main body 130 are brought into contact with each other and charged with each other.

As described above, the energy harvester 1 according to the present embodiment and its modified example can prevent the elastic member 200 from being compressed during the compression of the elastic member 200 through the installation of the third large- The amount of charge can be increased by contact.

[Example 3]

FIG. 6 is a configuration diagram of an energy harvester according to a third embodiment of the present invention, and FIGS. 7A to 7E are structural diagrams showing a modified example of the energy harvester according to the third embodiment of the present invention. 6 to 7E, it is assumed that the structure for fixing the first large-sized body 110 (see the structure shown in FIG. 1) is omitted for simplification of the drawings.

6, the energy harvester 1 according to the third embodiment of the present invention is a triboelectric element charged by the drive of the drive cam 300 as in the above-described embodiments, A plurality of the driving cams 300 are arranged around the driving cam 300 along the rotation direction of the driving cam 300.

According to the energy harvest of the present embodiment configured as described above, the four generations of the large-sized bumps are brought into contact with each other during one rotation of the drive cam 300, so that the power generation efficiency is improved as compared with the above-described embodiment.

7A to 7E illustrate a modified example of the energy harvester according to the third embodiment of the present invention. FIG. 7A shows a case where eight tribo elements are formed around the driving cam 300 , And the triboelectric elements formed around it follow the structure shown in FIG. 3A, but the present invention is not limited thereto. That is, the tribological elements of the structure disclosed in Figs. 1, 2A to 2E, and 3B to 3E can be arranged around the drive cam 300 alternatively or in combination.

For example, Figs. 7B to 7C illustrate the case where tribo elements of another structure are disposed around the driving cam 300. [

That is, according to Fig. 7B, it is shown that the tribological element of the structure shown in Fig. 3C can be arranged around the driving cam 300. Fig. And, according to Fig. 7C, it is shown that the tribological element of the structure shown in Fig. 2E can be arranged around the driving cam 300. Fig.

7D is a diagram showing an arrangement interval of the tribo elements disposed around the driving cam 300. In this case, as soon as the contact of one large overall set is completed upon one rotation of the driving cam 300, the arrangement interval between the entire sets is minimized so that the action of the drive cam 300 for the next full set contact is performed without an interval.

7D illustrates a state in which the rotating drive cam 300 compresses the torsion spring 240 by pressing one end of the second large whole 120 of any of the large overall sets, The driving cam 300 continuously rotating in this state is in contact with the first main body 110 which is in contact with the first main body 110, The first main body 120 of the next full set is contacted with one end of the second main body 120 and starts to pressurize.

7E, the arrangement interval of the tribo elements disposed around the driving cam 300 is made more compact and the contact is made between all the sets of the tribo elements so that the number of the tribo elements can be reduced.

That is, as soon as one large full set of contacts is completed during one rotation of the driving cam 300, the driving cam 300 performs an action for contact of the next large full set without an interval, The second main body 120, which is in contact with the first main body 110 and is restored to its original position due to the interference with the driving cam 300, is completely removed from the first main body 110, As shown in Fig.

7E, when the drive cam 300 is rotated one turn, the second large-diameter portion (the second large-diameter portion) which is rotated about the hinge by the contact with the drive cam 300 among several full- 120, the whole of the second main body shown in green in the drawing) is in contact with the first main body 110 which is a pair.

In this state, the second large-sized whole 120 of the next large-sized whole set immediately after moving out of the second large-sized unit 120 (the second small-sized unit shown in green in the drawing) of the rotating driving cam 300, ; The second main body in red in the drawing).

Accordingly, referring to (B) of FIG. 7 (E), the second main assembly 120, The second main body 100 shown in red in the drawing) comes into contact with the first main body 110 which is paired with the first main body 110. At this time, The entire second main body 120 (the second main body shown in green in the drawing) is brought into contact with the other side of the first main body 110 of the neighboring large main body.

7E, the second major portion 120 (the second major portion in green in FIG. 7), which has contacted the other first major portion 110 in the state shown in FIG. 7E, Comes into contact with the other side of the first large body 110 of the large full set mated with the entire second body 120 (the second small body shown in green in the figure).

In other words, according to the present embodiment, when the pairs of the large sets are in contact with each other, the entire second group adjacent to the first sets comes into contact with the entire first set of the large sets.

Therefore, according to the structure of FIG. 7E, the first large-sized whole 110 of each large-sized set is divided into the third large-sized whole in the second embodiment described above with respect to the second large- 130, thereby reducing the number of units, increasing the space efficiency of the same space, and further improving power generation efficiency.

[Example 4]

8 is a configuration diagram of an energy harvester according to a fourth embodiment of the present invention. In FIG. 8, it is assumed that the structure for fixing the first main body 110 (see the structure in FIG. 3A) is omitted.

Referring to FIG. 8, the energy harvester 1 according to the fourth embodiment of the present invention basically follows the structure of the energy harvester of each of the above-described embodiments, but differs in the structure of the drive cam 300.

That is, the driving cam 300 according to the present embodiment is formed to have a plurality of contact portions 320 protruding radially outward from the rotation center 310.

The energy harvester 1 of this embodiment configured as described above can increase power generation efficiency without arranging a large number of triboelectric elements around the drive cam 300. [

That is, when the driving cam 300 is rotated one time, the pressing force is applied from the driving cam 300 to each of the entire sets by the number of the contact portions 320 protruding in the radial direction at the rotation center 310 , So that large-scale mutual contact is established in each of the large-sized and large-sized sets, thereby improving space utilization efficiency and power generation efficiency.

In the present embodiment, the number of the contact portions 320 of the drive cam 300 can be changed, and the tribological elements disposed around the drive cam 300 can be used as a tribological element according to another embodiment of the present invention. Of course it is possible to substitute.

[Example 5]

Fig. 9 is a configuration diagram of an energy harvester according to a fifth embodiment of the present invention, which is basically the same as that of the first embodiment, and differs in the installation form of the elastic member 200. Fig.

That is, in this embodiment, the elastic member 200 is installed between the second main body 120 and the structure 400 supporting the first main body 110. At this time, the elastic member 200 is installed to elastically support the both ends of the second base 120.

The working principle of the energy harvester 1 according to the present embodiment is basically the same as that of the energy harvester of the first embodiment, and there is a difference in the supporting form of the elastic member 200.

Therefore, the operation and effect of the energy harvester according to the present embodiment will be omitted here to avoid duplication of description.

[Example 6]

10 is a configuration diagram of an energy harvester according to a sixth embodiment of the present invention. This embodiment also basically follows the structure of the first embodiment described above, except that the piezoelectric element 700 is provided on the second large- There is a difference.

That is, according to the present embodiment, in the tribological element of the structure in which the second main body 120 moves up and down so as to contact the first main body 110 by the action of the drive cam 300, And the piezoelectric element 700 is provided on the opposite side of the face of the large-sized whole body 120 facing the first large-sized body 110.

As is widely known, a piezoelectric element is a device in which a voltage is generated when a mechanical stress is applied, and a mechanical strain is caused when a voltage is applied thereto, which is also called a piezo electric element.

The action and effect of the energy harvester 1 of the present embodiment having the above-described structure are as follows.

The energy harvester 1 of the present embodiment is configured such that the piezoelectric element 700 provided on the second main body 120 by the pressure applied from the rotating driving cam 300 produces electric energy, The second main body 120 installed on the lower portion of the element 700 contacts the first main body 110 to generate electrical energy, so that space efficiency and power generation efficiency for installing the energy harvester can be improved.

That is, the energy harvester 1 according to the present embodiment is a hybrid type energy harvester in which a tribo element and a piezoelectric element 700 are combined, and two power generation elements are fused into one space in a substantially same space, It will be possible to demonstrate.

FIG. 11 is a structural view showing a modified example of the energy harvester according to the sixth embodiment of the present invention, basically according to the structure of the fifth embodiment described above, except that the piezoelectric element 700 Is further provided.

That is, in the present embodiment, the piezoelectric element 700 is added to the upper part of the second main body 120 according to the sixth embodiment, and the elastic member 200 supporting the second main body 120, Is the same as the fifth embodiment.

The energy harvester 1 according to the present modification is also a hybrid type in which a triboelectric element and a piezoelectric element are combined, and two power generating elements are fused together in almost the same space, so that a higher performance can be exhibited.

12 is a structural view showing yet another modification of the energy harvester according to the sixth embodiment of the present invention. A buffer elastic member 220 is interposed between the piezoelectric element 700 and the second large- And the piezoelectric element 700 and the second main body 120 are spaced apart from each other.

This is to reduce the shock transmitted to the second main body 120 by separating the piezoelectric element 700 and the second main body 120 from the elastic member 220 for cushioning.

The pressure applied to the piezoelectric element 700 from the drive cam 300 at one time is directly applied to the second piezoelectric element 700. In other words, since the piezoelectric element 700 and the second entire body 120 are separated by the buffering elastic member 220, The second elastic member 220 is transmitted to the second elastic member 220 in a state where the elastic member 220 is not transmitted to the elastic member 120 but is buffered, And comes into contact with the large-sized whole 110.

The energy harvester 1 according to the present modification is also a hybrid type in which a triboelectric element and a piezoelectric element are combined, and two power generating elements are fused together in almost the same space, so that a higher performance can be exhibited.

[Three-Dimensional Implementation Example]

13 and 14 are perspective views showing a three-dimensional implementation of the energy harvester according to the present invention.

First, referring to FIG. 13, the structure according to the third embodiment of the present invention shown in FIG. 6 is implemented in three dimensions.

The rotation center 311 of the driving cam 300 receives the power for rotating the driving cam 300 from the driving source and the first main shaft 110 A plurality of large overall sets including a first large main body 110, a second large main body 120 and an elastic member 200 are disposed on the outer side of the first main body 110, A cylindrical housing 600 is provided.

The energy harvester 1 shown in Fig. 14 is different from the energy harvester 1 shown in Fig. 13 in that the components other than the rotating shaft 311, i.e., the large-sized whole set, the cylindrical housing 600, As shown in FIG. Of course, the elastic members 200 corresponding to the number of sets are provided on each of the sliced sets.

That is, in the energy harvest of this modification, the driving cam 300 is connected to the same rotating shaft 311, and the cylindrical housing 600 shown in FIG. 13, the driving cam 300, the first large- And the second main body 120 are divided into a plurality of portions along the axial direction.

This is for the purpose of enhancing the degree of freedom of generation of the energy harvester apparatus as compared with that of Fig. That is, by slicing the whole set of slices into a desired number along the axial direction and connecting them in series or in parallel, it is possible to adjust the current and voltage generated by the inventive device to a desired size by the designer.

[Other Embodiments of Components]

15 is a view showing another embodiment of the drive cam 300 applied to the energy harvester of the present invention.

Referring to FIG. 15, a roller 330 may further be provided at a contact portion of the drive cam 300 with the entire main body.

The drive cam 300 of the present embodiment having such a structure can prevent the nose portion of the drive cam 300 from being worn out by providing the roller 330 at the nose portion of the cam, It is possible to effectively prevent abrasion and damage of the triboelectric element or the contact portion of the piezoelectric element to be brought into contact with the piezoelectric element 300.

Of course, the driving cam 300 having the roller 330 can be applied to all the embodiments and variations of the present invention.

16 (a) and 16 (b) are views showing a structure in which a metal electrode terminal 800 is additionally provided on the whole of the energy harvester of the present invention.

Referring to FIG. 16, the first main body 110 and the second main body 120 may further include a metal electrode terminal 800 having a large number of free electrons.

Specifically, FIG. 16A shows a structure in which the second large-sized unit 120 is provided with the first large-size unit 110 in parallel, and electrode terminals 800 made of metal are attached to the outer surfaces of the entire large- Structure.

16 (B) shows a structure in which one end of each of the second main body 120 and the first main body 110 is hinged to each other, and a metal electrode terminal 800 is formed on one side of the entire main body And an additional structure is disclosed.

The electrode terminals 800 disclosed in FIGS. 16A and 16B are respectively attached to one surface of the first main body 110 and the second main body 120 in accordance with the overall structure of the main body, Thereby increasing the charge amount of the battery.

The electrode terminal 800 may also be applied to the energy harvester structure according to each of the embodiments of the present invention described above and modifications of the embodiments.

As described above, the energy harvester of the present invention is an environmentally friendly power generation device that does not discharge any other waste or environment polluting elements during the power generation process like the existing energy harvester, It is possible to provide a new structure of energy harvester which not only improves the durability of the system but also enables continuous power generation and high space efficiency, thereby improving power generation efficiency.

It is to be understood that the present invention is not limited to the above-described embodiment, and various modifications and changes may be made without departing from the scope of the present invention.

Accordingly, the scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalents thereof are to be construed as being included within the scope of the present invention do.

The energy harvesting system of the present invention can easily obtain energy anytime and anywhere because there are various environments where large and small rotations and vibrations occur around us. In addition, since the present invention can easily and discretely be used to convert abandoned mechanical rotation and vibration energy into electric energy, it is an invention highly likely to be industrially used in view of recent trends of increasing interest as an environmentally friendly energy source.

1: Energy harvester 110: 1st generation whole
110a: segment 120: second base whole
130: third main body 200: elastic member
220: elastic member for cushioning 240: torsion spring
300: driving cam 310: rotation center
311: rotation axis 320:
330: roller 400: structure
500: guide means 510: connecting rod
520: guide member 520a: guide hole
600: housing 700: piezoelectric element
800: Electrode terminal

Claims (22)

A drive cam for performing axial rotation or oscillation motion;
And a tribological element charged by driving the drive cam, the energy harvester comprising:
Wherein the tribo element comprises a first main body and a second main body which is provided so as to be spaced apart from the first main body and which is brought into contact with the entire first main body by the force applied by the driving cam and charged with each other upon contact, And an elastic member for separating the whole of the first base and the whole of the second base from each other;
And a buffer elastic member for reducing an impact transmitted to the whole of the first base when the whole of the first base and the whole of the second base are in contact with each other is provided between the whole of the first base and the structure supporting the whole of the first base An energy harvester featuring. delete The method according to claim 1,
The elastic member
Wherein the energy harvester is installed to elastically support both ends of the whole of the second base between the whole of the first base and the whole of the second base. The method according to claim 1,
The elastic member
And the second harness is installed to elastically support both ends of the entire second harness between a whole of the second harness and a structure supporting the entire first harness. delete The method according to claim 1,
And guiding means for guiding the motion of the entire second bobbin in a linear motion when the pressing force of the driving cam is applied. The method according to claim 6,
Wherein the guide means comprises:
And a guide member having a connecting rod attached to the upper surface of the second main body and a guide hole guiding the connecting rod to linearly move. The method according to claim 1,
And the surface of the second main body to be charged is configured to have a segement shape. delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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