KR101234562B1 - Vibration generating module with external vibration permission structure and bending stress induced hole for hibrid energy harvesting - Google Patents

Abstract

PURPOSE: A hybrid energy harvesting vibration power generation module having an external vibration application structure and a bending force induction hole is provided to harvest electrical energy enhanced by a piezoelectric by arranging a magnetic body to be radially concentrated in the center of a coil. CONSTITUTION: An electromagnetic induction coil unit(30) is located in both sides or in one side of an upper base(20a) and an lower base(20b). A fixing block is arranged in between the upper base and the lower base. A vibration substrate(50) is installed in a free end side to vibrate with a maximum amplitude by an external force and an elastic restoration force. A unit piezoelectric device(60) is installed in the vibration substrate and generates a current by receiving a variation of pressure due to a bending transformation. A magnetic body(70) is installed in the free end side of the vibration substrate and vibrates by external vibration. A large number of vibration-induced spring shocks or vibrations are to be applied at the top of the base or at the lower base. The vibration stress concentration is formed at the subtrate. [Reference numerals] (AA) External shock/vibration

Description

Hybrid generating harvesting vibration power generation module with external vibration application structure and bending stress induction hole {Vibration generating module with external vibration permission structure and bending stress induced hole for hibrid energy harvesting}

The present invention relates to a vibration power generation module capable of acquiring electrical energy from vibration energy, and in particular, a plurality of unit generators, which are piezoelectric, are integrated in an area where bending stress is concentrated, and at the same time, a magnetic material is arranged radially at the center of the coil. The present invention relates to a hybrid energy harvesting vibration power generation module having an external vibration applying structure and a bending stress inducing hole, which can be disposed to pass through to obtain electric energy increased according to a piezoelectric method, an electromagnetic induction method, and an upper and lower vibration applying structure.

The energy harvesting technology in the broad range is based on the amount of electricity produced, and the energy harvesting technology (Micro power generation) that collects and stores the generated energy using the environment (external power of daily life) as the energy source, and solar, solar, wind, and hydropower. It can be classified as a renewable energy generation technology (macro power generation) that generates electricity from environmentally friendly energy sources such as green, blue and geothermal.

Here, energy harvesting may be defined as regenerating energy by harvesting or scavenging energy that is consumed or unused.

Also, in energy harvesting devices that convert ambient energy into electric power, vibration-based devices include harvesters using piezoelectric, electrostatic, and electromagnetic induction.

The technologies for maximizing power generation in energy harvesting with dual piezoelectric vibration method are proposed resonant frequency tuning technology, bandwidth expansion technology, harvest energy amplification technology and generator hybridization technology. For example, the generator hybridization technology includes US Patent No. 7397169, US Patent No. 7800278, US Patent No. 7116036, and Korean Patent Publication No. 2011-26644.

In addition, energy harvesting technology using electromagnetic induction is energy harvesting technology using electromagnetic induction method, which is the most traditional power generation technology. It is possible to use permanent vibrations or coil movements to use surrounding vibrations, and to harvest energy regardless of the direction. It is proposed. Such technologies include Korea Publication No. 2011-54860, Publication No. 2011-29930, and Publication No. 2010-31357.

However, these background technologies have been applied by adopting one method, and there is a problem that there is a limit for increasing energy harvest.

U.S. Patent No. 6,58,970 discloses an energy harvester generator having a structural member coated with piezoelectric material resonating at different main frequencies. Korean Patent Publication No. 2010-99014 discloses that a mass installed in each cantilever is different from any one or more of a position, mass, and size installed on the cantilever, so that at least one of the plurality of cantilever assemblies is different from other cantilever assemblies. An energy harvester with frequency is presented. In Korean Patent Publication No. 2010-125090, it is possible to smoothly generate power even when a structure vibrates in any direction, and power generation can be easily extended to a range having a variety of excitation frequencies since the range of smooth resonant frequencies can be easily extended. An energy harvester unit module is presented. In Japanese Patent Laid-Open No. 2008-67451, the piezoelectric elements are radially disposed in a radial direction, and one end in the longitudinal direction is integrally supported by a circumferential first supporting member so that the piezoelectric plates do not contact each other, and the other end. An energy conversion apparatus for converting vibration energy into electrical energy efficiently by integrating and supporting the same as a supporting member of a second wheel is proposed. However, these patent documents are not only a single method using a piezoelectric element, but also a technique for increasing energy yield by inducing higher bending stresses to be generated with less applied vibration is not proposed.

According to the present invention, a plurality of unit generators, which are piezoelectric, are integrated in a region where bending stress is concentrated, and at the same time, the magnetic bodies are arranged so as to pass radially concentrated at the center of the coil, thereby increasing the piezoelectric, electromagnetic inductive, and external vibration applying structures. It is an object of the present invention to provide a hybrid energy harvesting vibration power generation module having a bending stress induction hole capable of harvesting electrical energy.

According to a suitable embodiment of the present invention,

A pair of upper and lower bases facing each other in a plate shape;

An electromagnetic induction coil part positioned at both or one of the upper and lower bases to induce an external magnetic force change to generate a current;

A cylindrical fixing block disposed between the upper base and the lower base and fixed to one side and movable to the other side;

A plurality of vibrating substrates having one fixed end fixed to the fixed block and the other free end positioned radially in the electromagnetic induction coil part and installed to vibrate at the maximum amplitude at the free end by external force and elastic restoring force;

At least one unit piezoelectric element installed on the vibrating substrate to generate a current in response to a pressure change due to bending deformation;

A magnetic body installed at a free end side of the plurality of vibrating substrates to insert the electromagnetic induction coil part by external vibration; And

It includes a plurality of vibration induction springs installed on the moving direction of the fixed block for the external shock or vibration is applied to the upper base or the lower base including the fixed block,
The vibrating substrate is provided with a stress concentrating hole or a plurality of stress concentrating holes distributed in a predetermined region.
A plurality of unit piezoelectric elements are integrated in a stack in the stress concentration opening or the region where the stress concentration hole is formed, and the vibration substrate has a stress concentration induction groove for inducing bending stress to the stress concentration opening or the stress concentration hole on the hypotenuse side. It provides a hybrid energy harvesting vibration generating module having a bending stress induction hole characterized in that it is further formed.

In addition, the vibration induction spring is located between the lower base and the lower surface of the fixed block is characterized in that it has a lower fixed / upper vibration application structure.

In addition, the fixing block is fixed to both the upper and lower bases;

A diaphragm movable in contact with a magnetic body is installed at the center of the upper base;

The vibration induction spring is installed to induce a return operation of the diaphragm, characterized in that it has a lower fixed / upper vibration application structure.

In addition, the vibration induction spring is located between the upper base and the upper surface of the fixed block is characterized in that it has an application structure to the upper fixed / lower vibration.

A pair of upper and lower bases facing each other in a plate shape;
An electromagnetic induction coil part positioned at both or one of the upper and lower bases to induce an external magnetic force change to generate a current;
A cylindrical fixing block disposed between the upper base and the lower base and fixed to one side and movable to the other side;
A plurality of vibrating substrates having one fixed end fixed to the fixed block and the other free end positioned radially in the electromagnetic induction coil part and installed to vibrate at the maximum amplitude at the free end by external force and elastic restoring force;
At least one unit piezoelectric element installed on the vibrating substrate to generate a current in response to a pressure change due to bending deformation;
A magnetic body installed at a free end side of the plurality of vibrating substrates to insert the electromagnetic induction coil part by external vibration; And
It includes a plurality of vibration induction springs installed in the direction of movement of the fixed block for external shock or vibration is applied to the upper base or the lower base including the fixed block,
The vibration induction spring is located between the upper base and the upper surface of the fixed block,

At the same time, the rotary blade for forcibly vibrating the magnetic body by continuously hitting the projection formed on the magnetic body;

Including a wind pressure duct for introducing wind pressure to the rotary blade through the upper base is characterized in that it has an upper fixed / lower and the external vibrating application structure.

In addition, the magnetic body is characterized in that it forms a divided form so as to be individually installed on each of the free ends of the plurality of vibration substrate.

In addition, the magnetic material is characterized in that a single shape to be commonly connected to the free end of the plurality of vibration substrate.

In addition, the electromagnetic induction coil unit,

An inner coil forming a cylinder;

Characterized in that it consists of an outer coil is formed in a cylindrical shape around the inner coil.

In addition, the electromagnetic induction coil unit is characterized in that composed of individual coils respectively corresponding to a plurality of magnetic material.

In addition, the vibrating substrate is characterized in that the fan-shaped form that the cross section is increased from the free end side to the fixed end side.

In addition, the vibrating substrate is characterized in that the rectangular shape of the cross-section is increased from the free end side to the fixed end side.

In addition, the vibrating substrate is installed in a single layer structure or separated into upper, lower, characterized in that it is installed in a multi-layer structure having a constant interval from each other.

In addition, the vibration substrate is provided with a stress concentration opening penetrated to a predetermined size;

A plurality of unit piezoelectric elements are integrated in a stack in the stress concentration opening.

In addition, the vibration substrate is formed with a plurality of stress concentration holes distributed in a predetermined area;

In the region where the stress concentration hole is formed, a plurality of unit piezoelectric elements are integrated in a stack.

In addition, the vibrating substrate is characterized in that the stress concentration guide groove is further formed on the hypotenuse side to induce bending stress to the stress concentration opening.

In addition, the vibrating substrate is characterized in that the stress concentration guide groove is further formed to induce bending stress to the region where the stress concentration hole is formed on the hypotenuse side.

The hybrid energy harvesting vibration power generation module having an external vibration applying structure and a bending stress inducing hole according to the present invention integrates a plurality of unit generators, which are piezoelectric, in a region where bending stress is concentrated, and at the same time, a magnetic body is radially concentrated at the center of the coil. Arranged so as to pass through the array, the electric energy increased by the piezoelectric method, the electromagnetic induction method, and the vibration structure that operates with high sensitivity to external vibration or impact can be harvested.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a front sectional view of a hybrid energy harvesting vibration generation module according to a first embodiment of the present invention.
FIG. 2A is a cross-sectional view taken along line AA of FIG. 1. FIG.
Figure 2b is a view showing a modification of the magnetic material and the coil in Figure 2a.
3A and 3B are plan views showing various configurations of a magnetic material and a coil applied to the present invention.
Figure 4 is a plan view showing an example of a vibration substrate applied to the first embodiment of the present invention.
5 is a plan view showing another example of a vibration substrate applied to the first embodiment of the present invention.
6A and 6B are cross-sectional views taken along line BB of FIG. 5 in a state where unit piezoelectric elements are stacked;
7 is a front sectional view of a hybrid energy harvesting vibration generating module according to a second embodiment of the present invention.
8 is a front sectional view of a hybrid energy harvesting vibration generating module according to a third embodiment of the present invention.
9 is a front sectional view of a hybrid energy harvesting vibration generating module according to a fourth embodiment of the present invention.
10 is a plan view showing a modified installation example of the vibration substrate to be applied to the present invention.
FIG. 11 is a plan view of a vibrating substrate showing an installation structure of a unit piezoelectric element in FIG. 10. FIG.
12 is a plan view showing a modification of FIG.
FIG. 13 is a sectional view taken along the line DD of FIG. 12 showing a state in which unit piezoelectric elements are stacked;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

The hybrid energy harvesting vibration power generation module having an external vibration applying structure and a bending stress inducing hole according to the present invention may be implemented in four embodiments according to a fixing method and a vibration applying structure.

≪ Embodiment 1 >

According to the first embodiment of the present invention, the 'hybrid energy harvesting vibration generating module having an external vibration applying structure and a bending stress inducing hole' is according to a lower fixed / upper vibration applying structure.

The first embodiment is provided with a plate-shaped upper base 20a and a lower base 20b, respectively, as shown in FIGS. 1 and 2b. The lower base 20b is configured in the shape of a disc, but is not limited thereto. The upper and lower bases 20a and 20b are made of a material except for non-ferrous metals in order to prevent the magnetic body 70 to be adsorbed, which will be described later.

The electromagnetic induction coil unit 30 is disposed on the upper and lower bases 20a and 20b, respectively. The electromagnetic induction coil unit 30 is fixedly supported at the centers of the upper and lower surfaces of the upper and lower bases 20a and 20b, respectively. The electromagnetic induction coil unit 30 has a coil induced by an external magnetic force change to generate a current. In one embodiment, the electromagnetic induction coil unit 30 includes an inner coil 32 having a cylindrical shape as shown in FIG. 3A and an outer coil 34 formed in a cylindrical shape around the inner coil 32. These inner coils 32 and outer coils 34 are each wound around a coil and disposed on the same central axis. The number of turns of the coil may be the same or different between the inner and outer coils 32 and 34. At this time, between the outer circumferential surface of the inner coil 32 and the inner circumferential surface of the outer coil 34, the magnetic body 70, which will be described later, has a cylindrical gap that can be inserted freely. In addition, the electromagnetic induction coil unit 30 may be configured as individual coils 130a respectively corresponding to the plurality of magnetic bodies 70 as shown in FIGS. 2A and 3A.

The fixed block 40 is disposed between the upper base 20a and the lower base 20b. The fixed block 40 is fixed to the upper base 20a and is installed to be movable relative to the lower base 20b. At this time, the fixed block 40 is installed to be movable in the vertical direction with respect to the upper surface of the lower base (20b). To this end, a fitting axis may be formed on the bottom surface of the fixing block 40 to have a structure for inserting the lower base 20b or may have a shaft structure in an opposite direction thereof. The fixed block 40 is configured in a cylindrical shape for the radial arrangement of the vibrating substrate 50 to be described later, but the present invention is not limited to this form. In this embodiment, the fixed block 40 is installed in a plurality of stacked structure to install the vibrating substrate 50 in a double layer is fixed by the bolt 44 as a fixing means is assembled into a body.

The fixed block 40 is provided with a plurality of vibrating substrates 50 on the same plane. The plurality of vibrating substrates 50 are installed so that the free end has the maximum width and vibrates up and down by external force and elastic restoring force. That is, the vibrating substrate 50 has a cantilevered shape in which one fixed end is fixed to the fixed block 40 and the other free end is located in the electromagnetic induction coil unit 30. Therefore, the plurality of vibrating substrates 50 are arranged radially around the inner coil 32 of the electromagnetic induction coil unit 30 to increase the degree of integration of the magnetic body 70. The vibrating substrate 50 is made of a material capable of resisting the bending moment with elastic force and returning to the elastic restoring force when removing the bending moment. In the present embodiment, the vibrating substrate 50 is preferably configured in the shape of a fan shape whose cross section is increased from the free end side to the fixed end side in order to increase the holding force when the vibrating substrate 50 vibrates. It is not limited.

The vibrating substrate 50 may be installed in two types of structures. The first aspect is to install the vibrating substrate 50 in a single layer structure, the second aspect is to be provided in a multi-layer structure with a constant interval as shown in FIG. As such, when the vibrating substrate 50 is installed in a multilayer structure, the unit piezoelectric element 60 to be described later may be further densified to increase energy harvesting efficiency per unit area.

One or more unit piezoelectric elements 60 are installed on the vibrating substrate 50, respectively. The unit piezoelectric element 60 receives a pressure change caused by bending deformation during vibration of the vibrating substrate 50 to generate a potential difference to generate a current. The unit piezoelectric element 60 may be made of a material such as quartz, rosell salt, barium titanate, ceramic, and the like which are known. In this case, the unit piezoelectric element 60 may be installed in two structures according to the stress concentration structure of the vibrating substrate 50.

The first structure, as shown in FIG. 4, forms a stress concentration opening 52 penetrated with a constant size at a position near the fixed end of the vibrating substrate 50, and a plurality of unit piezoelectric elements are formed in the stress concentration opening 52. 60 is integrated in a laminated structure. At this time, one unit piezoelectric element 60 receives a compressive force and a tensile force along the vertical movement direction of the vibrating substrate 50 to generate a current. In FIG. 4, the stress concentration opening 52 is composed of one, but may be divided into several.

In the second structure, as shown in FIGS. 5 and 6, a plurality of stress concentration holes 54 are formed in a predetermined area 51 of the vibrating substrate 50, and a plurality of stress concentration holes 54 are formed in the region where the stress concentration holes 54 are formed. Unit piezoelectric elements 60 are integrated in a stacked structure. At this time, the size of the stress concentration hole 54 is relatively smaller than the stress concentration opening 52.

The reason why the unit piezoelectric element 60 is installed in the region 51 having the stress concentration opening 52 or the stress concentration hole 54 is that the bending stress is concentrated when the vibration substrate 50 vibrates so that the displacement is largely generated. For sake.

The vibrating substrate 50 is provided with a magnetic body 70 which vibrates by external vibration. The magnetic body 70 is provided on the free end side of the vibrating substrate 50 and is provided close to the electromagnetic induction coil unit 30. The magnetic body 70 is arranged in a circular shape in a cylindrical void formed between the inner coil 32 and the outer coil 34. The magnetic body 70 may directly receive external vibration in order to resonate with external vibration. The magnetic body 70 may be configured in two forms. The magnetic body 70 of the first form forms a divided form so as to be individually installed at the free ends of the plurality of vibrating substrates 50 as shown in FIG. 3B, and the magnetic body 70 of the second form has a plurality of shapes as shown in FIG. It will form a single shape so as to be commonly connected to the free end of the vibrating substrate 50. Therefore, in the second form, the magnetic body 70 is formed in a cylindrical shape.

In order for external shock or vibration to be applied to the upper base 20a including the fixed block 40, a plurality of vibration induction springs 80 are installed on the moving direction of the fixed block 40. That is, the vibration induction spring 80 is installed on the lower side of the lower base (20b) and the fixed block 40. At this time, the vibration induction spring 80 is preferably installed at regular intervals in the circumference. Preferably, the vibration induction spring 80 is selected to have a spring constant to induce resonance of the magnetic body 70 in accordance with the vibration period applied from the outside.

The operation of the first embodiment configured as described above will be described.

First, when external shock or vibration is applied to the upper base 20a, the fixed block 40 vibrates with the upper base 20a, and at the same time, the vibrating substrate 50 connected to the fixed block 40 is also present. It will vibrate.

At this time, the vibrating substrate 50 is a vertical double layer structure, the free end is moved with the maximum amplitude up and down about the fixed end. Therefore, the magnetic body 70 installed at the free end of the vibrating substrate 50 resonates with the vibrating substrate 50. That is, the magnetic body 70 repeats the movement up and down with the fixed block 40 side as a fixed end. Therefore, the magnetic body 70 generates relative speed while repeatedly inserting the inner and outer coils 32 and 34, and thus electromotive force is generated in the inner and outer coils 32 and 34 to generate current. At this time, the magnetic body 70 is radially concentrated around the center of the inner coil 32, the magnitude of the electromotive force generated in the inner and outer coils (32, 34) is increased.

At the same time, higher bending stress is generated in the region 51 having the stress concentrating opening 52 or the stress concentrating hole 54 provided with the unit piezoelectric element 60 according to the free end resonance of the vibrating substrate 50. Therefore, the yield of current obtained from the unit piezoelectric element 60 is increased. In addition, since the vibrating substrate 50 is installed in a multilayer structure, the unit piezoelectric element 60 is further densified, thereby increasing the energy harvesting efficiency per unit area.

Second Embodiment

According to the second embodiment of the present invention, the 'hybrid energy harvesting vibration generating module having an external vibration applying structure and a bending stress inducing hole' is shown in FIG. 7 according to a lower fixed / upper vibration applying structure. In FIG. 7, reference numerals denote the same or equivalent parts as those in the first embodiment using the same reference numerals.

The hybrid energy harvesting vibration generating module having the external vibration applying structure and the bending stress guide hole according to the second embodiment of the present invention has the same components as the first embodiment. However, the fixing block 40 is fixed to both the upper and lower bases 20a and 20b, and the diaphragm 22 which is movable in contact with the magnetic body 70 is installed at the center of the upper base 20a and induces vibration. The spring 80 is characterized in that it is installed to induce the return operation of the diaphragm 22.

Therefore, in the second embodiment, when external shock or vibration is applied to the upper base 20a, the diaphragm 22 repeatedly moves up and down while the fixing block 40 is fixed, and abuts against the diaphragm 22. The magnetic body 70 is moved up and down to vibrate while inserting the electromagnetic induction coil unit 30 to obtain a current in the electromagnetic induction coil unit 30.

As described above, even in the second embodiment, external vibration is applied to the stress concentration opening 52 or the stress concentration unit in which the unit piezoelectric element 60 is installed according to the free end vibration of the vibrating substrate 50 that is the unit generator as shown in FIGS. 4 and 5. Higher bending stresses are generated in the region 51 having the holes 54. Therefore, the yield of current obtained from the unit piezoelectric element 60 is increased. In addition, since the vibrating substrate 50 is installed in a multilayer structure, the unit piezoelectric element 60 is further densified, thereby increasing the energy harvesting efficiency per unit area.

Third Embodiment

According to the third embodiment of the present invention, the 'hybrid energy harvesting vibration generating module having an external vibration applying structure and a bending stress inducing hole' is shown in FIG. 8 according to a lower fixed / upper vibration applying structure. In FIG. 8, the same reference numerals as those of the first embodiment will be described using the same reference numerals.

In the case of the third embodiment is the same as the configuration of the first embodiment, as shown in Figure 8 only the position of the vibration induction spring 80 is installed in the opposite direction. That is, as shown in Figure 8 is characterized in that the vibration induction spring 80 is located between the upper base 20a and the upper surface of the fixed block 40. Therefore, the vibration or shock is applied to the lower lower base 20b while the upper upper base 20a is fixed.

First, when external shock or vibration is applied to the lower base 20b, the fixed block 40 vibrates with the upper base 20a, and at the same time, the vibrating substrate 50 connected to the fixed block 40 is also present. It will vibrate.

At this time, the vibrating substrate 50 is moved around the fixed end with the maximum amplitude up and down. Therefore, the magnetic body 70 installed at the free end of the vibrating substrate 50 vibrates together with the vibrating substrate 50. That is, the magnetic body 70 repeats the movement up and down with the fixed block 40 side as a fixed end. Therefore, the magnetic body 70 generates relative speed while repeatedly inserting the inner and outer coils 32 and 34, and thus electromotive force is generated in the inner and outer coils 32 and 34 to generate current. At this time, the magnetic body 70 is radially concentrated around the center of the inner coil 32, the magnitude of the electromotive force generated in the inner and outer coils (32, 34) is increased.

At the same time, the region 51 having the stress concentration opening 52 or the stress concentration hole 54 provided with the unit piezoelectric element 60 according to the free end vibration of the vibrating substrate 50 is higher than that of the first embodiment. Flexural stress is generated. Therefore, the yield of current obtained from the unit piezoelectric element 60 is increased. In addition, since the vibrating substrate 50 is installed in a multilayer structure, the unit piezoelectric element 60 is further densified, thereby increasing the energy harvesting efficiency per unit area.

<Fourth Embodiment>

The hybrid energy harvesting vibration generating module having the external vibration applying structure and the bending stress inducing hole according to the fourth embodiment of the present invention is shown in FIG. 9 according to the upper fixed / lower and external vibration applying structure. In FIG. 9, the same reference numerals as those of the first embodiment will be described with the same reference numerals.

The fourth embodiment has the same structure and structure as the third embodiment, and further has an external vibration applying structure.

That is, as shown in FIG. 9, the vibration induction spring 80 is positioned between the upper base 20a and the upper surface of the fixed block 40, and at the same time continuously strikes the protrusion 71 formed in the magnetic body 70. It further comprises a wind pressure duct 92 for introducing the wind pressure to the rotary blade 90 by inserting the rotary blade 90, the upper base 20a for forcibly vibrating the magnetic body (70). At this time, the discharge port of the wind pressure duct 92 may be configured to be biased so that the rotation occurs in the rotary blade (90).

In addition, the magnetic body 70 may be, for example, a cylindrical cut in two directions by cutting in the radial direction. The rotary blade 90 is located at the center side in the arrangement region of the magnetic body 70 and is installed to be free to rotate. The rotary blade 90 rotates in one direction by the wind speed introduced through the wind pressure duct 92. At this time, the wind pressure duct 92 serves to introduce the wind speed generated from the outside to the rotary blade 90 side.

Therefore, when the rotary blade 90 is rotated in one direction, the divided magnetic body 70 of both sides is vibrating while changing the vertical direction to each other. At this time, the rotary blade 90 continuously strikes the protrusion 71 projecting on the inner surface of the magnetic body 70 and at the same time, the vibrating substrate 50 can be fixed to the fixed end by the elastic restoring force of the vibrating substrate 50. It will vibrate. Therefore, the magnetic body 70 is inserted through the electromagnetic induction coil unit 30 repeatedly to generate a current. At the same time, the lower base 20b is vibrated by the vibration induction spring 80 so that the magnetic body 70 penetrates deep into the electromagnetic induction coil unit 30, thereby increasing the electrical energy yield.

In addition, as in the first embodiment, higher bending stress is applied to the region 51 having the stress concentration opening 52 or the stress concentration hole 54 in which the unit piezoelectric element 60 is installed in accordance with the free end vibration of the vibrating substrate 50. Is generated. Therefore, the yield of current obtained from the unit piezoelectric element 60 is increased. In addition, since the vibrating substrate 50 is installed in a multilayer structure, the unit piezoelectric element 60 is further densified, thereby increasing the energy harvesting efficiency per unit area.

The magnetic body 70 may be formed in a single form, not divided. In this case, the rotary blade 90 may continuously hit only one portion of the magnetic body 70 to obtain the same action.

On the other hand, the present invention is configured in a circular shape as shown in the hybrid energy harvesting vibration power generation module of the embodiment, but may also be configured in a square shape as shown in FIG. When configured in a square shape, the upper and lower bases (20a, 20b) is in the form of a square plate, the fixed block 40 has a rectangular cylindrical structure and the other components are configured the same, a plurality of vibration substrates 50 Has a right triangle with hypotenuse. At this time, a stress concentration guide groove 152 may be further formed on the hypotenuse side to induce bending stress to the stress concentration opening 52 as shown in FIG. 11. In addition, the vibrating substrate 50 may further include a stress concentration guide groove 152 for inducing bending stress to a region 51 in which the stress concentration hole 54 is formed on the hypotenuse side as shown in FIG. 12. Therefore, the amount of bending deformation of the unit piezoelectric element 60 is increased, and the yield of electrical energy is improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

20a: upper base
20b: lower base
32: inner coil
34: outer coil
40: fixed block
50: vibrating substrate
52: stress concentration opening
54: stress concentration hole
60: piezoelectric element
70: magnetic material
80: vibration induction spring
90: rotor blade
92: wind duct
132: individual coil
152: stress concentration guide groove

Claims (16)

A pair of upper and lower bases 20a and 20b facing each other in a plate shape;
An electromagnetic induction coil part 30 positioned at both or one of the upper and lower bases 20a and 20b to induce an external magnetic force change to generate a current;
A cylindrical fixing block (40) disposed between the upper base (20a) and the lower base (20b) and fixed to one side and movable to the other side;
One fixed end is fixed to the fixed block 40 and the other free end is located in the electromagnetic induction coil unit 30 and arranged radially, a plurality of installed to vibrate at the maximum amplitude at the free end by the external force and elastic restoring force A vibrating substrate 50;
At least one unit piezoelectric element (60) installed in the vibrating substrate (50) to generate a current in response to a pressure change due to bending deformation;
A magnetic body 70 installed at the free end side of the plurality of vibrating substrates 50 to vibrate by external vibration to insert the electromagnetic induction coil unit 30; And
It includes a plurality of vibration induction springs 80 installed on the moving direction of the fixed block 40 to apply external shock or vibration to the upper base 20a or the lower base 20b including the fixed block 40. and,
The vibrating substrate 50 is formed with a stress concentration opening 52 penetrated to a predetermined size or a stress concentration hole 54 distributed in a plurality in a predetermined region,
A plurality of unit piezoelectric elements 60 are integrated in a stack in an area where the stress concentration opening 52 or the stress concentration hole 54 is formed.
The vibrating substrate 50 has a bending stress inducing hole, characterized in that the stress concentration opening 52 or the stress concentration inducing groove 152 for inducing bending stress to the stress concentration hole 54 is further formed on the hypotenuse side. Hybrid energy harvesting vibration generating module having. The method of claim 1,
The vibration induction spring (80) is located between the lower base (20b) and the lower surface of the fixed block 40, the external vibration application and bending stress induction hole, characterized in that having a lower fixed / upper vibration application structure Having hybrid energy harvesting vibration generating module. The method of claim 1,
The fixed block 40 is fixed to both the upper and lower bases (20a, 20b);
In the center of the upper base (20a) is provided a diaphragm 22 which is abuts on the magnetic body (70) and is movable;
The vibration induction spring 80 is installed to induce a return operation of the diaphragm 22, and has a lower fixed / upper vibration application structure, characterized in that the external vibration application and bending stress hybrid energy harvesting vibration generation hole module. The method of claim 1,
The vibration induction spring (80) is located between the upper base (20a) and the upper surface of the fixed block 40 has an external vibration application and bending stress induction hole, characterized in that having an upper fixed / lower vibration application structure Hybrid energy harvesting vibration generation module. A pair of upper and lower bases 20a and 20b facing each other in a plate shape;
An electromagnetic induction coil part 30 positioned at both or one of the upper and lower bases 20a and 20b to induce an external magnetic force change to generate a current;
A cylindrical fixing block (40) disposed between the upper base (20a) and the lower base (20b) and fixed to one side and movable to the other side;
One fixed end is fixed to the fixed block 40 and the other free end is located in the electromagnetic induction coil unit 30 and arranged radially, a plurality of installed to vibrate at the maximum amplitude at the free end by the external force and elastic restoring force A vibrating substrate 50;
At least one unit piezoelectric element (60) installed in the vibrating substrate (50) to generate a current in response to a pressure change due to bending deformation;
A magnetic body 70 installed at the free end side of the plurality of vibrating substrates 50 to vibrate by external vibration to insert the electromagnetic induction coil unit 30; And
It includes a plurality of vibration induction springs 80 installed on the moving direction of the fixed block 40 to apply external shock or vibration to the upper base 20a or the lower base 20b including the fixed block 40. and,
The vibration induction spring 80 is located between the upper base 20a and the upper surface of the fixed block 40,
At the same time, the rotary blade 90 for forcibly vibrating the magnetic body 70 by hitting continuously the projection formed on the magnetic body 70;
External vibration application and bending stress induction, characterized in that it has an upper fixed / lower and external vibration application structure including a wind pressure duct 92 for introducing wind pressure to the rotary blade 90 by inserting the upper base (20a) Hybrid energy harvesting vibration generation module with holes. The method according to any one of claims 1 to 5,
The magnetic material 70 is a hybrid energy harvesting vibration power generation module having an external vibration application and bending stress induction hole, characterized in that the partition is formed so as to be individually installed on each of the free ends of the plurality of vibration substrate (50). The method according to any one of claims 1 to 5,
The magnetic material 70 is a hybrid energy harvesting vibration power generation module having an external vibration application and bending stress induction hole, characterized in that a single form so as to be connected in common to the free ends of the plurality of vibration substrate 50 in common. The method according to any one of claims 1 to 5,
The electromagnetic induction coil unit 30,
An inner coil 32 forming a cylindrical shape;
Hybrid energy harvesting vibration power generation module having an external vibration application and bending stress induction hole, characterized in that consisting of the outer coil 34 is formed in a cylindrical shape around the inner coil (32). The method according to any one of claims 1 to 5,
The electromagnetic induction coil unit 30,
Hybrid energy harvesting vibration generation module having an external vibration application and bending stress induction hole, characterized in that composed of a separate coil (130a) respectively corresponding to a plurality of magnetic material (70). The method according to any one of claims 1 to 5,
The vibrating substrate 50 is a hybrid energy harvesting vibration generation module having an external vibration application and bending stress induction hole, characterized in that the cross-section is increased from the free end side to the fixed end side. The method according to any one of claims 1 to 5,
The vibrating substrate 50 is a hybrid energy harvesting vibration power generation module having an external vibration applied and bending stress induction hole, characterized in that the cross-section is increased in shape from the free end side to the fixed end side. The method according to any one of claims 1 to 5,
The vibrating substrate 50 is installed in a single layer structure or separated into upper and lower, hybrid energy harvesting vibration generation module having an external vibration application and bending stress induction hole, characterized in that installed in a multi-layer structure having a predetermined distance from each other. The method of claim 5,
The vibrating substrate 50 is formed with a stress concentration opening 52 penetrated to a predetermined size;
Hybrid energy harvesting vibration generation module having an external vibration application and bending stress induction hole, characterized in that a plurality of unit piezoelectric elements (60) are integrated in a stack in the stress concentration opening (52). The method of claim 5,
The vibrating substrate 50 is provided with a stress concentration hole 54 is distributed in a plurality in a predetermined area;
Hybrid energy harvesting vibration generation module having an external vibration application and bending stress induction hole, characterized in that the plurality of unit piezoelectric elements (60) are integrated in a stack in the region where the stress concentration hole (54) is formed. The method of claim 13,
The vibration substrate 50 is a hybrid energy having an external vibration application and bending stress induction hole, characterized in that the stress concentration guide groove 152 is further formed on the hypotenuse side to induce bending stress to the stress concentration opening 52. Harvesting vibration generating module. The method of claim 14,
The vibration substrate 50 has an external vibration application and bending stress induction hole, characterized in that the stress concentration induction groove 152 is further formed on the hypotenuse side to induce bending stress to the region where the stress concentration hole 54 is formed. Having hybrid energy harvesting vibration generating module.

Images