KR101228958B1 - Power generation apparatus using piezoelectric element - Google Patents

Abstract

The present invention relates to a power generation apparatus using a piezoelectric element, and more particularly, piezoelectric pressure pressure applied by the water falling by installing a piezoelectric element below the falling water (for example, rainwater, waterfalls, fountains, etc.). The present invention relates to a device for generating electricity by converting the device into electrical energy.
In the power generation apparatus using the piezoelectric element according to the present invention, a piezoelectric element portion including a plurality of piezoelectric elements for converting external pressure applied by the falling water into electrical energy is installed at the position where the water falls, and in the piezoelectric element portion. A rectifier circuit for full-wave rectifying the converted electrical energy into a direct current, a smoothing circuit for removing ripples included in the direct current output from the rectifying circuit, a storage battery for accumulating the direct current voltage output from the smoothing circuit and the piezoelectric element. It is configured to include an overvoltage protection circuit for blocking the overvoltage or overcurrent is applied through the part, or when the overvoltage or overcurrent is applied to the piezoelectric element portion in the rectifier circuit and the smoothing circuit or storage battery.

Description

Power generator using piezoelectric element {POWER GENERATION APPARATUS USING PIEZOELECTRIC ELEMENT}

The present invention relates to a power generation apparatus using a piezoelectric element, and more particularly, piezoelectric pressure pressure applied by the water falling by installing a piezoelectric element below the falling water (for example, rainwater, waterfalls, fountains, etc.). The present invention relates to a device for generating electricity by converting the device into electrical energy.

As is widely known, piezoelectric elements generate voltage when a pressure is applied and mechanical deformation occurs when an electric field is applied. The piezoelectric element converts mechanical vibration energy into electrical energy and electrical energy into mechanical vibration energy. do.

Representative materials of the piezoelectric element include quartz, rosell salt or barium titanate. The double crystal is an ultrasonic generator that generates ultrasonic waves of 1 to 100 MHz, the rossel salt is an acoustic device, piezoelectric semiconductors such as barium titanate have a large electromechanical coupling coefficient, and the acoustic equipment, tuning fork, mechanical filter, and ultrasonic wave in the low frequency range to several MHz. Used for delay element.

In order to generate electric energy by harvesting the vibrating energy using the characteristics of the piezoelectric element has been used in various fields.

That is, as a conventional technique for generating electrical energy from the piezoelectric element by applying vibration or mechanical energy to the piezoelectric element, the piezoelectric element is mounted on the heel of the shoe so that electrical energy is produced from the shoe every time a pedestrian walks.

In addition, the generator using the vibration of the vehicle of the Republic of Korea Patent Publication No. 2005-68849 is mounted inside the air bag constituting the air spring of the vehicle, the piezoelectric support which is elevated according to the bouncing of the vehicle, the piezoelectric element fixedly mounted to the piezoelectric support One end is fixed to the assembly, the axle of the vehicle, the other end is provided with a piezoelectric core in contact with the piezoelectric element assembly, a rectifier mounted to the piezoelectric element assembly as a power transmission line, and a capacitor for storing electricity rectified by the rectifier Is disclosed.

As described above, a technique of generating vibration or pressing force transmitted in an interior of a vehicle or a space where a lot of pedestrians move is generated and regenerating it into electric energy is disclosed. There was a disadvantage in that it is limited to the vehicle, such as being used as a rechargeable battery.

And the power generation device mounted on the shoes of the pedestrian had a problem that it is impossible to generate more than a certain amount of electrical energy.

The present invention has been made in order to solve the above problems, by installing a piezoelectric element in the lower portion of the falling water (for example, rainwater, waterfalls, fountains, etc.) is applied to the pressure energy applied by the falling water in the piezoelectric element It is an object of the present invention to provide a power generation apparatus using a piezoelectric element capable of producing renewable energy without generation of pollution and carbon dioxide by converting it into energy and generating and storing electricity.

In the power generation apparatus using the piezoelectric element according to the present invention for achieving the above object, the piezoelectric element is connected to a plurality of piezoelectric elements that are installed in the position where the water falls to connect the external pressure applied by the falling water into electrical energy part;

A rectifier circuit for full-wave rectifying the electrical energy output from the piezoelectric element unit to convert it into direct current;

A smoothing circuit for removing the ripple included in the direct current output from the rectifier circuit;

A battery for accumulating a DC voltage output from the smoothing circuit; and

And an overvoltage protection circuit for blocking the overvoltage or overcurrent when the overvoltage or overcurrent is applied through the piezoelectric element portion or when the overvoltage or overcurrent is applied to the piezoelectric element portion from a rectifying circuit and a smoothing circuit or a storage battery.

In addition, according to the present invention, the piezoelectric element or the piezoelectric element portion is mounted in a zigzag so as to have different heights inside the support frame installed vertically facing each other, so that water hitting one side falls down while hitting again under the other side. It is characterized in that it is mounted on.

In addition, according to the present invention, the piezoelectric element portion is fixed to a base after being electrically connected to an adjacent vibrating piece in a state in which the vibrating piece under pressure is exposed from the outside, and made of a rubber plate or a cover made of urethane on the vibrating piece upper part. It features.

In addition, according to the present invention, the vibration pieces are connected to each other by a coated silver plated copper wire.

According to the above-mentioned means for solving the above problems, a piezoelectric element is provided below the falling water (for example, rainwater, a waterfall, a fountain, etc.) to convert the pressure energy applied by the falling water into electrical energy in the piezoelectric element. And by power storage, it is possible to produce renewable energy without generation of pollution and carbon dioxide.

1 is a block diagram of a power generation apparatus according to an embodiment of the present invention;
2 is an exemplary diagram of a piezoelectric element constituting the piezoelectric element portion shown in FIG. 1;
3 is a diagram illustrating a connection of a piezoelectric element unit when there are a plurality of piezoelectric element units shown in FIG. 1;
4A and 4B are diagrams illustrating an installation state of the piezoelectric element shown in FIG. 1;

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a power generation apparatus according to an embodiment of the present invention, Figure 2 is an illustration of a piezoelectric element constituting the piezoelectric element shown in FIG.

As shown in FIG. 1, the generator 1 includes a piezoelectric element unit 10, an overvoltage protection circuit 20, a rectifier circuit 30, a smoothing circuit 40, and a storage battery 50.

The piezoelectric element unit 10 is formed by connecting a plurality of piezoelectric elements in a vertical or horizontal arrangement in series or in parallel or in series and parallel to obtain an appropriate voltage and current.

In the piezoelectric element 100 constituting the piezoelectric element part 10, when a pressure is applied to a thin plate (vibration piece) such as quartz, tourmaline, Rochelle salt, etc. in a predetermined direction, positive and negative charges are proportional to external forces on both sides of the plate. Appears and vibrates by the piezoelectric effect to supply a stable frequency.

As shown in FIG. 2, the piezoelectric element 100 is connected to the electrode circuit 112 by receiving the vibration piece 130 in the case 110 in which the electrode circuits 112 are arranged between the insulators 111. The lid 120 is adhered to the upper portion of the case 110 by a ring-shaped adhesive material 121 that is melted by heat to seal the inside thereof.

At this time, if the lead 120 is placed on the upper surface of the case 110 and heat is applied, the lead 120 is bonded to the case 110 while the metal adhesive material 121 is melted.

Reference numeral 131 is a wire that electrically connects the vibration piece 130 and the electrode circuit 112.

The piezoelectric element unit 10 collects minute power generated by each piezoelectric element 100 and outputs constant AC power.

The rectifier circuit 30 rectifies and converts alternating current (AC) output from the piezoelectric element unit 10 into direct current (DC).

For example, the rectifier circuit 30 may be configured as a bridge circuit in which a current is separated into an electrical conductor connected in parallel and recombined with a conductor surrounded by a network.

The smoothing circuit 40 is a low pass filter used to reduce the pulsation fraction contained in the output of the rectifier circuit 30.

The smoothing circuit 40 is composed of, for example, a capacitor C, an inductor L, and a resistor R.

The rectifier circuit 30 and the smoothing circuit 40 rectify the power collected from the piezoelectric element unit 10 and convert the output signal to a DC of a predetermined voltage through a process of removing ripple.

The storage battery 50 charges the DC voltage output from the smoothing circuit 40.

In the overvoltage protection circuit 20, when overvoltage or overcurrent is applied through the piezoelectric element part 10, or in the rectifier circuit 30, the smoothing circuit 40, or the storage battery 50, the overvoltage or overcurrent is applied to the piezoelectric element part ( 10) to protect the internal configuration of the generator 10 by blocking it if applied to.

When the output voltage of the generator 10 is low and the DC voltage output from the smoothing circuit 40 is low, the voltage regulator 45 temporarily prevents a reverse flow phenomenon in which current flows from the storage battery 50 to the smoothing circuit 40. do.

FIG. 3 is an exemplary diagram of connecting piezoelectric element portions when there are a plurality of piezoelectric element portions shown in FIG. 1.

As shown, adjacent piezoelectric element portions 10a, 10b, 10c, and 10d are connected to each other through the connecting line 11, and at this time, the connecting line 11 is provided with a switch S and is connected to each other by the switch S. Adjacent piezoelectric element portions 10a, 10b, 10c, and 10d are electrically connected or disconnected from each other.

Thereby, the electric power obtained by each piezoelectric element part 10a, 10b, 10c, 10d can be collected, and more power can be charged to the storage battery 50. FIG.

4A and 4B are diagrams illustrating the installation state of the piezoelectric element shown in FIG.

As shown in FIG. 4A, the support frame 220 is installed to face the support frame 220 vertically in the middle of the position where the water sprayed up through the nozzle 210 provided in the fountain 200 falls. Mounting the inclined plate 222 in a zigzag so as to have a different height inside so that the water hit the inclined plate 222 of one side to fall again while hitting the inclined plate 222 under the other side.

At this time, the piezoelectric element 100 or the piezoelectric element portion 10 composed of a plurality of piezoelectric elements is mounted on the inclined plate 222 to generate electrical energy (alternating current) by the pressure of water falling from each piezoelectric element 100. .

At this time, since the falling water hits the piezoelectric element 100 and does not fall directly to the bottom, but again hits the piezoelectric element 100 under the other side by the inclined plate 222, electric energy can be generated several times using the falling water once. It can improve the efficiency.

Electrical energy generated in each piezoelectric element 100 is collected in the piezoelectric element unit 10 and input to the rectifier circuit 30 or directly input to the rectifier circuit 30 is converted into direct current.

As shown in FIG. 4B, the horizontal frame 230 is installed at a position higher than the surface of the water where the water sprayed up through the nozzle 210 provided in the fountain 200 falls, and the upper portion of the horizontal frame 230. The piezoelectric element unit 10 including a plurality of piezoelectric elements 100 is installed.

The piezoelectric element 100 generates electric energy (alternating current) by the pressure of the falling water, but since the piezoelectric element part 100 is installed at a position slightly higher than the water surface, the piezoelectric element 100 when the speed of the falling water is almost maximum. ) Can generate a lot of electrical energy at once.

The electrical energy generated in each piezoelectric element 100 is collected in the piezoelectric element unit 10 and then input to the rectifier circuit 30 to be converted into direct current.

On the other hand, as shown in Figure 4b, in order to increase the efficiency of the generation of electrical energy in the present invention to remove the case 110 and the lead 120 of the piezoelectric element 100 shown in Figure 2, that is, Only electrically connecting the vibration pieces 130 and then fixing them to the base 140, such as a wood lock, and the cover 160, such as a rubber plate or urethane is sensitive to the pressure on the vibration piece 130 under pressure While reacting to protect the vibrating piece (130).

In this case, the vibration pieces 130 are connected to each other to be insulated from the outside by using a silver plated copper wire 150 coated with Teflon.

In the above example, the piezoelectric element 100 or the piezoelectric element unit 10 is installed in a fountain that artificially spouts water, but it is also installed in waterfalls, rainwater (rainwater), agricultural waterways, etc. where water naturally falls, thereby providing electrical energy. It can be created.

The embodiments and drawings attached to this specification are merely to clearly show some of the technical ideas included in the present invention, and those skilled in the art can easily infer within the scope of the technical ideas included in the specification and drawings of the present invention. Modifications that can be made and specific embodiments will be apparent that both are included in the scope of the invention.

1: generator 10: piezoelectric element part
20: overvoltage protection circuit 30: rectifier circuit
40: smoothing circuit 45: voltage regulator
50: storage battery 100: piezoelectric element

Claims (4)

delete A piezoelectric element unit including a plurality of piezoelectric elements installed at positions where water is dropped to convert external pressure applied by the falling water into electrical energy;
A rectifier circuit for full-wave rectifying the electrical energy output from the piezoelectric element unit to convert it into direct current;
A smoothing circuit for removing the ripple included in the direct current output from the rectifier circuit;
A battery for accumulating a DC voltage output from the smoothing circuit; and
And an overvoltage protection circuit for blocking the overvoltage or overcurrent when the overvoltage or overcurrent is applied through the piezoelectric element portion or when the overvoltage or overcurrent is applied to the piezoelectric element portion from a rectifying circuit and a smoothing circuit or a storage battery.
The piezoelectric element or the piezoelectric element portion is mounted in a zigzag so as to have different heights inside the support frame installed to face vertically, it is mounted on the top of the inclined plate so that the water hitting one side falls while hitting again under the other side. Power generator using a piezoelectric element. The method of claim 2,
The piezoelectric element is electrically connected to an adjacent vibrating piece in a state in which the vibrating piece under pressure is exposed from the outside and is fixed to a base, and the piezoelectric element is formed by covering a rubber plate or a urethane cover on the vibrating piece. Used power generation device. The method of claim 3,
The vibration pieces are connected to each other using a piezoelectric element, characterized in that connected by a silver plated copper wire coated.

Images