JP5792757B2 - Vibration power generation system - Google Patents

Description

The present invention relates to vibration power generation system that is provided on the road on which the vehicle is passing.

  In recent years, as alternative energy to fossil fuels such as oil and coal has attracted attention, various types of vibration power generators (hereinafter referred to as conventional examples) that generate power using vibration energy as disclosed in Japanese Patent Laid-Open No. 8-14154 have been proposed. Yes.

  This conventional example has a structure in which pressure due to vibration is converted into electric power by a piezoelectric element. For example, it is provided on a road through which a vehicle passes, and electricity is obtained from vibration energy generated when the vehicle passes through the upper part.

  Accordingly, the conventional example is expected to generate a stable amount of power generation as compared with a power generation device that depends on weather conditions such as solar power generation and wind power generation.

JP-A-8-14154

  However, in reality, all of the conventional examples have low power generation capacity and have not yet reached a practical stage.

The present inventors have proceeded with further research and development on or more power generation amount can be obtained from the vibration generator apparatus described above, as a result, have developed an extremely high commercial value innovative vibration power generation system.

  The gist of the present invention will be described with reference to the accompanying drawings.

A vibration power generation system including a vibration power generation apparatus 10 on a road 21 on which a vehicle 20 passes , the vibration power generation apparatus 10 is configured by a box-shaped base 1 including a top plate portion 1A, a side plate portion 1B, and a bottom plate portion 1C. A piezoelectric element 2 for generating electric power by vibration is provided on the back surface portion 1 ″ of the top plate portion 1A of the box-shaped substrate 1, and the width of the road 21 is provided on the front surface portion 1 ′ of the top plate portion 1A. Convex portions 3 having a predetermined length in the direction are provided, and a plurality of the convex portions 3 are arranged in parallel in the length direction of the road 21, and the surface portion 1 of the box-shaped substrate 1 is disposed on the road 21. A concave portion 22 for arranging the box-shaped base body 1 is provided so that 'is exposed on the road surface, and a gap is provided between the inner peripheral surface of the concave portion 22 and the outer peripheral surface of the box-shaped base body 1, The base body 1 is swingably provided in the recess 22, and a drain recess 23 is provided on the bottom surface of the recess 22. Those of the vibration generating system according to claim.

2. The vibration power generation system according to claim 1, wherein the box-shaped substrate 1 is made of aluminum.

Since the present invention is configured as described above, compared to the above-described conventional example, the piezoelectric element can be vibrated well, and a larger amount of power can be obtained. such as Re is and cost depreciation, the extremely high commercial value innovative vibration power generation system.

It is explanatory drawing of the vibration electric power generation system which concerns on a present Example. It is a perspective view which shows a present Example. It is use condition explanatory drawing of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

When the vehicle 20 passes through the surface portion 1 ′ of the box-shaped substrate 1, the top plate portion 1A of the box-shaped substrate 1 vibrates, and the piezoelectric element 2 provided on the back surface portion 1 ″ of the top plate portion 1A exerts a power generation action. .

In the vibration power generation device according to the present invention, a convex portion 3 is provided on the surface portion 1 ′ of the top plate portion 1A. When the tire of the vehicle 20 passes through the convex portion 3, vibration is induced and The plate portion 1A vibrates well.

  Further, the top plate portion 1A is a part of the box-shaped base body 1 having a space inside, and therefore the top plate portion 1A vibrates well even by vibrations generated by reverberation in the space of the box-shaped base body 1. .

  From the above, the present invention has a structure in which the top plate portion 1A provided with the piezoelectric element 2 is vibrated satisfactorily. Therefore, the piezoelectric element 2 is vibrated more favorably than the conventional example described above, and a larger amount of power is generated. Will be obtained.

  Specific embodiments of the present invention will be described with reference to the drawings.

  This embodiment is a vibration power generation apparatus 10 provided on a road 21 on which a vehicle 20 passes, and is a vibration power generation system S including a plurality of vibration power generation apparatuses 10.

  Specifically, the vibration power generation system S includes a plurality of vibration power generation devices 10 provided on the road 21 as shown in FIG. 1 and the vibrations generated by the vibration power generation devices 10 (piezoelectric elements 2). And a power storage unit 25 that stores power via an electric wire 24 extending from the power generation device 10 (piezoelectric element 2).

  The electricity stored in the power storage unit 25 is used as a power source for lighting, lightning signs, etc. installed beside the road 21, for example. Further, for installation on the road 21, a road with a large amount of traffic is desirable, and the amount of installation can be increased to serve as a power plant.

As shown in FIGS. 1 and 2, the vibration power generation apparatus 10 is embedded in a road 21 so that the surface portion 1 'is exposed on the road surface, and is a box-shaped substrate 1 including a top plate portion 1A, a side plate portion 1B, and a bottom plate portion 1C. It consists of

  The box-shaped substrate 1 is an elongated box-shaped body formed of an appropriate metal member (aluminum), that is, a top plate portion 1A having a rectangular shape in plan view, side plates 1B on the front and rear, left and right, and a top plate portion 1A. The plate portions 1A, 1B, 1C are connected to each other in a separable manner via fastening means (not shown).

  The box-like substrate 1 is not limited to metal, but may be made of, for example, synthetic resin or FRP, but metal is considered to be effective as a material for transmitting vibration to the piezoelectric element 2.

  The box-shaped substrate 1 has a top plate portion 1A, front and rear side plate portions 1B and bottom plate portion 1C having a plate thickness of about 5 cm, left and right side plate portions 1B having a plate thickness of about 1 cm and a length of road 21 to be installed. It is set to a length corresponding to the width (the width of one side lane in this embodiment), the width is set to about 20 cm, and the height is set to about 20 cm.

  In addition, each size of the box-shaped base | substrate 1 can be set suitably.

In addition, a large number of piezoelectric elements 2 (piezo elements) that generate electric power by vibration are provided on the back surface portion 1 ″ of the top plate portion 1A of the box-shaped substrate 1.

  The piezoelectric element 2 has a known structure, that is, a structure in which a piezoelectric material (for example, crystal or ceramic) is sandwiched between a pair of electrodes, and converts pressure caused by vibration into electric power.

  As the structure of the piezoelectric element 2, in addition to the structure described above, any structure that exhibits the characteristics of this embodiment can be adopted as appropriate.

Further, a convex portion 3 is provided on the surface portion 1 ′ of the top plate portion 1 </ b> A in the box-shaped substrate 1.

  The convex portion 3 is a ridge having a predetermined length in the length direction of the box-shaped base body 1 (the width direction of the road 21). The convex portion 3 is the width direction of the box-shaped base body 1 (the length of the road 21 to be installed). Two are arranged side by side in the vertical direction).

In this embodiment, brought into contact with the 'metal semicircular section of the rod body (stainless steel) surface portion 1 a flat surface of the (a radius of about 2 cm) the rod body' surface portion 1 of the top plate portion 1A It is arranged and configured in a state. The height of the convex portion 3 causes the top plate portion 1A and the entire box-shaped base 1 to vibrate satisfactorily when the tire 20a of the vehicle 20 passes, does not hinder driving, and imposes a burden on the tire 20a. It is a height that takes into account the balance of reduction (although such a form has already been constructed on the current road 21 to prevent drowsiness). Note that the shape, number, and height of the convex portions 3 can be appropriately changed in design.

  When the vibration power generation apparatus 10 having the above configuration is actually constructed as the vibration power generation system S described above, a plurality of vibration power generation apparatuses 10 are arranged on the left and right sides with the center line L position of the road 21 as a boundary as shown in FIG. The lanes (lanes R1 and R2 whose traveling directions are opposite to each other) are juxtaposed in the longitudinal direction of the road 21 (within a range of about 100 m) with an interval (about 30 cm). An electric wire 24 extending from the power storage unit 25 is connected.

  At this time, the box-shaped substrate 1 according to the vibration power generator 10 is embedded in a swingable manner on a road 21 on which the vehicle 20 passes.

  Specifically, as shown in FIGS. 2 and 3, the road 21 is provided with a plurality of concave portions 22 for arranging the box-shaped base 1, and the inner peripheral surface of each concave portion 22 and the outer peripheral surface of the box-shaped base 1. The box-shaped substrate 1 can swing in the recess 22 in the horizontal direction (arrow a direction in FIG. 3) and the vertical direction (arrow b direction in FIG. 3). Is provided.

  Further, a drain recess 23 is provided on the bottom surface of the recess 22.

  The drain recess 23 is composed of a recess 23a and a water collection recess 23b provided at the center of the recess 23a. The drain recess 23 allows rainwater flowing through the gap from the road surface of the road 21 to Snow water is drained.

  Of course, the road 21 where the vibration power generation system S described above is installed is preferably a place with a large amount of traffic, and the installation location is examined and selected after conducting a traffic survey.

Since the present embodiment is configured as described above, when the vehicle 20 passes through the front surface portion 1 ′ of the box-shaped substrate 1, the top plate portion 1A of the box-shaped substrate 1 vibrates, and the back surface portion 1 ″ of the top plate portion 1A. The piezoelectric element 2 provided on the surface exhibits a power generation action.

In the vibration power generator 10 according to this embodiment, a convex portion 3 is provided on the surface portion 1 ′ of the top plate portion 1A, and vibration is induced when the tire 20a of the vehicle 20 passes through the convex portion 3. As a result, the top plate portion 1A vibrates well.

  Further, the top plate portion 1A is a part of the box-shaped base body 1 having a space inside, and therefore the top plate portion 1A vibrates well even by vibrations generated by reverberation in the space of the box-shaped base body 1. .

  Therefore, according to the present embodiment, since the top plate portion 1A provided with the piezoelectric element 2 is configured to vibrate well, the piezoelectric element 2 can be vibrated more favorably than the above-described conventional example. An amount will be obtained.

  Further, in this embodiment, since the convex portion 3 is a convex strip having a predetermined length in the width direction of the road 21, it is possible to more reliably obtain vibration caused by stepping on the tire 20 a of the vehicle 20 passing on the road 21. become.

  Further, in this embodiment, the box-shaped base body 1 is swingably embedded in the road 21 through which the vehicle 20 passes, so that the top plate portion 1A can be further vibrated.

  Further, in this embodiment, the road 21 is provided with a recess 22 for arranging the box-shaped base 1, and a gap is provided between the inner peripheral surface of the recess 22 and the outer peripheral surface of the box-shaped base 1, so that A state is obtained in which the box-shaped substrate 1 can swing within the recess 22.

  In addition, the present embodiment has a structure in which the vibration power generation device 10 is disposed in each of the opposite lanes of the road 21, so that efficient power generation, that is, continuous power generation is possible.

  In this embodiment, since the drainage recess 23 is provided on the bottom surface of the recess 22, for example, rainwater flowing from the road 21 is drained, and the box-shaped substrate 1 always swings well. Will be obtained.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Box-shaped base | substrate 1 ' surface part 1 " back part 1A Top plate part 1B Side plate part 1C Bottom plate part 2 Piezoelectric element 3 Convex part
10 Vibration generator
20 vehicles
21 road
22 recess
23 Drainage recess

Claims (2)

A vibration power generation system including a vibration power generation device on a road on which a vehicle passes, the vibration power generation device including a box-shaped base including a top plate, a side plate, and a bottom plate, and the top plate of the box-shaped base A piezoelectric element that generates power by vibration is provided on the back surface of the part, and a convex part having a predetermined length in the width direction of the road is provided on the surface part of the top plate part. A plurality of juxtapositions are provided in the length direction of the road, and the road is provided with a recess for arranging the box-shaped base so that the surface of the box-shaped base is exposed on the road surface. A gap is provided between the peripheral surface and the outer peripheral surface of the box-shaped base, the box-shaped base is provided swingably in the concave portion, and a drain concave portion is provided on the bottom surface of the concave portion. A vibration power generation system characterized by 2. The vibration power generation system according to claim 1, wherein the box-shaped base is made of aluminum.

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