CN205444795U - Electricity generation floor based on arch piezoelectric structure - Google Patents

Abstract

The utility model discloses a power generation floor based on an arched piezoelectric structure, which comprises two parts: a bottom plate and a cover plate. A number of beams and composite piezoelectric sheet units are arranged on the bottom plate; the composite piezoelectric sheet unit is composed of a spring steel sheet and a piezoelectric sheet, and the piezoelectric sheet is symmetrically bonded to the upper and lower sides of the spring steel sheet, and the spring steel sheet and the piezoelectric sheet are composed of Arched structure; the spring steel sheet is connected to the beam through the movable support; the bottom surface of the cover plate is provided with several protrusions at intervals to contact the apex of the piezoelectric sheet, and the bottom plate and the cover plate are sealed by rubber. The power generation floor is placed under the road surface. The arched structure composed of piezoelectric sheets and spring steel sheets has good space performance, which greatly reduces the thickness of the power generation floor. At the same time, the arched structure is used to disperse and transmit the force, improving The load-bearing performance of the piezoelectric sheet can not only bear the weight of pedestrians, but also bear the weight of vehicles, so that the power generation floor can better adapt to different application environments, broaden its application fields, and have a long service life.

Description

A power generation floor based on an arched piezoelectric structure

technical field

The utility model relates to the technical field of pressure power generation, in particular to a power generation floor based on an arched piezoelectric structure.

Background technique

With the increasing shortage of energy and the increasing awareness of environmental protection, the problem of how to save energy and protect the environment has become increasingly prominent. The development and utilization of clean, environmentally friendly and non-polluting energy has attracted the attention and attention of countries all over the world. Under the action of external force, the phenomenon that the surface of the piezoelectric material generates charges is called the piezoelectric effect. The piezoelectric power generation device using the piezoelectric effect has the advantages of environmental protection, energy saving, simple structure, no electromagnetic interference, easy implementation, and low cost. It has attracted more and more attention from researchers from all over the world.

Chinese utility model patent CN203602981U is based on a piezoelectric material power generation floor. The piezoelectric sheet used in the power generation floor will undergo plastic deformation after repeated use, and the piezoelectric effect will decrease. And the design load of the device is generally a single human body. If there is a vehicle or other loads, deformation beyond the design range will occur, and the piezoelectric material will be damaged. Therefore, it is very meaningful to design a power generation floor that can be durable and meet various load conditions.

Contents of the invention

The purpose of this utility model is to address the deficiencies of the prior art and provide a power generation floor based on an arched piezoelectric structure. The power generation floor is installed under the road surface, and its composite structure of piezoelectric sheets and spring steel sheets can withstand Larger loads can not only collect the mechanical energy generated during people's stepping and walking, but also convert the mechanical energy of the vehicle into electrical energy.

The technical scheme that realizes the utility model purpose is:

A power generation floor based on an arched piezoelectric structure is composed of a bottom plate and a cover plate. A number of beams and composite piezoelectric sheet units are arranged on the bottom plate; the composite piezoelectric sheet unit is composed of a spring steel sheet and a piezoelectric sheet, and the spring steel sheet is connected with the beam in the form of a sliding support; several protrusions are arranged at intervals on the bottom surface of the cover plate It is in contact with the apex of the piezoelectric sheet, and the surroundings of the bottom plate and the cover plate are sealed by rubber.

The bottom plate includes a crossbeam and a composite piezoelectric sheet unit. The crossbeam is installed on the upper surface of the bottom plate, two are arranged on both sides of the bottom plate, and three are arranged in the middle of the bottom plate. The bottom plate is divided into 4 areas, and several composite piezoelectric sheets are installed in the 4 areas sheet unit; the composite piezoelectric sheet unit is composed of a spring steel sheet and a piezoelectric sheet, the piezoelectric sheet is symmetrically bonded to the upper and lower sides of the spring steel sheet, and the spring steel sheet and the piezoelectric sheet form an arched structure; the spring steel sheet passes through the movable support Connect with beam.

The bottom surface of the cover plate is provided with protrusions at equal intervals, and the protrusions are in contact with the apex of the piezoelectric sheet on the upper surface of the base plate. slice unit.

The surroundings of the bottom plate and the cover plate are sealed by rubber, and the rubber acts as a spring. When the cover plate is loaded, the force deforms the rubber, driving the protrusion on the bottom surface of the cover plate to press the piezoelectric sheet downward to generate electricity. At the same time, the rubber can buffer the impact of pedestrians and vehicles stepping on it, and protect the piezoelectric sheet.

The piezoelectric sheet is formed by bonding a metal substrate and a piezoelectric material. The shape of the metal substrate is rectangular. The piezoelectric material is made of piezoelectric ceramics or composite piezoelectric materials, and its shape is rectangular. The piezoelectric sheet is the core component of the power generation floor. , to convert mechanical energy into electrical energy.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. The utility model has a novel structure. The piezoelectric sheet and the spring steel sheet form an arched structure, which disperses and transmits the force, has a strong pressure bearing capacity, and has better rigidity, so that the power generation device can better adapt to different application environments and broaden the scope of application. Its application field has long service life.

2. The utility model converts mechanical energy into electrical energy by using the piezoelectric effect of piezoelectric materials, which is green and environmentally friendly, and the overall structure is simple, easy to use, and the number of piezoelectric sheets displayed in a single area is large, making full use of the internal structure of the power generation device space, high power generation efficiency and large power generation.

3. The utility model uses rubber and spring steel sheets to control the deformation of the piezoelectric sheet to meet the maximum deformation requirement of the piezoelectric sheet.

4. The utility model utilizes the good space performance of the arched structure to reduce the thick bottom of the power generation floor.

5. The utility model can be completely sealed, which solves the waterproof problem of the power generation device installed under the road surface.

Description of drawings

Fig. 1: is the overall structure schematic diagram of the present utility model.

Fig. 2: is the schematic diagram of the base plate structure of the present utility model.

Fig. 3: It is a structural schematic diagram of the cover plate of the present invention.

Figure 4: Schematic diagram of the structure of the composite piezoelectric sheet unit of the present invention.

Fig. 5: It is a structural schematic diagram of the piezoelectric sheet of the present invention.

Explanation of symbols in the figure: 1. Bottom plate, 2. Cover plate, 3. Beam, 4. Composite piezoelectric sheet unit, 5. Protrusion, 6. Piezoelectric sheet, 6-1. Metal substrate, 6-2. Piezoelectric Ceramic, 7. Spring steel sheet, 8. Rubber.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Figures 1 to 5, a power generation floor based on an arched piezoelectric structure includes two parts: a base plate 1 and a cover plate 2; The upper surface of the upper surface is provided with beams 3 and several composite piezoelectric sheet units 4, five beams 3 are installed on the upper surface of the bottom plate 1, two are arranged on both sides of the bottom plate 1, and three are arranged in the middle of the bottom plate 1, and the bottom plate 1 is divided into There are 4 areas, which are arranged at equal intervals in these 4 areas, and 9 composite piezoelectric sheet units 4 are installed between every two beams 3, and a total of 36 composite piezoelectric sheet units 4 are installed above the bottom plate 1. The sheet unit 4 is connected with the crossbeam 3 in the form of a movable support; the material of the cover plate 2 is polypropylene, the length is 600 mm, the width is 600 mm, and the height is 10 mm. The height is 50mm, the width is 15mm, and the height is 5mm. The protrusion 5 is in contact with the apex of the piezoelectric sheet 6. The protrusion 5 acts as a force transmission body and transmits the load on the surface of the cover plate 2 to the composite piezoelectric sheet unit 4. The surroundings of the base plate 1 and the cover plate 2 are sealed by rubber 8, and the rubber 8 not only has a sealing effect, but also acts as a spring, which can buffer the load of pedestrians and vehicles and protect the piezoelectric sheet.

The composite generating sheet 4 is formed by bonding the spring steel sheet 7 and the piezoelectric sheet 6, and the piezoelectric sheet 6 is symmetrically bonded on the upper and lower sides of the spring steel sheet 7, and the piezoelectric sheet 6 and the spring steel sheet 7 form an arched structure. On the one hand, the good space performance of the arched structure is used to greatly reduce the thickness of the power generation floor. At the same time, the arched structure is used to disperse and transmit the force, which improves the load-bearing efficiency of the piezoelectric sheet, which can not only bear the weight of pedestrians, but also bear the weight of vehicles. The weight of the power generation device can better adapt to different application environments, broaden its application field, and have a long service life.

The piezoelectric sheet 6 is composed of a metal substrate 6-1 and a piezoelectric ceramic 6-2. The metal substrate 6-1 has a length of 73 mm, a width of 38 mm, and a thickness of 0.4 mm. The piezoelectric ceramic 6-2 has a length of 50 mm and a width of It is 35mm and the thickness is 0.2mm. The piezoelectric sheet is the core component of the power generation floor, which plays the role of converting mechanical energy into electrical energy.

Its working process is: place the utility model under the road surface, the cover plate 2 moves downward under the load of the human body and the vehicle and compresses the rubber 8, and the protrusion 5 arranged on the bottom surface of the cover plate 2 is thus pressed downward The composite piezoelectric sheet unit 4, the composite piezoelectric sheet unit 4 is deformed after being squeezed by the protrusion 5, and the piezoelectric sheet 6 bonded to its upper and lower sides is also deformed to generate electricity; when the human body and the vehicle load disappear, The rubber 8 returns to its original shape due to the elastic effect, and drives the cover plate 2 and the protrusion 5 on the bottom surface to move upward. At this time, the composite piezoelectric sheet unit 4 is no longer squeezed by the protrusion 5, and the spring steel sheet 7 restores the bridge arch shape due to elasticity. Once again, the deformation of the piezoelectric sheet 6 bonded to its upper and lower sides generates electricity.

Claims (4)

1. A power generation floor based on an arched piezoelectric structure, characterized in that: a kind of power generation floor based on an arched piezoelectric structure is composed of a base plate and a cover plate; Electric sheet unit; composite piezoelectric sheet unit is composed of spring steel sheet and piezoelectric sheet. The periphery of the cover plate is sealed by rubber. 2. The power generation floor according to claim 1, characterized in that: the bottom plate includes a beam and a composite piezoelectric sheet unit, the beam is installed on the upper surface of the bottom plate, two are arranged on both sides of the bottom plate, three are arranged in the middle of the bottom plate, and the The bottom plate is divided into 4 areas, and several composite piezoelectric sheet units are installed in the 4 areas; the composite piezoelectric sheet unit is composed of a spring steel sheet and a piezoelectric sheet, and the piezoelectric sheet is symmetrically bonded to the upper and lower sides of the spring steel sheet, and the spring steel sheet It forms an arched structure with the piezoelectric sheet, and the spring steel sheet is connected with the beam through a movable support. 3. The power generation floor according to claim 1, characterized in that: the bottom surface of the cover plate is provided with equally spaced protrusions, the protrusions are in contact with the apex of the piezoelectric sheet on the upper surface of the base plate, and the protrusions act as force transmission bodies The role of the load on the surface of the cover plate is transmitted to the composite piezoelectric sheet unit. 4. The power generation floor according to claim 1, characterized in that: the bottom plate and the cover plate are sealed around by rubber, and the rubber acts as a spring. When the cover plate is loaded, the force deforms the rubber and drives the cover plate The protrusions on the bottom press the piezoelectric sheet downward to generate electricity; at the same time, the rubber can buffer the impact of pedestrians and vehicles to protect the piezoelectric sheet.