Energy recovery device based on sealed air cylinder and piezoelectric ceramics

Abstract

The utility model discloses an energy recovery device based on a sealed air cylinder and piezoelectric ceramics, which comprises the sealed air cylinder, a thin film, a piezoelectric ceramic element, a buffer block and an energy collection circuit, and is characterized in that the thin film and the piezoelectric ceramic element are fixed in the air cylinder; the piezoelectric ceramic element is fixed at a position aligned with an impact surface of the film, the buffer block is fixed between the film and the piezoelectric ceramic element, and the energy collection circuit is electrically connected with the piezoelectric ceramic element and is used for collecting electric energy generated by the piezoelectric ceramic element. The piezoelectric ceramic energy recovery device can recover energy from gas pressure through the combination of the sealed cylinder, the film and the piezoelectric ceramic, realizes efficient conversion from mechanical energy to electric energy, does not need an external power supply, not only improves energy conversion efficiency, but also widens the application range of the piezoelectric ceramic energy recovery device, and is simple in structure, easy to manufacture and maintain, good in durability and low in cost. The method is suitable for large-scale production.

Description

Technical Field

[0001] The utility model relates to the technical field of energy conversion and recovery, in particular to an energy recovery device based on a sealed cylinder and piezoelectric ceramics. Background Art

[0002] With the intensifying global energy crisis and rising environmental awareness, energy recovery technology has become a research hotspot. Existing energy recovery technologies primarily include mechanical energy recovery, thermal energy recovery, and electrical energy recovery. Mechanical energy recovery technologies typically rely on complex mechanical structures, such as turbines and flywheels, which are not only costly but also difficult to maintain. Furthermore, some energy recovery technologies require an external power source, which is impractical in some situations.

[0003] Piezoelectric ceramics, materials that convert mechanical energy into electrical energy, have broad application prospects in the field of energy recovery due to their high conversion efficiency and fast response speed. However, existing piezoelectric ceramic energy recovery devices are often complex in structure, high in cost, lack durability, and have limited energy recovery efficiency in highly dynamic environments, hindering their widespread adoption in practical applications. Utility Model Content

[0004] The purpose of the utility model is to provide an energy recovery device based on a sealed cylinder and piezoelectric ceramics, so as to solve the problems of insufficient durability of the piezoelectric energy recovery device in the prior art and limited energy recovery efficiency in a high dynamic environment.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The utility model provides an energy recovery device based on a sealed cylinder and piezoelectric ceramics, comprising a sealed cylinder, a film, a piezoelectric ceramic element, a buffer block and an energy collection circuit. The film and the piezoelectric ceramic element are fixed inside the cylinder, the piezoelectric ceramic element is fixed at a position aligned with the impact surface of the film, the buffer block is fixed between the film and the piezoelectric ceramic element, and the energy collection circuit is electrically connected to the piezoelectric ceramic element for collecting the electrical energy generated by the piezoelectric ceramic element.

[0007] Furthermore, the cylinder is provided with an air inlet, and an air cushion is installed at the air inlet.

[0008] Furthermore, the film is made of elastic material.

[0009] Furthermore, the buffer block is a rubber buffer block.

[0010] Furthermore, the centers of gravity of the piezoelectric ceramic element, the buffer block and the film are on the same axis.

[0011] Furthermore, an overhead portion is provided at a position on the inner wall of the cylinder corresponding to the piezoelectric ceramic element to facilitate deformation of the piezoelectric ceramic element under stress.

[0012] Furthermore, the distance between the bottom wall of the overhead portion and the undeformed piezoelectric ceramic element is 3 mm.

[0013] Furthermore, the energy collection circuit includes a rectifier and an energy storage element, the input end of the rectifier is connected to the output end of the piezoelectric ceramic element, and the output end of the rectifier is connected to the input end of the energy storage element.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] The energy recovery device based on a sealed cylinder and piezoelectric ceramics of the utility model can recover energy from gas pressure through the combination of a sealed cylinder, a thin film and piezoelectric ceramics, thereby realizing efficient conversion of mechanical energy into electrical energy without the need for an external power supply. This not only improves the energy conversion efficiency, but also broadens the application scope of the piezoelectric ceramic energy recovery device, and has significant environmental friendliness and economic benefits. It has a simple structure, is easy to manufacture and maintain, reduces costs, has good durability, reduces mechanical wear, extends the service life of the device, and is suitable for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic cross-sectional view of the energy recovery device based on a sealed cylinder and piezoelectric ceramics according to the present invention;

[0018] Figure 2 This is a schematic cross-sectional structural diagram of the energy recovery device based on the sealed cylinder and piezoelectric ceramics of the present invention when subjected to force.

[0019] Explanation of the accompanying symbols: 1. Cylinder; 2. Piezoelectric ceramic element; 3. Film; 4. Buffer block; 5. Air inlet; 6. Overhead part. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] In the description of this utility model, it should be understood that the terms "length," "width," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this utility model. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "plurality" means two or more, unless otherwise expressly specified.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] Example 1

[0024] like Figure 1 、 Figure 2 As shown, the energy recovery device based on a sealed cylinder and piezoelectric ceramics of this embodiment 1 includes a sealed cylinder 1, a film 3, a piezoelectric ceramic element 2, a buffer block 4 and an energy collection circuit, wherein the cylinder 1 is used to contain a certain amount of gas to ensure stable operation of the device under various gas pressure environments; the film 3 and the piezoelectric ceramic element 2 are fixed inside the cylinder 1, wherein the film 3 is made of elastic material and can be deformed, and the film 3 can move and impact the piezoelectric ceramic element 2 under the action of gas pressure, and the piezoelectric ceramic element 2 is fixed in a position aligned with the impact surface of the film 3, and the piezoelectric ceramic element 2 generates electrical energy when impacted; the buffer block 4 is fixed between the film 3 and the piezoelectric ceramic element 2, specifically, the buffer block 4 is a rubber buffer block, and the piezoelectric ceramic element 2 is mounted on the impact surface of the film 3 through the buffer block 4; the energy collection circuit is electrically connected to the piezoelectric ceramic element 2 for collecting the electrical energy generated by the piezoelectric ceramic element 2.

[0025] When the energy recovery device based on the sealed cylinder and piezoelectric ceramics of this embodiment 1 is in use, when external gas is pressed into the cylinder 1, the internal air pressure of the cylinder 1 increases accordingly, thereby pushing the film 3 to impact the piezoelectric ceramic element 2. The piezoelectric ceramic element 2 generates an electric charge under the action of the impact force of the film 3, thereby realizing the conversion of mechanical energy into electrical energy and effectively recovering energy.

[0026] Furthermore, an air inlet 5 is provided at the bottom of the cylinder 1, and an air cushion is installed at the air inlet 5. When the device undergoes mechanical movement, the air cushion is squeezed, and the gas is pressed into the cylinder 1, increasing the pressure inside the cylinder 1. Preferably, one air cushion can be connected to multiple cylinders 1 to improve energy utilization efficiency.

[0027] At this time, when external gas is pressed into the cylinder 1 through the air inlet 5, the air pressure inside the cylinder 1 increases, pushing the film 3 to deform and driving the buffer block 4 to impact the piezoelectric ceramic element 2. The piezoelectric ceramic element 2 generates electrical energy when it is impacted, and the electrical energy is collected by the energy collection circuit for subsequent use.

[0028] Preferably, the centers of gravity of the piezoelectric ceramic element 2 , the buffer block 4 and the film 3 are on the same axis.

[0029] Example 2

[0030] Based on Example 1, this Example 2 further illustrates the installation method of the film 3 and the piezoelectric ceramic element 2 .

[0031] The difference between Example 2 and Example 1 is that the film 3 is fixed to the inner wall of the cylinder 1 by an appropriate fixing structure, ensuring that the film 3 can move freely under the action of gas pressure and effectively impact the piezoelectric ceramic element 2.

[0032] An overhead portion 6 is provided at a position on the inner wall of the cylinder 1 corresponding to the piezoelectric ceramic element 2 to facilitate deformation of the piezoelectric ceramic element 2 under stress.

[0033] In addition, the distance between the bottom wall of the overhead portion 6 and the undeformed piezoelectric ceramic element 2 is 3 mm, that is, an overhead portion 6 of about 3 mm is provided above the piezoelectric ceramic element 2 to ensure that the piezoelectric ceramic element 2 is fully deformed while protecting the piezoelectric ceramic element 2 from damage due to excessive deformation.

[0034] Example 3

[0035] Based on Examples 1 and 2, this Example 3 further illustrates the configuration of the energy harvesting circuit.

[0036] This embodiment 3 differs from embodiments 1 and 2 in that the energy harvesting circuit includes a rectifier and an energy storage element. The rectifier's input is connected to the output of piezoelectric ceramic element 2, and the rectifier's output is connected to the input of the energy storage element, ensuring efficient energy collection and storage. The rectifier converts the alternating current generated by piezoelectric ceramic element 2 into direct current, which is then stored in the energy storage element for subsequent use.

[0037] Specifically, the energy storage element is a capacitor or a battery, which is used to store electrical energy so as to provide power when needed.

[0038] When the energy recovery device based on the sealed cylinder and piezoelectric ceramics of this embodiment 3 is in use, when external gas is pressed into the cylinder 1 through the air inlet 5, the air pressure inside the cylinder increases, pushing the film 3 to deform and driving the buffer block 4 to impact the piezoelectric ceramic element 2. The piezoelectric ceramic element 2 generates electrical energy when it is impacted. The electrical energy is collected by the energy collection circuit and converted into direct current by the rectifier, and stored in the energy storage device for subsequent use.

[0039] The energy recovery device based on a sealed cylinder and piezoelectric ceramics of the utility model can recover energy from gas pressure through the combination of a sealed cylinder, a thin film and piezoelectric ceramics, thereby realizing efficient conversion of mechanical energy into electrical energy. It does not require an external power supply and effectively improves energy conversion efficiency. It has a simple structure, is easy to manufacture and maintain, reduces costs, has good durability, reduces mechanical wear, extends the service life of the device, and is suitable for large-scale production.

[0040] The energy recovery device based on a sealed cylinder and piezoelectric ceramics of the utility model is suitable for energy recovery in various gas pressure environments, has significant environmental friendliness and economic benefits, and is suitable for various application scenarios such as sports equipment, transportation vehicles, and industrial equipment.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An energy recovery device based on a sealed cylinder and piezoelectric ceramics, characterized in that: The device comprises a sealed cylinder, a film, a piezoelectric ceramic element, a buffer block and an energy collection circuit. The film and the piezoelectric ceramic element are fixed inside the cylinder, the piezoelectric ceramic element is fixed in a position aligned with the impact surface of the film, the buffer block is fixed between the film and the piezoelectric ceramic element, and the energy collection circuit is electrically connected to the piezoelectric ceramic element for collecting the electrical energy generated by the piezoelectric ceramic element.

2. The energy recovery device based on a sealed cylinder and piezoelectric ceramics according to claim 1, characterized in that: The cylinder is provided with an air inlet, and an air cushion is installed at the air inlet.

3. The energy recovery device based on a sealed cylinder and piezoelectric ceramics according to claim 1, characterized in that: The film is made of elastic material.

4. The energy recovery device based on a sealed cylinder and piezoelectric ceramics according to claim 1, characterized in that: The buffer block is a rubber buffer block.

5. The energy recovery device based on a sealed cylinder and piezoelectric ceramics according to claim 1, characterized in that: The centers of gravity of the piezoelectric ceramic element, the buffer block and the film are on the same axis.

6. The energy recovery device based on a sealed cylinder and piezoelectric ceramics according to claim 1, characterized in that: An overhead portion is provided at a position on the inner wall of the cylinder corresponding to the piezoelectric ceramic element, so as to facilitate the deformation of the piezoelectric ceramic element under stress.

7. The energy recovery device based on a sealed cylinder and piezoelectric ceramics according to claim 6, characterized in that: The distance between the bottom wall of the overhead portion and the undeformed piezoelectric ceramic element is 3 mm.

8. An energy recovery device based on a sealed cylinder and piezoelectric ceramics according to any one of claims 1 to 7, characterized in that: The energy collection circuit includes a rectifier and an energy storage element. The input end of the rectifier is connected to the output end of the piezoelectric ceramic element, and the output end of the rectifier is connected to the input end of the energy storage element.

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