A vibration energy collection device

Abstract

The present invention discloses a vibration energy collection device, comprising a base and a vertically arranged bracket; a power generation mechanism, comprising an electromagnetic induction module, a piezoelectric power generation module and an elastic component, the electromagnetic induction module comprising a magnetic component and an induction component, the induction component surrounding the magnetic component, the piezoelectric power generation module comprising a piezoelectric plate and an extrusion component, the extrusion component comprising a supporting end and an active end opposite to the supporting end, and the piezoelectric plate being arranged at the supporting end; the elastic component comprising a first elastic component and a second elastic component, the first elastic component being connected to the extrusion component and the magnetic component, and the second elastic component being connected to the base and the magnetic component; the power collection module being connected to the power generation mechanism; this vibration energy collection device senses vibration and squeezes the first elastic component and the second elastic component through the magnetic component, so that the extrusion component and the piezoelectric plate generate a piezoelectric effect, and the magnetic component and the induction component generate electromagnetic induction, thereby absorbing vibration energy and converting it into electrical energy, with high conversion rate, safety, wide application range and strong practicality.

Description

Technical Field

[0001] The present invention relates to the field of instrument science and engineering, and in particular to a vibration energy collection device. Background Art

[0002] Wireless sensor network technology is a distributed sensor network. The system's endpoints consist of countless sensors that sense and monitor the outside world. These sensors communicate wirelessly with each other to form a network system, enabling collaborative sensing, collection, and processing of environmental parameters within the network's coverage area. Monitoring various device or environmental parameters, such as temperature, pressure, stress, and humidity, requires a large number of sensor nodes, each of which requires a certain amount of power.

[0003] Currently, most sensor nodes are powered by chemical batteries, but the conflict between node lifespan and the limited battery capacity is becoming increasingly severe. On the one hand, sensor nodes are often small, making large-capacity batteries unsuitable, which limits their service life. On the other hand, frequent battery replacements create a significant workload for network maintenance, indirectly increasing deployment costs. This is especially true for monitoring networks deployed in harsh and difficult environments, where each maintenance effort requires significant manpower and financial resources. In some cases, battery replacement or charging may be impossible due to remote locations or difficulties in performing secondary maintenance. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a vibration energy collection device that can convert vibration energy in the environment into electrical energy, has a wide range of applications and is highly practical.

[0005] According to a first aspect of the present invention, a vibration energy collection device is provided, comprising a base; a bracket vertically arranged on the base; a first power generation mechanism, comprising a first electromagnetic induction module, a first piezoelectric power generation module and an elastic component, the first electromagnetic induction module comprising a first magnetic component and a first induction component, the first induction component being arranged around the first magnetic component, the first piezoelectric power generation module comprising a piezoelectric plate and an extrusion component, the extrusion component being arranged on the bracket, the extrusion component comprising an active end and a supporting end, the piezoelectric plate being arranged on the supporting end, and the active end being arranged opposite to the supporting end; the elastic component comprising a first elastic component and a second elastic component, one end of the first elastic component being connected to the extrusion component, the other end of the first elastic component being connected to the upper end of the first magnetic component, one end of the second elastic component being arranged on the base, the other end of the second elastic component being connected to the lower end of the first magnetic component, the first magnetic component moving up and down drives the first elastic component to deform, and the first elastic component drives the active end to intermittently contact the piezoelectric plate; an electric power collection module, connected to the first power generation mechanism.

[0006] Beneficial effects: This vibration energy collection device senses the external vibration environment through the first magnetic component, and the first magnetic component moves up and down to squeeze the first elastic component and the second elastic component, wherein the second elastic component enables the first magnetic component to continuously move in the first sensing component and generate an electromagnetic induction output current, and the first elastic component enables the squeezing component 20 to intermittently contact the piezoelectric plate and generate a piezoelectric effect output current. The two different energy collection methods are integrated into one, and can convert the vibration energy in the environment into electrical energy. The electromechanical conversion efficiency is high, it is safe and pollution-free, and it can work in uninhabited areas or harsh environments in the wild. It has a wide range of applications and strong practicality.

[0007] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, the extrusion component includes four connecting rods, which are connected end to end and hinged to form a closed frame. The hinge at the upper end of the closed frame is suspended on the bracket, and the hinge at the lower end of the closed frame is connected to the first elastic component. The supporting end and the action end are respectively arranged at the hinges on both sides of the closed frame, and the first elastic component drives the two sides of the closed frame to be relatively close or relatively far away.

[0008] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, the supporting end is arranged at the left end of the closed frame, and the active end is arranged at the right end of the closed frame, and both the supporting end and the active end are rod-shaped structures.

[0009] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, the piezoelectric plate is arranged vertically, and the supporting end and the action end are arranged horizontally.

[0010] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, the first magnetic component is a bar magnet, the first induction component includes an inductor coil and two columns supporting the inductor coil, the two columns are arranged on the base, and the second elastic component is arranged between the two columns.

[0011] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, the piezoelectric plate includes a substrate and a piezoelectric sheet adhered to the substrate, and the piezoelectric sheet is located on the side of the substrate close to the active end.

[0012] According to the vibration energy harvesting device described in the embodiment of the first aspect of the present invention, the substrate is a steel plate, and the piezoelectric piece is a piezoelectric ceramic piece.

[0013] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, a second power generation mechanism and a third power generation mechanism are also provided on the bracket, and the power collection module is also connected to the second power generation mechanism and the third power generation mechanism. The first power generation mechanism, the second power generation mechanism and the third power generation mechanism are arranged in sequence, and the structures of the first power generation mechanism, the second power generation mechanism and the third power generation mechanism are the same.

[0014] According to the vibration energy collection device described in the embodiment of the first aspect of the present invention, the second power generation mechanism includes a second magnetic component, the third power generation mechanism includes a third magnetic component, and the masses of the first magnetic component, the second magnetic component, and the third magnetic component increase in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described only illustrate some embodiments of the present invention, not all of them. Those skilled in the art can derive other design solutions and drawings based on these drawings without inventive effort.

[0016] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0017] Figure 2 Schematic diagram of an explosion of the first piezoelectric power generation module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Reference Figures 1 and 2, a vibration energy collection device, including a base 10, wherein the base 10 is rigidly connected to the external vibration environment; a bracket 11, vertically arranged on the base 10, the bracket 11 includes two vertical tubes and a horizontal tube arranged between the two vertical tubes; a first power generation mechanism, including a first electromagnetic induction module, a first piezoelectric power generation module and an elastic component, the first electromagnetic induction module includes a first magnetic component 31 and a first induction component 32, the first induction component 32 is arranged around the first magnetic component 31, the first piezoelectric power generation module includes a piezoelectric plate 23 and an extrusion component 20, the extrusion component 20 is arranged on the bracket 11, the extrusion component 20 includes an action end 22 and a support end 21, the piezoelectric plate 23 is arranged on the support end 21, and preferably, the piezoelectric plate 23 is fixedly arranged At the end of the supporting end 21, the acting end 22 is arranged opposite to the supporting end 21; the elastic component includes a first elastic component 41 and a second elastic component 42, one end of the first elastic component 41 is connected to the extrusion component 20, and the other end of the first elastic component 41 is connected to the upper end of the first magnetic component 31, one end of the second elastic component 42 is set on the base 10, and the other end of the second elastic component 42 is connected to the lower end of the first magnetic component 31, the first magnetic component 31 moves up and down to drive the first elastic component 41 to deform, and the first elastic component 41 drives the acting end 22 to intermittently contact the piezoelectric plate 23; the power collection module is connected to the first power generation mechanism, and specifically, the piezoelectric plate 23 and the first induction component 32 can be connected respectively through different wires to obtain current. This vibration energy collection device senses the external vibration environment through the first magnetic component 31. The first magnetic component 31 moves up and down to squeeze the first elastic component 41 and the second elastic component 42. The second elastic component 42 enables the first magnetic component 31 to continuously move in the first sensing component 32 and generate an electromagnetic induction output current. The first elastic component 41 enables the active end 22 of the squeezing component 20 to intermittently contact the piezoelectric plate 23 and generate a piezoelectric effect output current. The two different energy collection methods are integrated into one, and can convert vibration energy in the environment into electrical energy. The electromechanical conversion efficiency is high, it is safe and pollution-free, and it can work in uninhabited areas or harsh environments in the wild. It has a wide range of applications and strong practicality.

[0023] In this embodiment, the extrusion component 20 includes four connecting rods, which are connected end to end to form a closed frame, wherein the connection method is a hinged method. The closed frame is a diamond truss, and the hinge at the upper end of the closed frame is suspended on the bracket 11. The hinge at the lower end of the closed frame is connected to the first elastic component 41. The support end 21 and the action end 22 are respectively fixed at the hinges on both sides of the closed frame. The first elastic component 41 drives the two sides of the closed frame to move relatively closer or farther away. The relative approach or distance between the two sides of the closed frame drives the support end 21 and the action end 22 to move relatively closer or farther away. Specifically, the frame size of the closed frame is 50*10*1mm, and the size of the support end 21 and the action end 22 is 25*10*1mm. They are all made of 45 steel.

[0024] Preferably, the support end 21 is disposed at the left end of the closed frame, and the active end 22 is disposed at the right end of the closed frame. Both the support end 21 and the active end 22 are rod-shaped structures. The piezoelectric plate 23 is disposed vertically, and the support end 21 and the active end 22 are disposed horizontally. The plane on which the piezoelectric plate 23 is located is perpendicular to the plane on which the closed frame is located.

[0025] In this embodiment, the first magnetic component 31 is a bar magnet, and the first inductive component 32 includes an inductor 321 and two pillars 322 supporting the inductor 321. The two pillars 322 are mounted on the base 10, and the second elastic component 42 is disposed between the two pillars 322. The inner diameter of the inductor 321 is 30 mm, and the cross-sectional dimensions of the bar magnet are 15*15 mm, ensuring that the bar magnet can vibrate freely within the inductor 321.

[0026] In this embodiment, the piezoelectric plate 23 includes a substrate 231 and a piezoelectric sheet 232 attached to the substrate 231. The piezoelectric sheet 232 is located on the side of the substrate 231 near the active end 22. Preferably, the substrate 231 is a steel plate made of 45-gauge steel with dimensions of 40*30*1 mm to ensure that the substrate 231 has sufficient rigidity to prevent deformation due to compression. The piezoelectric sheet 232 is a piezoelectric ceramic sheet, specifically PZT (lead zirconate titanate) piezoelectric ceramic.

[0027] In this embodiment, a second power generation mechanism 50 and a third power generation mechanism 60 are also provided on the bracket 11, and the power collection module is also connected to the second power generation mechanism 50 and the third power generation mechanism 60. The first power generation mechanism, the second power generation mechanism 50 and the third power generation mechanism 60 are arranged in sequence, and the structures of the first power generation mechanism, the second power generation mechanism 50 and the third power generation mechanism 60 are the same.

[0028] In this embodiment, the second power generation mechanism 50 includes a second magnetic component 51, and the third power generation mechanism 60 includes a third magnetic component 61. The masses of the first magnetic component 31, the second magnetic component 51, and the third magnetic component 61 increase in order: 15g, 25g, and 35g, respectively. The different masses of the first magnetic component 31, the second magnetic component 51, and the third magnetic component 61 have different resonant frequencies, effectively broadening the frequency range of energy collection and ensuring energy collection efficiency.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A vibration energy collection device, characterized in that: include: base; a bracket, vertically arranged on the base; A first power generation mechanism includes a first electromagnetic induction module, a first piezoelectric power generation module and an elastic component; The first electromagnetic induction module includes a first magnetic component and a first induction component, and the first induction component is arranged around the first magnetic component; The first piezoelectric power generation module includes a piezoelectric plate and an extrusion component, the extrusion component is arranged on the bracket, the extrusion component includes an active end and a supporting end, the piezoelectric plate is arranged on the supporting end, and the active end is arranged opposite to the supporting end; The elastic component includes a first elastic component and a second elastic component, one end of the first elastic component is connected to the extrusion component, the other end of the first elastic component is connected to the upper end of the first magnetic component, one end of the second elastic component is disposed on the base, and the other end of the second elastic component is connected to the lower end of the first magnetic component, the first magnetic component moves up and down to drive the first elastic component to deform, and the first elastic component drives the active end to intermittently contact the piezoelectric plate; an electric power collection module connected to the first power generation mechanism and connected to the piezoelectric plate and the first induction component via different wires to obtain current; The extrusion component includes four connecting rods, which are connected end to end and hinged to form a closed frame. The hinge at the upper end of the closed frame is suspended on the bracket, and the hinge at the lower end of the closed frame is connected to the first elastic component. The supporting end and the active end are respectively arranged at the hinges on both sides of the closed frame. The first elastic component drives the two sides of the closed frame to be relatively close or relatively far away.

2. The vibration energy harvesting device according to claim 1, wherein: The supporting end is arranged at the left end of the closed frame, and the active end is arranged at the right end of the closed frame. Both the supporting end and the active end are rod-shaped structures.

3. The vibration energy harvesting device according to claim 2, wherein: The piezoelectric plate is arranged vertically, and the supporting end and the active end are arranged horizontally.

4. The vibration energy harvesting device according to claim 1, wherein: The first magnetic component is a bar magnet, the first induction component includes an inductor coil and two columns supporting the inductor coil, the two columns are arranged on the base, and the second elastic component is arranged between the two columns.

5. The vibration energy harvesting device according to claim 1, wherein: The piezoelectric plate includes a substrate and a piezoelectric sheet adhered to the substrate. The piezoelectric sheet is located on a side of the substrate close to an active end.

6. The vibration energy harvesting device according to claim 5, wherein: The substrate is a steel plate, and the piezoelectric sheet is a piezoelectric ceramic sheet.

7. The vibration energy harvesting device according to any one of claims 1 to 6, characterized in that: The bracket is also provided with a second power generation mechanism and a third power generation mechanism, and the power collection module is also connected to the second power generation mechanism and the third power generation mechanism. The first power generation mechanism, the second power generation mechanism and the third power generation mechanism are arranged in sequence, and the structures of the first power generation mechanism, the second power generation mechanism and the third power generation mechanism are the same.

8. The vibration energy harvesting device according to claim 7, wherein: The second power generation mechanism includes a second magnetic component, and the third power generation mechanism includes a third magnetic component. The masses of the first magnetic component, the second magnetic component, and the third magnetic component increase in sequence.

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