TWI806713B - Wind-driven energy harvesting system - Google Patents

Abstract

A wind-driven energy harvesting system includes a rotatable windmill, at least one protruding unit, a first elastic sheet unit, a second elastic sheet unit and a first fixing unit. The rotatable windmill is driven to rotate by a wind force and has a shaft sleeve portion. The at least one protruding unit is formed on the shaft sleeve portion for mounting a first magnet piece. One end of the first elastic piece unit is mounted with a second magnet piece with different magnetic properties from the first magnet piece. The second elastic sheet unit is adjacent to the first elastic sheet unit, and a piezoelectric material is installed at one end of the second elastic sheet unit. The first fixing unit is used for connecting with the other ends of the first elastic sheet unit and the second elastic sheet unit respectively. When the rotatable windmill rotates, it drives the firs magnet piece rotate synchronously, and the second magnet piece is influenced by the magnetic force of the first magnet piece to drive the first elastic sheet unit to swing, and slaps the piezoelectric material to produce deformation to generate an electrical signal.

Description

Wind Hunting System

The present invention relates to an energy hunting system, in particular to a wind energy hunting system.

The development of green energy technology has become the trend of the times in recent years. Among the many green energies, all hope to generate endless energy through the cycle of nature. Among them, vibration occurs in daily life all the time, and because vibration is ubiquitous, research on vibration energy harvesters that use vibration to generate electricity is a very popular field. If these vibrations can be controlled and applied, it will be an inexhaustible green energy technology.

At present, the vibration energy harvesting system or energy hunting system (Vibration Energy Harvester (VEH)) in green energy technology is the research of converting the energy generated by vibration into electrical energy.

The traditional energy hunting system is to place the piezoelectric sheet at the root of the energy hunting system (or wind-driven energy hunting system), and use various vibration methods (such as wind energy or vibration caused by a general vibrating body) to make the piezoelectric sheet Deformation occurs, which is then converted into electrical energy. However, the energy-hunting structure requires a long and flexible piezoelectric material, which is expensive and not suitable for general commercial mass production. In addition, this design can only provide the electric energy caused by the deformation of the piezoelectric material, and there is no additional power generation benefit that can be achieved by general inventions or innovative technologies.

Therefore, how to provide a "wind energy hunting system" has become a problem to be solved in the industry.

An embodiment of the present invention provides a high wind energy hunting system, including a rotatable windmill, at least one protruding unit, a first elastic unit, a second elastic unit and a first fixing unit. rotatable The windmill is driven to rotate by wind power and has a bushing. At least one protruding unit is formed on the sleeve part for installing the first magnet part. The first elastic piece unit is equipped with a second magnet piece having a different magnetism from the first magnet piece at one end thereof. The second elastic piece unit is adjacent to the first elastic piece unit, and a piezoelectric material is installed on one end of the second elastic piece unit. The first fixing unit is used to connect with the other ends of the first elastic unit and the second elastic unit respectively. When the rotatable windmill rotates, the first magnet part is synchronously driven to rotate, and the second magnet part is affected by the magnetic force of the first magnet part to drive the first shrapnel unit to swing, and slaps the piezoelectric material to generate deformation and form an electric signal.

In some embodiments, it further includes a protection unit installed on the second spring piece unit, and the protection unit includes an installation portion and a curved surface. The mounting part is used for sheathing on the piezoelectric material of the second elastic piece unit. The curved surface is formed on a surface of the installation part, and is used for receiving the slapping force of the first shrapnel unit.

In some embodiments, when the mounting portion is sleeved on the piezoelectric material, the piezoelectric material is exposed outside the mounting portion.

In some embodiments, about 40% of the area of the piezoelectric material is exposed outside the mounting portion.

In some embodiments, the protection unit is made of plastic material.

In some embodiments, the protection unit is fabricated using 3D printing technology.

In some embodiments, wind power is generated by a powered propeller.

In some embodiments, a wind collecting cover is also included between the power propeller and the rotatable windmill to concentrate the wind blowing to the rotatable windmill.

In some embodiments, there is also a shaft penetrating through the sleeve portion, so that the rotatable windmill can rotate along the circumference of the shaft.

In some embodiments, a second fixing unit is also included for fixing the shaft on a platform.

In order to make the present invention more obvious and understandable, the following special examples are given together with the accompanying drawings as examples. The details are as follows.

10: Power propeller

12: wind power

20: Rotatable windmill

22: Shaft sleeve

24: Highlight unit

26: First magnet piece

28: blade part

30: The first shrapnel unit

32: Second magnet piece

40: The second shrapnel unit

42:Piezoelectric material

44: Protection unit

44a: Installation Department

44b: curved surface

50: The first fixed unit

52: shaft

54: The second fixed unit

60: Bracket

61: First Crossbar

62: Second crossbar

70: Wind collecting hood

80: platform

100:Wind energy hunting system

Figure 1 is a schematic view of the appearance and structure of an embodiment of the present invention.

Fig. 2 is a schematic diagram of the detailed structure of the embodiment of the present invention.

The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

For the sake of clarity and convenience of drawing description, the size and proportion of each component in the drawing may be presented enlarged or reduced. In the following description and/or claims, when it is mentioned that an element is "connected" or "coupled" to another element, it may be directly connected or coupled to the other element or there may be an intervening element; When "directly connected" or "directly coupled" to another element, there are no intervening elements, and other words used to describe the relationship between elements or layers should be interpreted in the same way; "first", "second", etc. Ordinal numbers have no sequential relationship with each other, and are only used to mark and distinguish two different elements with the same name. For ease of understanding, the same components in the following embodiments are described with the same symbols.

Please refer to Figure 1, which is a schematic diagram of the appearance structure of the embodiment of the present invention. As shown in FIG. 1 , the wind energy hunting system 100 includes a rotatable windmill 20 , a protruding unit 24 , a first elastic unit 30 , a second elastic unit 40 and a first fixing unit 50 .

The rotatable windmill 20 is fixed between the wind collecting cover 70 and the second fixing unit 54 through the shaft 52 . The rotatable windmill 20 is driven to rotate by wind power 12 . The wind power 12 can be generated by the power propeller 10 . The power propeller 10 can be, for example, a fan blade module of an unmanned aerial vehicle, a helicopter rotor module, a fan blade module of a wind power generator, and the like.

The wind collecting cover 70 is located between the power propeller 10 and the rotatable windmill 20 . More specifically, the conical air inlet (not labeled in the figure) of the wind collecting hood 70 is provided with the power propeller 10 . Both sides of the conical air inlet are pierced with first cross bars 61 . Two ends of the first cross bar 61 are respectively connected to the bracket 60 . The cylindrical air outlet (not labeled in the figure) of the wind collecting hood 70 is located below the conical air inlet. The two sides of the cylindrical air outlet are pierced with second cross bars 62 . Both ends of the second cross bar 62 are respectively connected to the bracket 60 . The inside of the cylindrical air outlet is provided with a honeycomb strip-shaped air duct structure, which can be used to send out the wind force 12 generated by the power propeller 10 in a concentrated manner. In other words, the wind collecting cover 70 is used to concentrate the wind force 12 blowing to the rotatable windmill 20 . The wind collecting hood 70 can be made of plastic or metal.

The first fixing unit 50 is fixed on the bracket 60 , and the bracket 60 is fixed on the platform 80 . The first fixing unit 50 is used to connect with the other ends of the first elastic unit 30 and the second elastic unit 40 respectively. The first fixing unit 50 can be made of plastic or metal.

One end of the second fixing unit 54 is connected to the shaft 52 . The other end of the second fixing unit 54 is connected to the platform 80 . The second fixing unit 54 is used to fix the shaft 52 on the platform 80 so that the rotatable windmill 20 is substantially vertically disposed on the platform 80 .

In this embodiment, a set of the rotatable windmill 20 , the protruding unit 24 , the first elastic unit 30 , the second elastic unit 40 and the first fixing unit 50 is used as an example for illustration, but it is not limited thereto. In some implementations, the number of the rotatable windmill 20 , the protruding unit 24 , the first elastic unit 30 , the second elastic unit 40 and the first fixing unit 50 can also be multiple groups.

Next, please refer to FIG. 2 , which is a schematic diagram of a detailed structure of an embodiment of the present invention. As shown in FIG. 2 , the relative positions and detailed structures of the rotatable windmill 20 , the first magnet part 26 , the second magnet part 32 , the first elastic piece unit 30 and the second elastic piece unit 40 can be seen more clearly.

The rotatable windmill 20 has a sleeve portion 22 , a protruding unit 24 and a blade portion 28 . The outer appearance of the sleeve portion 22 is generally a circular cylindrical structure. The sleeve portion 22 is sleeved on the shaft 52 . In other words, the shaft 52 passes through the sleeve portion 22 so that the rotatable windmill 20 can rotate along the circumference of the shaft 52 . In fact, the sleeve portion 22 A bearing part (not shown) may be provided between the inside of the shaft and the shaft 52 to make the rotatable windmill 20 rotate along the circumference of the shaft 52 .

The protruding unit 24 generally presents an L-shaped seat structure. The protruding unit 24 is formed on the sleeve part 22 . The protruding unit 24 is used for installing the first magnet part 26 . In some embodiments, the number of protruding units 24 can be 1, 2, 3, 4, 5, or 6, and they are arranged equidistantly or not equidistantly around the circumferential surface of one end of the sleeve portion 22 . The appearance of the blade portion 28 generally presents a fan-shaped sheet structure. The blade portion 28 and the sleeve portion 22 form an angle of about 45° or 60° (based on the direction of the shaft 52 for angle comparison).

One end of the first elastic unit 30 is mounted with a second magnet 32 having a magnetic field different from that of the first magnet 26 . The appearance of the first elastic piece unit 30 generally presents a long rectangular sheet-like structure, but not limited thereto, and may also have other geometric shapes, for example. The material of the first elastic piece unit 30 can be made of metal material (for example, elastic steel piece).

The second elastic unit 40 is adjacent to the first elastic unit 30 . The appearance of the second elastic piece unit 40 generally presents a long rectangular sheet-like structure, but not limited thereto, and may also have other geometric shapes, for example. The material of the second elastic piece unit 40 can be made of metal material (for example, elastic steel piece).

A piezoelectric material (piezoelectric material) 42 is mounted on one end of the second elastic unit 40 . The piezoelectric material 42 can be installed on one side and/or the other side of the second elastic piece unit 40 by sticking. The appearance of the piezoelectric material 42 generally presents a long rectangular sheet structure, but it is not limited thereto, and may also have other geometric shapes, for example. The piezoelectric material 42 has the property of converting mechanical energy into electrical energy. When the piezoelectric material 42 is deformed by an external force, the piezoelectric effect is used to generate a corresponding electrical signal. The piezoelectric material 42 can be roughly classified into four types: piezoelectric single crystal, piezoelectric polycrystal, piezoelectric composite material, and piezoelectric polymer.

For example, when the rotatable windmill 20 rotates, the first magnet part 26 is synchronously driven to rotate, and the second magnet part 32 is affected by the magnetic force of the first magnet part 26 to drive the first shrapnel unit 30 to swing and slap the piezoelectric material The surface of the piezoelectric material 42 deforms the piezoelectric material 42 to form an electrical signal. Because this piezoelectric material 42 has the application of slapping force in addition to the deformation, the general piezoelectric material can be used to achieve this purpose. There is no need for particularly long and flexible expensive piezoelectric materials, so the present invention is economical.

The protection unit 44 is installed on the second elastic unit 40 . The protection unit 44 is used to protect the piezoelectric material 42 on the second spring unit 40 . For example, if there is no protection unit 44, the first elastic unit 30 will directly slap the piezoelectric material 42 on the second elastic unit 40, and cause damage to the piezoelectric material 42, shortening the usable life of the piezoelectric material 42 . In other words, the design of the protection unit 44 can prolong the service life of the piezoelectric material 42 .

The protection unit 44 includes a mounting portion 44a and a curved portion 44b. The protection unit 44 can be made of plastic material. The protection unit 44 is manufactured using 3D printing technology. The appearance of the mounting portion 44a is generally in the shape of a long rectangular sheet. The mounting portion 44 a has a groove design for being sleeved on the piezoelectric material 42 of the second elastic piece unit 40 . The curved portion 44b is formed on one side surface of the mounting portion 44a. The appearance of the curved portion 44b is generally a semicircular sheet structure. The curved portion 44b is used to receive the striking force of the first spring unit 30 . In some embodiments, when the installation part 44a is sleeved on the piezoelectric material 42, the piezoelectric material 42 is exposed outside the installation part 44a. In some embodiments, about 40% of the area of the piezoelectric material 42 is exposed outside the mounting portion 44a.

It is worth noting that the semicircular top of the curved portion 44b can receive the slapping force from the second spring unit 40 intensively, and distribute the received slapping force to the piezoelectric material 42 in the mounting portion 44a as evenly as possible. In this way, it can ensure that the received tapping force is stable each time, so that the piezoelectric material 42 can form a stable electrical signal. In other words, the curved surface 44b can ensure that the slapping force can be fixedly applied to a specific position of the piezoelectric material 42, avoiding irregular slapping points and slapping forces, causing uneven force on the piezoelectric material 42, or affecting periodic slapping Frequency of.

To sum up, the wind power hunting system of the present invention can recycle the wind power flow generated by the power propeller, so as to drive the mutual repulsion of the magnets, make the elastic steel swing, cause the deformation of the piezoelectric material and slap each other, thereby adding The effect is converted into stable electrical energy. And install a piezoelectric material protection unit with a curved surface to solve the problem of uneven force on the piezoelectric sheet due to irregular slapping points and slapping forces in the conventional technology.

According to the protection unit of the embodiment of the present invention, the received slapping force can be evenly distributed to the piezoelectric material, so that the piezoelectric material can form a stable electrical signal, so that the power generation benefit can be utilized and exerted to the greatest extent.

According to the protection unit of the embodiment of the present invention, the service life of the piezoelectric material can be effectively extended, thereby increasing the service life of the wind energy hunting system.

According to the wind collecting hood of the embodiment of the present invention, the unstable wind flow generated by the power propeller can be concentrated in a controllable wind outlet range to form a stable wind source, and then the rotatable windmill can stably drive the first magnet to rotate .

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the scope of the appended patent application.

10: Power propeller

12: wind power

20: Rotatable windmill

30: The first shrapnel unit

32: Second magnet piece

40: The second shrapnel unit

50: The first fixed unit

52: shaft

54: The second fixed unit

60: Bracket

61: First Crossbar

62: Second crossbar

70: Wind collecting hood

80: platform

100:Wind energy hunting system

Claims (10)

A wind energy hunting system, comprising: a rotatable windmill, driven to rotate by a wind force, and has a shaft sleeve; at least one protruding unit is formed on the shaft sleeve to install a first magnet; a first A shrapnel unit, one end of which is equipped with a second magnet piece with a different magnetism from the first magnet piece; a second shrapnel unit, adjacent to the first shrapnel unit, a piezoelectric material is installed at one end of the second shrapnel unit; and a first fixing unit, which is used to connect with the other end of the first elastic piece unit and the second elastic piece unit respectively; wherein when the rotatable windmill rotates, it synchronously drives the first magnet to rotate, and the second magnet The component is affected by the magnetic force of the first magnet component to drive the first elastic piece unit to swing, and slaps the piezoelectric material to generate deformation and form an electric signal. The wind energy hunting system as described in claim 1, further comprising a protection unit installed on the second spring unit, the protection unit includes: a mounting part, used to be sleeved on the pressure of the second spring unit on the electrical material; and a curved surface formed on a surface of the mounting part for receiving the striking force of the first shrapnel unit. The wind energy hunting system according to claim 2, wherein when the installation part is sleeved on the piezoelectric material, the piezoelectric material is exposed outside the installation part. In the wind power hunting system as described in claim 3, about 40% of the area of the piezoelectric material is exposed outside the installation part. The wind energy hunting system as described in Claim 2, wherein the protection unit is made of plastic. The wind power hunting system as described in Claim 2, wherein the protection unit is manufactured using 3D printing technology. The wind energy hunting system as claimed in claim 1, wherein the wind force is generated by a powered propeller. The wind energy hunting system according to claim 7, further comprising a wind collecting cover located between the power propeller and the rotatable windmill for concentrating the wind blowing to the rotatable windmill. The wind energy hunting system according to claim 1, further comprising a shaft penetrating through the shaft sleeve so that the rotatable windmill can rotate along the circumference of the shaft. The wind energy hunting system according to claim 9, further comprising a second fixing unit for fixing the shaft on a platform.

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