CN212054987U

CN212054987U - Wind vibration power generation device

Info

Publication number: CN212054987U
Application number: CN202020385393.3U
Authority: CN
Inventors: 汪红兵
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-12-01
Anticipated expiration: 2030-03-24

Abstract

The utility model provides a wind power generation facility that shakes, which comprises a base, the fan, transfer line and electricity generation portion, fan and electricity generation portion set up respectively at the both sides face of base and connect through the transfer line transmission, electricity generation portion is including two at least piezoelectric plate spare and a knocking part, the both ends of transfer line are fixed with the fan respectively and strike the part, piezoelectric plate spare's one end and the fixed and piezoelectric plate spare setting of base side are on the rotation route of striking the part, piezoelectric plate spare's upper and lower surface is connected with the wire, the fan rotates through the wind action and causes through the transfer line transmission and strike the part and rotate, make to strike the part and strike and cause it to produce deformation on acting on piezoelectric plate spare, and produce free electric charge and draw forth the rectification storage through. The utility model discloses a carry out institutional advancement and optimization to it and make overall structure more compact. Meanwhile, the vibration strength of the structure is increased by knocking the piezoelectric ceramic piece, so that the power generation effect of the piezoelectric ceramic piece is improved.

Description

Wind vibration power generation device

Technical Field

The utility model relates to an energy technical field, concretely relates to wind power generation facility that shakes.

Background

With the increasing global warming and the shortage of petroleum energy, the search for multi-mode, multi-source and pollution-free renewable energy is the strategic focus of the scientific and technological development of the world now and in the future. The use of different methods to capture energy from the surrounding environment has been the focus of recent research discussions. Among various energy conversion types, the efficiency of converting mechanical energy generated by pressure, impact, vibration, etc. into electric energy based on the piezoelectric effect is inferior to that of solar energy and wind energy, and is a very promising renewable energy source.

Wind energy is a conversion form of solar energy, and is a renewable natural energy source which does not generate any pollutant emission and can be used everywhere. In the traditional wind power generation, a rotor is caused to rotate by using wind load, and the relative motion between the rotor and a stator is further used for cutting a magnetic line to generate induced electromotive force, so that the power supply to the load is realized. However, the power supply mode has large scale and complex process, and is not suitable for power supply of microelectronic devices.

With the rapid development of large-scale distributed wireless sensing systems and microelectronic devices in recent years, although the traditional chemical battery energy supply mode meets the requirements to a certain extent, the displayed defects are more and more obvious, such as large volume, limited service life, need of regular replacement and the like. The piezoelectric energy harvester based on the wind-induced vibration principle converts wind energy into vibration energy of a structure by using a wind-induced vibration mechanism, converts the vibration energy of the structure into electric energy by using a piezoelectric effect, can be used as a micro power source to replace a traditional battery for power supply, and is particularly suitable for microelectronic devices placed outdoors.

Disclosure of Invention

In view of this, the present invention provides a wind vibration power generation device, which employs a piezoelectric energy harvester based on wind-induced vibration principle to collect wind energy for power generation, and makes the overall structure of the power generation device more compact by performing structural improvement and optimization on the piezoelectric energy harvester. Meanwhile, the vibration strength of the structure is increased by knocking the piezoelectric ceramic piece, so that the power generation effect of the piezoelectric ceramic piece is improved.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a wind vibration power generation device comprises a base, a fan, a transmission rod and a power generation part, wherein the fan and the power generation part are respectively arranged on two side faces of the base and are in transmission connection through the transmission rod, the power generation part comprises at least two piezoelectric plates and a knocking component, the fan and the knocking component are respectively fixed at two ends of the transmission rod, one end of each piezoelectric plate is fixed on one side face of the base, the piezoelectric plates are arranged on a rotating path of the knocking component, the upper surface and the lower surface of each piezoelectric plate are connected with a lead,

the fan rotates under the action of wind and is driven by the transmission rod to enable the knocking component to rotate, so that the knocking component is impacted and acts on the piezoelectric plate to enable the piezoelectric plate to deform, free charges are generated on the surface of the piezoelectric plate, and the free charges are led out through a lead to be rectified and stored.

Preferably, the knocking component comprises a rocker and a knocking block, one end of the rocker is fixedly arranged at the end part of the transmission rod, the other end of the rocker is hinged with one end part of the knocking block, the other end part of the knocking block is arc-shaped, the fan rotates under the action of wind and drives the rocker to rotate through the transmission rod, and the rocker rotates to drive the knocking block to rotate relative to the transmission rod and the rocker respectively and to impact on the piezoelectric plate to deform.

Preferably, the two ends of the transmission rod are respectively provided with a convex structure, the outer surface of the convex structure is provided with threads, the central position of the fan and the end part of the rocker connected with the transmission rod are both provided with fixing through holes, and the convex structures at the two ends of the transmission rod penetrate through the fixing through holes of the fan and the rocker and are fixed through a first nut, so that the fan and the rocker are fixed at the two ends of the transmission rod.

Preferably, the distance between the piezoelectric plate and the transmission rod is equal to the sum of the lengths of the rocker and the knocking block.

Preferably, the end of the joint of the knocking block and the rocker is provided with a through hole, a bolt penetrates through the through hole and is fixed through a second nut so as to realize the hinged connection of the knocking block and the rocker, and when the fan drives the transmission rod to rotate, the knocking block rotates along with the rocker relative to the transmission rod, namely, the axis of the first nut is taken as a rotation center, and simultaneously, the knocking block rotates relative to the rocker, namely, the axis of the second nut is taken as a rotation center.

Preferably, the piezoelectric plate comprises a fixed supporting plate, a piezoelectric ceramic piece and fixed feet, wherein the fixed supporting plate is arranged on a rotating path of the knocking component, one end of the fixed supporting plate is fixedly connected with the side face of the base, the fixed supporting plate faces towards the two ends of the side face of the knocking component, the fixed feet vertically extend, the two ends of the piezoelectric ceramic piece are fixed to the fixed feet, and a gap is formed between the piezoelectric ceramic piece and the fixed supporting plate to form a deformation space of the piezoelectric ceramic piece.

Preferably, the upper surface and the lower surface of the piezoelectric ceramic plate are both connected with the lead.

Preferably, the two ends of the bottom of the base extend to form fixing lugs, and fixing holes for fixing the whole device are formed in the center positions of the fixing lugs.

Compared with the prior art, the utility model provides a pair of wind power generation facility that shakes, this power generation facility compact structure can install power generation facility's the portion of generating electricity and provide the electric energy for it in the microelectronic device. And the power generation device adopts a power generation mode of knocking the piezoelectric ceramic piece, the deformation degree of the piezoelectric ceramic piece is large, and the positive piezoelectric effect is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a wind vibration power generation device provided by the present invention;

fig. 2 is a side view of a wind vibration power generation device provided by the present invention;

fig. 3 is a schematic cross-sectional view in the direction C-C in fig. 2.

Reference numerals and component parts description referred to in the drawings:

1. a base; 2. a fan; 3. a transmission rod; 4. fixing the ear; 5. a fixing hole; 6. a rocker; 7. knocking the block; 8. a first nut; 9. a bolt; 10. a second nut; 11. fixing the supporting plate; 12. piezoelectric ceramic plates; 13. a fixing leg; 14. and (4) deformation space.

Detailed Description

The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, a wind vibration power generation device includes a base 1, a fan 2, a transmission rod 3, and a power generation unit. The bottom both ends of base 1 extend and are equipped with fixed ear 4, and the central point of fixed ear 4 puts and offers the fixed orifices 5 that are used for fixed whole device, wears to establish through this fixed orifices 5 through the screw and can install whole device in outdoor suitable place or certain microelectronic device.

The fan 2 and the power generation part are respectively arranged on two side surfaces of the base 1 and are in transmission connection through a transmission rod 3. The power generation part comprises at least two piezoelectric plates and a knocking part, the two ends of the transmission rod 3 are respectively fixed with the fan 2 and the knocking part, one end of each piezoelectric plate is fixed with the side face of the base 1, the piezoelectric plates are arranged on the rotating path of the knocking part, and the upper surface and the lower surface of each piezoelectric plate are connected with wires (not shown in the figure).

Furthermore, the knocking component comprises a rocker 6 and a knocking block 7. Both ends of transfer line 3 are provided with the convex part structure respectively, and the surface of convex part structure has seted up the screw thread, and the central point of fan 2 puts and the tip department that rocker 6 and transfer line 3 are connected has all seted up fixed through-hole, and the convex part structure at transfer line 3 both ends is worn to establish the fixed through-hole through fan 2 and rocker 6 and is fixed through first nut 8 to ensure that fan 2 and rocker 6 fix in the both ends department of transfer line 3. The end of the rocker 6 not connected to the transmission rod 3 is hinged to one end of the striking block 7. The through-hole has all been seted up with the tip of rocker 6 junction to strike piece 7 promptly, wears to be equipped with the bolt in the through-hole and fixes through second nut 10 in order to realize striking piece 7 and rocker 6 hinge joint.

The fan 2 rotates under the action of wind and is driven by the transmission rod 3 to enable the rocker 6 to rotate, the knocking block 7 rotates along with the rocker 6 relative to the transmission rod 3, namely, the axis of the first nut 8 is taken as a rotation center, and simultaneously, the knocking block rotates relative to the rocker 6, namely, the axis of the second nut 10 is taken as a rotation center, and the knocking block strikes and acts on the piezoelectric plate to enable the piezoelectric plate to deform, and generates free charges on the surface of the piezoelectric plate, and the free charges are led out through a lead to be rectified and stored.

The piezoelectric plate specifically comprises a fixed supporting plate 11, a piezoelectric ceramic plate 12 and a fixed pin 13. The fixed supporting plate 11 is arranged on the rotation path of the knocking block 7 and one end of the fixed supporting plate is fixedly connected with the side surface of the base 1. Fixing legs 13 are vertically extended from two ends of the side surface of the fixing supporting plate 11 facing the knocking block 7, and two ends of the piezoelectric ceramic plate 12 are fixed on the fixing legs 13. A gap is arranged between the piezoelectric ceramic piece 12 and the fixed supporting plate 11 to form a deformation space 14 of the piezoelectric ceramic piece, and the upper surface and the lower surface of the piezoelectric ceramic piece 12 are both connected with leads which can lead out free charges on the surface of the piezoelectric ceramic piece 12. In order to ensure that the striking block 7 can strike the piezoceramic wafers 12, the distance from the piezoceramic wafers 12 to the transmission rod 3 is equal to the sum of the lengths of the rocker arm 6 and the striking block 7. Meanwhile, the end part of the knocking block 7, which is not connected with the rocker 6, is arc-shaped, so that when the knocking block 7 hits the piezoelectric ceramic piece 12, the sharp end part can be prevented from damaging the piezoelectric ceramic piece 12.

When the power generation device works, the power generation device is firstly installed at a proper place. The wind drives the fan 2 to rotate, and the transmission rod 3 rotates along with the fan 2. At this time, the rocking bar 6 and the striking block 7 rotate together with the driving rod 3, and the striking block 7 can also rotate relative to the rocking bar 6 and strike the piezoelectric ceramic plate 12 disposed on the rotation path thereof. The piezoceramic wafer 12 deforms under stress. Because the piezoelectric ceramic plate 12 has a positive piezoelectric effect, when the piezoelectric ceramic plate 12 deforms, free charges are generated on the surface of the piezoelectric ceramic plate 12, are led out through the leads on the upper surface and the lower surface of the piezoelectric ceramic plate, and are stored through rectification to supply power for a load.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wind vibration power generation device is characterized in that: the fan and the power generation part are respectively arranged on two side faces of the base and are in transmission connection through the transmission rod, the power generation part comprises at least two piezoelectric plates and a knocking component, the fan and the knocking component are respectively fixed at two ends of the transmission rod, one end of each piezoelectric plate is fixed on one side face of the base, the piezoelectric plates are arranged on a rotating path of the knocking component, the upper surface and the lower surface of each piezoelectric plate are connected with leads,

2. A wind vibration power generation device according to claim 1, wherein: the knocking component comprises a rocker and a knocking block, one end of the rocker is fixedly arranged at the end part of the transmission rod, the other end of the rocker is hinged with one end part of the knocking block, the other end part of the knocking block is arc-shaped, the fan rotates under the action of wind and drives the rocker to rotate through the transmission rod, and the rocker rotates to drive the knocking block to rotate relative to the transmission rod and the rocker and to hit the piezoelectric plate to deform.

3. A wind vibration power generation device according to claim 2, wherein: the fan and the rocker are fixed through the fixing through holes of the fan and the rocker and fixed through a first nut, so that the fan and the rocker are fixed at two ends of the transmission rod.

4. A wind vibration power generation device according to claim 2, wherein: the distance between the piezoelectric plate and the transmission rod is equal to the sum of the lengths of the rocker and the knocking block.

5. A wind vibration power generation device according to claim 3, wherein: the fan is characterized in that through holes are formed in the end parts of the joints of the knocking blocks and the rocking rods, bolts penetrate through the through holes and are fixed through second nuts to achieve hinged connection of the knocking blocks and the rocking rods, when the fan drives the transmission rod to rotate, the knocking blocks rotate relative to the transmission rod along with the rocking rods, namely, the axes of the first nuts are used as the rotation centers, and meanwhile, the knocking blocks rotate relative to the rocking rods, namely, the axes of the second nuts are used as the rotation centers.

6. A wind vibration power generation device according to claim 1, wherein: piezoelectric plate is including fixed layer board, piezoceramics piece and fixed foot, fixed layer board sets up strike on the rotation route of part and its one end with base side fixed connection, fixed layer board orientation the perpendicular extension in side both ends of striking the part is equipped with fixed foot, the both ends of piezoceramics piece are fixed on the fixed foot, piezoceramics piece with it constitutes to have the clearance between the fixed layer board piezoceramics piece's deformation space.

7. A wind vibration power generation device according to claim 6, wherein: the upper surface and the lower surface of the piezoelectric ceramic piece are both connected with the leads.

8. A wind vibration power generation device according to any one of claims 1 to 7, wherein: the bottom both ends of base extend and are equipped with fixed ear, the central point of fixed ear puts and offers the fixed orifices that is used for fixed whole device.