CN217538906U - Dielectric wind energy collecting device and passive wind energy collecting system - Google Patents

Abstract

The utility model belongs to the technical field of the wind power generation, especially, relate to a dielectric wind energy collection system and passive wind energy collection system. The dielectric wind energy collecting device comprises a dielectric power generation structure and a rotating structure. The dielectric power generation structure comprises a fixed seat, a rolling piece and two dielectric elastomer films, wherein a guide hole channel is arranged in the fixed seat, the two dielectric elastomer films are arranged in the guide hole channel at intervals, and the rolling piece is arranged in the guide hole channel in a sliding mode and located between the two dielectric elastomer films. The rotating structure comprises a supporting seat and a rotating part pivoted with the supporting seat, the rotating part can rotate in a preset vertical plane around a pivoting point under the action of wind power, and the fixing seat is connected with the rotating part and synchronously rotates along with the rotating part, so that the rolling part can slide in the guide hole channel in a reciprocating manner, and the two dielectric elastomer films are pushed and pressed by the rolling part. The utility model discloses can change wind energy into electric energy to can carry out the outdoor power supply to low energy consumption or small-size electronic equipment.

Description

Dielectric wind energy collecting device and passive wind energy collecting system

Technical Field

The utility model belongs to the technical field of the wind power generation, especially, relate to a dielectric wind energy collection system and passive wind energy collection system.

Background

Currently, the main ways of powering low-energy devices, such as wireless sensors, controllers, wearable devices, and small/miniature electronic devices, include wired power and chemical battery power. The wired power supply mode can generate unnecessary energy loss in the circuit arrangement, thereby increasing the cost, and even being incapable of being realized in certain small-sized electronic equipment application occasions; there are three problems with chemical battery powering: 1. the service life of the battery is limited; 2. environmental pollution is easy to cause; 3. batteries are difficult to replace in some configurations.

Instead of using wire transmission or chemical batteries, existing devices that rely on natural wind energy to generate electrical energy include: an electromagnetic wind power generator. However, the traditional device has the following problems in the working process that the existing electromagnetic wind energy collecting windmill generator suitable for large-scale power generation is overlarge in size, overhigh in height and overlarge in size, and is not suitable for outdoor power supply of small-sized power consumption devices although the power generation effect is good.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a dielectric wind energy collecting device, and aims to solve the problem of how to collect wind energy so as to supply power to low-energy-consumption equipment outdoors.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a dielectric wind energy harvesting device comprising:

the dielectric power generation structure comprises a fixed seat, a rolling piece and two dielectric elastomer films, wherein a guide pore passage is arranged in the fixed seat, the two dielectric elastomer films are arranged in the guide pore passage at intervals, and the rolling piece is arranged in the guide pore passage in a sliding manner and is positioned between the two dielectric elastomer films; and

the rotating structure comprises a supporting seat and a rotating part pivoted with the supporting seat, the rotating part can rotate around a pivoting point in a preset vertical plane under the action of wind force, and the fixing seat is connected with the rotating part and synchronously rotates along with the rotating part, so that the rolling part slides in the guide pore channel in a reciprocating manner, and the two dielectric elastomer films are pushed and pressed by the rolling part.

In some embodiments, the extension paths of the guide tunnels are arranged in a straight line.

In some embodiments, the extension path of the guide channel is arranged in an arc.

In some embodiments, the center of curvature of any point on the extension path of the guide duct and the pivot point are both located on the same side of the guide duct, or the center of curvature of any point on the extension path of the guide duct and the pivot point are respectively located on both sides of the guide duct.

In some embodiments, the guide hole has an extension path of a circular arc, and the central angle of the circular arc is greater than zero and less than ninety degrees.

In some embodiments, the cross-sectional shape of the guide channel is circular, and the rolling elements are spherical and fit into the guide channel.

In some embodiments, the rotating member includes a rotating seat pivotally connected to the supporting seat, and a plurality of blades connected to the rotating seat, the plurality of blades are arranged at intervals along a circumferential direction of the rotating seat, each blade is provided with the dielectric power generation structure, and each fixing seat is connected to each blade.

In some embodiments, a positioning groove is formed in a surface of the fixed seat, which is connected to the blade, the shape of the positioning groove is matched with the outer contour of the blade, and the blade is partially accommodated in the positioning groove.

In some embodiments, the supporting seat includes a supporting bottom plate and a supporting pillar having one end connected to the supporting bottom plate, and the other end of the supporting pillar is rotatably connected to the rotating seat.

Another purpose of the embodiment of this application still lies in providing a passive wind energy collection system, and it includes as above dielectric wind energy collection system, passive wind energy collection system still include the electromagnetism electricity generation structure and set up in from inhaling amplifier circuit on the electromagnetism electricity generation structure, the electromagnetism electricity generation structural connection the supporting seat rotates and connects the rotating member, the electromagnetism electricity generation structure can produce voltage under the drive of rotating member, from inhaling amplifier circuit and being used for enlarging voltage and with after enlarging voltage loading extremely dielectric elastomer membrane.

The beneficial effect of this application lies in: the rotating member rotates around the pivot point in a certain vertical plane under the drive of wind-force, and the fixing base rotates around the pivot point along with the rotating member in step to make the position of rolling member constantly change, the rolling member slides in the guide way promptly, make two dielectric elastomer membranes constantly receive the butt and the bulldoze of rolling member, and lead to its shape and surface area to change, and then change wind energy into the electric energy, thereby can carry out outdoor power supply to low energy consumption or small-size electronic equipment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or exemplary technical descriptions will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts.

FIG. 1 is a schematic perspective view of a dielectric wind energy harvesting device provided in an embodiment of the present application;

FIG. 2 is a cross-sectional schematic view of the dielectric wind energy harvesting device of FIG. 1;

fig. 3 is a partial enlarged view at a of fig. 2;

FIG. 4 is a schematic view of the assembly of the fan blade and the dielectric power generation structure of FIG. 1;

FIG. 5 is a schematic partial exploded view of the dielectric wind energy harvesting device of FIG. 1;

FIG. 6 is a schematic cross-sectional view of the electromagnetic generating structure of FIG. 5;

fig. 7 is a schematic diagram of a self-priming amplifying circuit according to an embodiment of the present application.

Wherein, in the figures, the various reference numbers:

100. a dielectric wind energy collection device; 10. a dielectric power generating structure; 200. a rotating structure; 201. a supporting base; 211. a support pillar; 212. a support base plate; 202. a rotating member; 221. a rotating base; 222. a blade; 30. an electromagnetic power generation structure; 11. a fixed seat; 12. a dielectric elastomer film; 13. a rolling member; 111. a guide channel; 112. positioning a groove; 31. a housing; 32. a motor housing; 33. a fan; 34. a stator winding; 35. a rotor; 36. a stator core;

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the present application, and the specific meanings of the above terms may be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1 and 3, the present embodiment provides a dielectric wind energy collecting apparatus 100, which can supply power to low-power or small-sized devices outdoors. Low power consumption or small devices include wireless sensors, small controllers, and wearable devices.

Referring to fig. 1 and 3, the dielectric wind energy collecting apparatus 100 includes a dielectric power generating structure 10 and a rotating structure 200. The dielectric power generating structure 10 includes a holder 11, a roller 13, and two dielectric elastomer films 12. The fixing base 11 is provided with a guide hole 111 therein, the two dielectric elastomer films 12 are arranged in the guide hole 111 at intervals, and the rolling member 13 is arranged in the guide hole 111 in a rolling manner and located between the two dielectric elastomer films 12.

Referring to fig. 1 and fig. 3, alternatively, in the embodiment, the fixing base 11 is made of a light alloy, such as an aluminum alloy, the fixing base 11 is of a hollow structure, a guide tube for forming the guide hole 111 is disposed inside the fixing base 11, and the guide tube may be made of an insulating material to prevent a loss of electric charge, such as plastic. The two ends of the guide tube respectively penetrate through the two oppositely arranged side surfaces of the fixed seat 11, the two dielectric elastomer films 12 are respectively positioned at the tube mouths at the two ends of the guide tube and are arranged along the radial direction of the guide pore channel 111, the rolling piece 13 can slide in the guide pore channel 111 in a reciprocating manner, namely can slide in a reciprocating manner along the extending path of the guide pore channel 111, and after the rolling piece slides in place, the rolling piece abuts against and pushes one of the dielectric elastomer films 12, so that the shape and the surface area of the dielectric elastomer film 12 are changed. It is understood that, in other embodiments, the inside of the fixing base 11 may also be a solid structure, and the inside of the fixing base 11 is provided with the guide hole 111, and the guide hole 111 penetrates through two opposite side surfaces of the fixing base 11. The ports at both ends of the guide hole 111 may be blocked by a blocking member, or the ports at both ends of the guide hole 111 may be blocked by two dielectric elastomer films 12.

Referring to fig. 1 and 3, the dielectric elastomer film 12 is a three-layer variable capacitor, and the dielectric elastomer film 12 includes a dielectric elastic film and flexible electrodes, and the flexible electrodes are covered on both surfaces of the dielectric elastic film. Under the condition of external input voltage, the dielectric elastomer film 12 is deformed under the action of external force, so that the capacitance of the dielectric elastomer film 12 is changed, and the change of the capacitance can generate current, thereby converting mechanical energy into electric energy.

Optionally, the rotating structure 200 includes a supporting base 201 and a rotating member 202 pivotally connected to the supporting base 201, the supporting base 201 is arranged in a vertical direction, and the rotating member 202 is pivotally connected to an upper end of the supporting base 201. The rotating member 202 can rotate around a pivot point in a predetermined vertical plane under the action of wind, and the fixing base 11 is connected to the rotating member 202 and rotates synchronously with the rotating member 202, that is, the fixing base 11 rotates around the pivot point, so that the rolling members 13 slide and/or roll in the guide hole 111 in a reciprocating manner, and the two dielectric elastomer films 12 are pushed by the rolling members 13.

Referring to fig. 1 and 3, the rotating member 202 rotates around the pivot point in a vertical plane under the driving of the wind force, and the fixing base 11 rotates synchronously around the pivot point along with the rotating member 202, so that the position of the rolling member 13 changes continuously, that is, the rolling member 13 slides in the guiding channel, so that the two dielectric elastomer films 12 can be continuously abutted and pushed by the rolling member 13, and the shape and the surface area of the dielectric elastomer films change, thereby converting the wind energy into electric energy, and supplying power to low-energy consumption or small electronic devices.

In some embodiments, the extension path of the guide hole 111 is arranged in a straight line, that is, the guide hole 111 is a straight line.

In some embodiments, the extending path of the guide hole 111 is arranged in an arc, and optionally, the guide hole 111 may be a plurality of curved arcs or a circular arc, it is understood that the extending path of the guide hole 111 is a smooth arc, which can reduce the collision between the rolling member 13 and the inner wall of the guide hole 111, and reduce the loss of mechanical energy of the rolling member 13, so that the rolling member 13 can drive the dielectric elastomer film 12 to deform maximally. It will be appreciated that the magnitude of the current generated by the dielectric elastomeric film 12 is related to the magnitude of the deformation of the dielectric elastomeric film 12, with the greater the deformation of the dielectric elastomeric film 12, the greater the current generated.

Referring to fig. 1 and 3, in some embodiments, the center of curvature of any point on the extending path of the guide hole 111 is located on the same side of the guide hole 111 as the pivot point. Optionally, the guide hole 111 is bent around the pivot point, so that the rolling member 13 can smoothly roll in the guide hole 111 during the rotation around the pivot point, and the collision between the rolling member 13 and the inner wall of the guide hole 111 is reduced.

In some embodiments, the curvature center of any point on the extending path of the guide duct 111 and the pivot point are respectively located at two sides of the guide duct 111, so that the rolling member 13 can smoothly roll in the guide duct 111 during the rotation process, and the collision resistance between the rolling member 13 and the inner wall of the guide duct 111 is reduced.

In some embodiments, the extending path of the guide hole 111 is a circular arc, and the central angle of the circular arc is greater than zero and less than ninety degrees. Optionally, the center of the extending path of the guide duct 111 is located at the pivot point, so that the rolling member 13 can smoothly roll in the guide duct 111 during the rotation process around the pivot point, and the collision resistance between the rolling member 13 and the inner wall of the guide duct 111 is reduced.

In some embodiments, the cross-sectional shape of the guide hole 111 is circular, and the rolling member 13 is spherical and fits into the guide hole 111. Alternatively, the diameter of the rolling member 13 is smaller than or equal to the inner diameter of the guide passage 111, so that the rolling member 13 rolls in the guide passage 111 and the collision resistance with the inner wall of the guide passage 111 is reduced.

Referring to fig. 1 and 3, it is understood that the cross-sectional shape of the guide passage 111 may be an ellipse or a polygon.

In some embodiments, the rotating member 202 includes a rotating seat 221 pivotally connected to the supporting seat 201, and a plurality of blades 222 connected to the rotating seat 221, the plurality of blades 222 are arranged, each blade 222 is arranged at intervals along a circumferential direction of the rotating seat 221, the dielectric power generation structure 10 is disposed on each blade 222, and each fixed seat 11 is connected to each blade 222. Optionally, in this embodiment, three blades 222 are provided, an included angle between any two blades 222 is 120 degrees, and three blades 222 can rotate in a vertical plane under the action of wind force.

Alternatively, the blades 222 are made of a low durometer plastic, reducing weight. Three open grooves are formed in the peripheral side surface of the rotary base 221 to ensure that the wiring can be smoothly connected to the impact dielectric elastomer film 12 through the open grooves of the rotary base 221.

It is understood that the dielectric elastomer film 12 is a dielectric generator.

Alternatively, the rolling member 13 is made of ceramic, so that accumulation of electric charges can be avoided, and the power generation efficiency of the dielectric elastomer film 12 can be improved.

Referring to fig. 4, in some embodiments, a positioning groove 112 is formed on a surface of the fixing base 11 connected to the vane 222, the shape of the positioning groove 112 is adapted to the outer contour of the vane 222, and the vane 222 is partially accommodated in the positioning groove 112. Alternatively, the positioning groove 112 and the vane 222 are partially coupled and the fixing base 11 and the vane 222 are connected by a bolt, which can improve the stability of the fixing base 11.

In some embodiments, the supporting base 201 includes a supporting base plate 212 and a supporting column 211 having one end connected to the supporting base plate 212, and the other end of the supporting column 211 is rotatably connected to the rotating base 221. Optionally, the support base plate 212 is laid flat, one end of the support column 211 is connected to the support base plate 212 through a bolt, and the other end of the support column 211 extends vertically upward and is connected to the rotating base 221. Optionally, the support base plate 212 and the support columns 211 are made of light metal, such as aluminum, so as to reduce the weight of the dielectric wind energy harvesting device 100 and facilitate portability.

Please refer to fig. 5 and fig. 6, the utility model also provides a passive wind energy collection system, which includes a dielectric wind energy collection device 100, the specific structure of the dielectric wind energy collection device 100 refers to the above embodiments, and since this adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solution of the above embodiments are also achieved, which is not repeated herein.

In some embodiments, the passive wind energy collecting system further includes an electromagnetic power generating structure 30 and a self-priming amplifying circuit disposed on the electromagnetic power generating structure 30, the electromagnetic power generating structure 30 is connected to the supporting base 201 and is rotatably connected to the rotating member 202, the electromagnetic power generating structure 30 can generate a voltage under the driving of the rotating member 202, and the self-priming amplifying circuit is configured to amplify the voltage and apply the amplified voltage to the dielectric elastomer film 12. Alternatively, the electromagnetic generating structure 30 includes a housing 31 connected to the supporting column 211, a motor housing 32 located in the housing 31, a rotor 35 located in the motor housing 32, a stator winding 34 located in the motor housing 32, a stator core 36 located in the motor housing 32, and a fan 33 located in the housing 31 and used for dissipating heat, and the rotary base 221 is connected to the rotor 35.

Referring to fig. 5 and fig. 6, alternatively, in windy environment, the rotating member 202 drives the electromagnetic generating structure 30 to operate, and the electromagnetic generating structure 30 spontaneously generates a voltage through the principle of cutting magnetic induction lines, which can be further used as an initial voltage of the dielectric wind energy collecting device 100, and by connecting the self-priming amplifying circuit to the two dielectric elastomer films 12, passive wind energy collection based on the dielectric elastomer films 12 can be achieved. The principle of the electromagnetic power generation structure 30 is the same as that of a conventional three-phase electromagnetic generator, a voltage can be generated through the rotation motion of the magnetic induction coil, the voltage is loaded to the self-absorption amplification circuit to become an initial voltage of the self-absorption amplification circuit, and then the voltage is cut off through the electromagnetic relay, so that the self-absorption amplification circuit is started, and a voltage which is ten times higher than the initial voltage provided by the electromagnetic power generation structure 30 is output.

Alternatively, a partial schematic diagram of the self-priming amplifying circuit is shown in fig. 7, and includes an initial voltage unit 19, wherein the voltage of the initial voltage unit 19 is derived from the electric energy generated by the electromagnetic generating structure 30 under the rotating excitation of the blade 222. The filter circuit unit 20 converts alternating current generated by the electromagnetic power generation structure 30 into direct current, the dielectric elastomer generator unit 24 needs to be acted under the direct current, the storage capacitor unit 21 is responsible for storing charges which are not consumed by the external load unit 25, the electromagnetic relay unit 22 is responsible for disconnecting initial voltage after the initial power supply is fully charged, the self-absorption amplifying circuit unit 23 is responsible for continuously expanding output charge quantity and voltage in series and parallel conversion, the effect of amplifying voltage is achieved, and the problem that the initial starting voltage with a large enough magnitude is difficult to provide in the field of dielectric elastomer power generation at present is solved through the self-absorption amplifying circuit.

Referring to fig. 5 and 6, the passive wind energy collection system can store electric energy in the form of elastic strain energy, and the elastic force can be loaded at any speed, and can be uniformly loaded, unevenly loaded or intermittently loaded, so that the system does not cause sudden stop, and has good stability, and therefore, the passive wind energy collection system is a good device for providing electric energy for uninterruptible equipment such as wireless sensors and environment monitoring equipment. After the dielectric elastomer film 12 is activated to generate electricity, the rotary electromagnetic generating structure 30 can still generate electricity continuously under the excitation of wind energy, and another secondary load can be connected to the electromagnetic generating structure 30 to utilize the electricity. And the synergistic energy harvesting and wind energy maximum utilization are realized.

The above are merely alternative embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims (10)

1. A dielectric wind energy harvesting device, comprising:

the dielectric power generation structure comprises a fixed seat, a rolling piece and two dielectric elastomer films, wherein a guide pore passage is arranged in the fixed seat, the two dielectric elastomer films are arranged in the guide pore passage at intervals, and the rolling piece is arranged in the guide pore passage in a sliding manner and is positioned between the two dielectric elastomer films; and

the rotating structure comprises a supporting seat and a rotating part pivoted with the supporting seat, the rotating part can rotate around a pivoting point in a preset vertical plane under the action of wind force, and the fixing seat is connected with the rotating part and synchronously rotates along with the rotating part, so that the rolling part slides in the guide pore channel in a reciprocating manner, and the two dielectric elastomer films are pushed and pressed by the rolling part.

2. The dielectric wind energy harvesting device of claim 1, wherein: the extension paths of the guide ducts are arranged in a straight line.

3. The dielectric wind energy harvesting device of claim 1, wherein: the extending path of the guide pore canal is arranged in an arc line.

4. A dielectric wind energy harvesting device according to claim 3, wherein: the curvature center of any point on the extension path of the guide pore channel and the pivot point are both positioned on the same side of the guide pore channel, or the curvature center of any point on the extension path of the guide pore channel and the pivot point are respectively positioned on two sides of the guide pore channel.

5. A dielectric wind energy harvesting device according to claim 3, wherein: the extending path of the guide hole is a section of circular arc, and the central angle of the circular arc is greater than zero and less than ninety degrees.

6. A dielectric wind energy harvesting device according to any one of claims 1 to 5, wherein: the cross section of the guide hole channel is circular, and the rolling piece is spherical and is matched with the guide hole channel.

7. A dielectric wind energy harvesting device according to any one of claims 1 to 5, wherein: the rotating part comprises a rotating seat and blades, the rotating seat is pivoted with the supporting seat, the blades are connected with the rotating seat, the blades are arranged in a plurality and are arranged at intervals along the circumferential direction of the rotating seat, the dielectric power generation structure is arranged on each blade, and each fixing seat is connected with each blade.

8. The dielectric wind energy harvesting device of claim 7, wherein: the surface of the fixed seat connected with the blade is provided with a positioning groove, the shape of the positioning groove is matched with the outer contour of the blade, and the blade part is contained in the positioning groove.

9. The dielectric wind energy harvesting device of claim 7, wherein: the supporting seat comprises a supporting bottom plate and a supporting column with one end connected with the supporting bottom plate, and the other end of the supporting column is rotatably connected with the rotating seat.

10. A passive wind energy harvesting system, comprising the dielectric wind energy harvesting device according to any one of claims 1 to 9, further comprising an electromagnetic power generating structure and a self-absorption amplifying circuit disposed on the electromagnetic power generating structure, wherein the electromagnetic power generating structure is connected to the supporting base and is rotatably connected to the rotating member, the electromagnetic power generating structure is capable of generating a voltage under the driving of the rotating member, and the self-absorption amplifying circuit is configured to amplify the voltage and apply the amplified voltage to the dielectric elastomer film.

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