CN111600438A - Rotary pendulum type electromagnetic-friction composite generator - Google Patents
Rotary pendulum type electromagnetic-friction composite generator Download PDFInfo
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- CN111600438A CN111600438A CN202010529948.1A CN202010529948A CN111600438A CN 111600438 A CN111600438 A CN 111600438A CN 202010529948 A CN202010529948 A CN 202010529948A CN 111600438 A CN111600438 A CN 111600438A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
Abstract
The invention relates to a rotary pendulum type electromagnetic-friction composite generator, and belongs to the technical field of energy collection. The generator includes: the power generation device comprises a friction power generation unit, an electromagnetic power generation unit, a power unit and a rotating blade unit. The friction power generation unit comprises an electrode array and a flexible blade array; the electromagnetic power generation unit comprises a permanent magnet array and a coil array; the power unit comprises a pendulum mass block; the rotary blade unit includes a blade and a one-way bearing. The outer cylinder, the electrode array and the coil array form a stator, the unidirectional bearing, the fan blades, the permanent magnet array and the flexible blade array form a rotor, and the pendulum is excited by the outside world to serve as an internal power source. On one hand, the device of the invention utilizes the electromagnetism-friction combined type power generation to improve the energy conversion efficiency; on the other hand, the reciprocating motion is converted into continuous rotating motion through the combination of the pendulum and the rotating blades, and the ultra-low frequency human motion mechanical energy and wave energy can be collected and the output power can be improved.
Description
Technical Field
The invention belongs to the technical field of energy collection, and relates to a rotary pendulum type electromagnetic-friction composite generator.
Background
With the rapid development of the internet of things technology, more and more micro sensors are widely applied to various fields such as health monitoring, environmental protection, infrastructure monitoring and the like. The traditional power supply mode cannot meet the requirements of wireless property, portability, environmental protection and the like of the micro equipment. In recent years, micro-energy collection technology is more and more emphasized and is a reliable and independent power supply strategy.
Human motion energy and wave energy have wide prospects in the field of energy collection, and human motion and waves are characterized by random and irregular vibration with ultralow frequency. Thus, the power output of conventional resonance-based vibration energy harvesters is limited, and conversely, the infinite rotary motion of the pendulum rotor can be a good solution to the limitations of conventional harvesters. The friction nano generator based on the frictional electrification and the electrostatic induction coupling has the characteristics of high energy conversion efficiency, good reliability and the like. But there is a problem that the output current is low. An electromagnetic generator with low impedance and high output current can be used as a complementary method, and the high output performance of the energy collector can be realized.
Disclosure of Invention
In view of this, the present invention provides a rotary pendulum type electromagnetic-friction composite generator, which collects ultra-low frequency human motion energy and wave energy, and converts low frequency into high frequency to improve output power.
In order to achieve the purpose, the invention provides the following technical scheme:
a rotary pendulum electromagnetic-friction hybrid generator comprising: the power generation device comprises a friction power generation unit, an electromagnetic power generation unit, a power unit and a rotating blade unit;
urceolus, electrode array and coil array constitute the stator, and one-way bearing, flabellum, electricity generation permanent magnet array and flexible vane array constitute the rotor, wherein:
the friction power generation unit includes: the electrode array is fixed on the inner wall of the outer barrel; the flexible blade array is connected with the fan blades, rotates along with the rotating blades and is in contact with the electrode array;
the electromagnetic power generation unit includes: the fan comprises a permanent magnet array and a coil array, wherein the permanent magnet array is embedded in a fan leaf and rotates along with the fan leaf, the coil array is fixed on a cover plate at the right end, and the number of coils is the same as that of the permanent magnets;
the power unit includes: the pendulum mass block is made of metal materials of tungsten or copper, is fixed with the central supporting shaft, and is excited by external mechanical motion, and the pendulum generates reciprocating motion under the action of gravity or inertia to drive the central supporting shaft to rotate, namely, the pendulum mass block alternates clockwise and anticlockwise;
the rotary blade unit includes: the fan blade assembly comprises fan blades and a one-way bearing, wherein the one-way bearing can freely rotate in one direction, and is in a locked state in the other direction, which is assumed to be clockwise, the one-way bearing is embedded in the center of the fan blades and sleeved on a central supporting shaft, an outer ring is fixed with the fan blades, and an inner ring is fixed with the central supporting shaft; when the central supporting shaft rotates clockwise, the one-way bearing and the fan blades, namely the rotor, are driven to rotate clockwise, and due to the action of the gravity and the inertia of the rotor, even if the central supporting shaft stops or rotates in the opposite direction, the rotor can still keep rotating in the original direction for a certain time.
Optionally, the magnet in the permanent magnet array is a cylinder, and the material of the magnet is neodymium iron boron; the coil array is uniformly distributed on the right end cover plate and corresponds to the permanent magnet array.
Optionally, the electrode array is uniformly distributed on the inner side surface of the outer cylinder, the number of the electrode array is even, all the electrodes are connected in series to form an electrode 1 and an electrode 2, and two adjacent electrodes are respectively located on the electrode 1 and the electrode 2;
the two electrodes are made of conductive metal material copper foil.
Optionally, one end of the flexible blade array is adhered to the supporting plate on the surface of the blade, and the other end of the flexible blade array is in flexible contact with the electrode array;
the flexible blades are rectangular, the number of the flexible blades is half of the number of the electrodes, and the flexible blades are made of polytetrafluoroethylene film materials.
Optionally, the whole generator is in a cylindrical shape, the left end cover plate and the right end cover plate are circular flat plates, two ends of the outer cylinder are sealed, the centers of the left end cover plate and the right end cover plate are respectively provided with a circular hole, and a bearing is embedded in the circular holes and connected with the central supporting shaft;
the left end cover plate, the right end cover plate and the outer barrel are made of acrylic, and the central supporting shaft is made of metal.
The invention has the beneficial effects that: the working characteristic of the one-way bearing is utilized and the reciprocating motion of the pendulum is combined, so that the low-frequency reciprocating motion is converted into high-frequency rotating motion, and the output power of the generator is improved. The friction power generation and the electromagnetic power generation are combined, energy with wider range of frequency is collected, and the energy conversion efficiency is improved. And the flexible contact between the blade and the electrode is adopted, so that the unnecessary frictional resistance is reduced. Therefore, the invention is suitable for collecting ultra-low frequency and irregular human body movement energy and wave energy.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is an overall view of a rotary pendulum type electromagnetic-friction composite generator provided by the present invention with a left end cover removed;
FIG. 2 is a front view of a rotor of a rotary pendulum-type electromagnetic-friction hybrid generator provided by the present invention with left and right end caps removed;
FIG. 3 is a schematic three-dimensional structure of a stator;
FIG. 4 is a schematic three-dimensional structure of a rotor;
FIG. 5 is a schematic view of a right end cover plate;
reference numerals: 101-outer cylinder, 102-electrode array, 103-pendulum mass, 201-flexible blade array, 202-support flat plate, 203-permanent magnet array, 204-fan blade, 205-one-way bearing, 206-central support shaft, 301-bearing, 302-coil, 303-right end cover plate.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
The invention provides a rotary pendulum type electromagnetic-friction composite generator, as shown in fig. 1, which mainly comprises: the power generation device comprises a friction power generation unit, an electromagnetic power generation unit, a power unit and a rotating blade unit. The outer cylinder 101, the electrode array 102 and the coil array 302 form a stator as shown in fig. 3, and the unidirectional bearing 205, the fan blade 204, the permanent magnet array 203 and the flexible blade array 201 form a rotor as shown in fig. 4.
The device is a cylindrical shape as a whole, the left end cover plate is hidden in the figure and the right side cover plate 303 is the same circular flat plate for closing both ends of the outer tub 101 and serving as a fixing bracket for the central support shaft 206. The center of the cover plate is respectively provided with a round hole, a bearing 301 is embedded in the round holes and connected with the center supporting shaft 206, and when the center supporting shaft 206 rotates, the bearings 301 at the two ends play a role in reducing friction. The cover plate and the tub 101 are made of acryl material, and the center support shaft 206 is made of metal. The pendulum mass block 103 is made of copper metal, and a round hole is formed at the smaller end of the pendulum mass block, the central support shaft 206 penetrates through the round hole and is adhered to the pendulum to form a whole, and the pendulum mass block do not move relatively in the movement process. The one-way bearing 205 is embedded in a circular hole reserved in the middle of the fan blade 204 and is sleeved on the central support shaft 206. The outer ring is fixed with fan blades 204, and the inner ring is fixed with a central support shaft 206.
As shown in fig. 2 and 3, the electrode array 102 is composed of 12 rectangular copper foils, the length of the copper foils is slightly less than the height of the outer cylinder 101, and the copper foils are adhered to the inner surface of the outer cylinder 101 at equal intervals. Two adjacent electrodes are respectively led out by leads to be used as an electrode 1 and an electrode 2. The outer tub 101 is made of an acryl material. As shown in fig. 2 and 4, the flexible blade array 201 is composed of 6 teflon films, the length of the film is slightly smaller than the height of the outer cylinder 101, one end of the film is adhered to the support plate 202 of the fan blade 204, and the other end of the film is in flexible contact with the electrode in the rotation process of the fan blade 204, so that friction power generation is formed. The fan blades 204 and the supporting plate 202 are made of acrylic materials.
The electricity generation permanent magnet array 203 is composed of 6 cylindrical magnets, is made of neodymium iron boron materials and is embedded in the middle of the fan blade 204. The coil array 302 is composed of 6 coils wound by copper enameled wires, is uniformly adhered to the inner side surface of the right end cover 303, and is exactly corresponding to the power generation permanent magnet arrays 203 one by one. In the rotation process of the fan blade 204, the permanent magnet and the coil do cutting magnetic induction line motion to form electromagnetic power generation.
When the device is fixed on the wrist, ankle or the like of a human body or on the sea, along with external motion excitation, the pendulum 103 inside the generator reciprocates under the action of gravity or inertia to drive the central support shaft 206 to rotate (alternate clockwise and counterclockwise) and simultaneously drive the one-way bearing 205 and the fan blade 204 (i.e., the rotor) to rotate clockwise, and due to the action of the gravity and inertia of the rotor, even if the central support shaft 206 stops or rotates in the opposite direction, the rotor can still keep rotating in the original direction for a certain time. In the process, the flexible blade array 201 is in flexible contact friction with the electrode array 102, when the polytetrafluoroethylene film is in friction with the copper foil, induced charges are generated, and due to the difference of induced electromotive force between the electrode 1 and the electrode 2, the charges are transferred between the two through an external circuit to form continuous alternating current. Meanwhile, the permanent magnet array 203 and the coil 302 form a rotary electromagnetic generator, and the coil continuously outputs alternating current. Therefore, the conversion from low frequency to high frequency is realized, and the output power of the collector is improved.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (5)
1. A rotary pendulum electromagnetic-friction hybrid generator, comprising: the power generation device comprises a friction power generation unit, an electromagnetic power generation unit, a power unit and a rotating blade unit;
urceolus, electrode array and coil array constitute the stator, and one-way bearing, flabellum, electricity generation permanent magnet array and flexible vane array constitute the rotor, wherein:
the friction power generation unit includes: the electrode array is fixed on the inner wall of the outer barrel; the flexible blade array is connected with the fan blades, rotates along with the rotating blades and is in contact with the electrode array;
the electromagnetic power generation unit includes: the fan comprises a permanent magnet array and a coil array, wherein the permanent magnet array is embedded in a fan leaf and rotates along with the fan leaf, the coil array is fixed on a cover plate at the right end, and the number of coils is the same as that of the permanent magnets;
the power unit includes: the pendulum mass block is made of metal materials of tungsten or copper, is fixed with the central supporting shaft, and is excited by external mechanical motion, and the pendulum generates reciprocating motion under the action of gravity or inertia to drive the central supporting shaft to rotate, namely, the pendulum mass block alternates clockwise and anticlockwise;
the rotary blade unit includes: the fan blade assembly comprises fan blades and a one-way bearing, wherein the one-way bearing can freely rotate in one direction, and is in a locked state in the other direction, which is assumed to be clockwise, the one-way bearing is embedded in the center of the fan blades and sleeved on a central supporting shaft, an outer ring is fixed with the fan blades, and an inner ring is fixed with the central supporting shaft; when the central supporting shaft rotates clockwise, the one-way bearing and the fan blades, namely the rotor, are driven to rotate clockwise, and due to the action of the gravity and the inertia of the rotor, even if the central supporting shaft stops or rotates in the opposite direction, the rotor can still keep rotating in the original direction for a certain time.
2. The rotating pendulum type electromagnetic-friction hybrid generator according to claim 1, wherein the magnets in the permanent magnet array are cylinders made of neodymium iron boron; the coil array is uniformly distributed on the right end cover plate and corresponds to the permanent magnet array.
3. The rotary pendulum type electromagnetic-friction composite generator according to claim 1, wherein the electrode array is uniformly distributed on the inner side surface of the outer cylinder, the number of the electrode array is even, all the electrodes are connected in series to form an electrode 1 and an electrode 2, and two adjacent electrodes are respectively located on the electrode 1 and the electrode 2;
the two electrodes are made of conductive metal material copper foil.
4. The rotary pendulum type electromagnetic-friction composite generator according to claim 1, wherein one end of the flexible blade array is affixed to a support plate on the surface of the blade, and the other end is in flexible contact with the electrode array;
the flexible blades are rectangular, the number of the flexible blades is half of the number of the electrodes, and the flexible blades are made of polytetrafluoroethylene film materials.
5. The rotary pendulum type electromagnetic-friction composite generator according to claim 1, wherein the generator is integrally formed in a cylindrical shape, the left end cover plate and the right end cover plate are circular flat plates, both ends of the outer cylinder are closed, a circular hole is formed in the center of each of the left end cover plate and the right end cover plate, and a bearing is embedded in each of the circular holes and connected with the central support shaft;
the left end cover plate, the right end cover plate and the outer barrel are made of acrylic, and the central supporting shaft is made of metal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010529948.1A CN111600438A (en) | 2020-06-11 | 2020-06-11 | Rotary pendulum type electromagnetic-friction composite generator |
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| CN202010529948.1A CN111600438A (en) | 2020-06-11 | 2020-06-11 | Rotary pendulum type electromagnetic-friction composite generator |
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Cited By (7)
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| CN112564540A (en) * | 2020-12-02 | 2021-03-26 | 湘潭大学 | Adaptive rolling nano friction generator |
| CN113267750A (en) * | 2021-04-16 | 2021-08-17 | 重庆邮电大学 | Wind power plant radar interference suppression system based on intelligent information modulation surface |
| CN113364346A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | Parasitic turbine generator |
| CN114069963A (en) * | 2021-11-19 | 2022-02-18 | 国网四川省电力公司电力科学研究院 | Wind-driven composite self-energy supply device for transmission tower |
| CN114483423A (en) * | 2022-01-29 | 2022-05-13 | 中国海洋大学 | Bistable friction electrification wave power generation device |
| CN114877918A (en) * | 2022-05-16 | 2022-08-09 | 中北大学 | Integrated self-powered sensing device |
| CN115276462A (en) * | 2022-08-18 | 2022-11-01 | 北京纳米能源与系统研究所 | Compound generator for collecting wave energy based on friction power generation and electromagnetic power generation |
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Application publication date: 20200828 |