CN104821743A - Multi-mode vibration power generation device - Google Patents

Multi-mode vibration power generation device Download PDF

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Publication number
CN104821743A
CN104821743A CN201510191784.5A CN201510191784A CN104821743A CN 104821743 A CN104821743 A CN 104821743A CN 201510191784 A CN201510191784 A CN 201510191784A CN 104821743 A CN104821743 A CN 104821743A
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CN
China
Prior art keywords
permanent magnet
bracket
coil
spring
mode vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510191784.5A
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Chinese (zh)
Inventor
姚明辉
李印波
张伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Technology
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Beijing University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN201510191784.5A priority Critical patent/CN104821743A/en
Priority to AU2015208446A priority patent/AU2015208446B2/en
Priority to PCT/CN2015/077888 priority patent/WO2015110093A2/en
Publication of CN104821743A publication Critical patent/CN104821743A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K35/00Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/02Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/186Vibration harvesters
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10NELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00Piezoelectric or electrostrictive devices
    • H10N30/30Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
    • H10N30/304Beam type
    • H10N30/306Cantilevers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator

Abstract

A multi-mode vibration power generation device. The device includes a bistable piezoelectric cantilever beam and an accessory structure; and one end of the bistable piezoelectric cantilever beam is fixed, a piezoelectric layer is pasted on the root of a base layer, and a lead is led out from an upper surface of the piezoelectric layer and a surface of the base layer. A permanent magnet I is pasted on a free end of the bistable piezoelectric cantilever beam, a permanent magnet II is placed opposite to the permanent magnet I, the permanent magnet I and the permanent magnet II are in mutual repulsion, the permanent magnet II is supported through a spring which is horizontally placed, and the other end of the spring is fixed. A support and a coil sleeve the outside of the permanent magnet I and the permanent magnet II respectively, the support is fixedly placed, and the coil is wound on the support. The multi-mode vibration power generation device provided by the invention effectively combines piezoelectric power generation with electromagnetic power generation, greatly improves overall electro-mechanical transformation efficiency of a structure, and greatly enhances the power generation capacity of a system.

Description

A kind of multi-mode vibration generating device
Technical field
The present invention relates to a kind of multi-mode vibration generating device, effectively piezo-electric generating can be combined with Electromagnetic generation, belong to green energy resource and utilize field.
Background technology
Progress along with science and technology and the continuous exploration for new forms of energy, piezo-electric generating technology, as a new energy technology, obtains the concern of people just day by day.Traditional powered battery mode also exist the life-span short, need shortcomings such as often changing, storage power is limited, and it is complicated to change cell process under certain conditions, also pollutes the environment.Be electric energy by the changes mechanical energy of vibration mode in natural environment, both can avoid contaminated environment, again can effectively for low-power consumption electrical appliance be powered.Electromagnetic generation produces electric energy by wire cutting magnetic induction line, and this is a kind of very classical generation mode, Electromagnetic generation is combined the electromechanical conversion efficiency that effectively can increase system with piezo-electric generating.Therefore, utilize the combination of two kinds of generation modes to be necessary, its energy output can be increased, widen its frequency domain that effectively works.
Vibrational energy in natural environment can be used by multi-mode piezoelectric electrification structure fully, its application is very strong, relatively less about the patent of piezo-electric generating both at home and abroad, generate electricity the patent that combines and strengthen generating capacity temporarily and nobody applies for about bistable state piezo-electric generating and coil cutting magnetic induction line.Chinese patent (publication number CN104377993A) discloses a kind of automatically tune and joins piezo-electric generating structure, this invention is by increasing spring, make piezoelectric cantilever in vibration processes, the distance between two permanent magnets can free adjustment, and great improves generating effect.Chinese patent (publication number CN101764531A) discloses a kind of multi-operation mode piezoelectric generator, will be operated in tension and compression mode and be operated in the different parts that the piezoelectric element impacting mode is integrated in piezoelectric generator.When generator up-down vibration, piezoelectric patches or because knocking or producing electric energy because of Tension and Compression.United States Patent (USP) (publication number WO2010151738A3) discloses a kind of bistable state piezoelectric cantilever generators, has effectively widened the resonance bands of cantilever beam, but the degree of bandwidth broadning is not very large.
Summary of the invention
In order to effectively increase the conversion efficiency between the mechanical energy of vibration mode and electric energy, the invention provides a kind of multi-mode vibration generating device, combined with Electromagnetic generation by piezo-electric generating, the two supplements mutually, mutually promotes.Outside under incentive action, piezoelectric beam generation deformation produces electric energy.In the process of vibration of piezoelectric beam, two blocks of permanent magnets all produce motion, make coil cutting magnetic induction line produce electric energy.
For achieving the above object, the technical solution used in the present invention is a kind of multi-mode vibration generating device, and this device comprises bistable state piezoelectric cantilever, accessory structure; Bistable state piezoelectric cantilever comprises lead-in wire 1, piezoelectric layer 2, basic unit 3, bracket I 4, coil I5, permanent magnet I8; Accessory structure comprises coil II6, spring 7, permanent magnet II9, bracket I I10; One end of described bistable state piezoelectric cantilever is fixed, and piezoelectric layer 2 is pasted onto one end of basic unit 3, and lead-in wire 1 is drawn respectively from piezoelectric layer 2 upper surface and basic unit 3 surface; The other end of described bistable state piezoelectric cantilever is free end, and free end is pasted with permanent magnet I8, with permanent magnet I8 staggered relatively be permanent magnet II9, permanent magnet I8 and permanent magnet II9 repels mutually; Permanent magnet II9 is connected with one end of spring 7 and is supported by the spring 7 of horizontal positioned, and spring 7 other end is fixed.
There is certain interval between described permanent magnet I8 and permanent magnet II9, bistable state piezoelectric cantilever can be made under little excited vibration to keep bistable motion.
The outside cover of described permanent magnet I8 has bracket I 4, and the outer felt of bracket I 4 has coil I5; The outside cover of described permanent magnet II9 has bracket I I10, and the outer felt of bracket I I10 has coil II6;
One end of described bracket I 4, bracket I I10 is fixed, and the other end freely.
Described coil I5 is wrapped in the surface of bracket I 4, adopts the mode of multi-lay winding, from one end of bracket I 4 around bracket I 4 surface wrap, arrives again towards original one ends wound after the other end of bracket I 4, and so forth; Described coil II10 is wrapped in the surface of bracket I I10, adopts the mode of multi-lay winding, from one end of bracket I I10 around bracket I I10 surface wrap, arrives again towards original one ends wound after the other end of bracket I I10, and so forth.
There is certain interval between described bracket I 4 and permanent magnet I8, between bracket I I10 and permanent magnet II9, there is certain interval.
The material of described piezoelectric layer 2 is PZT or the PVDF after polarizing.
The material of described basic unit 3 is copper, steel, aluminium, aluminium alloy one wherein.
Compared with prior art, the invention has the beneficial effects as follows:
Bistable state piezo-electric generating and Electromagnetic generation supplement by this device mutually, the motion that can make full use of two blocks of permanent magnets produces additional electrical energy, the present invention can regulate bistable motion degree and cutting magnetic induction line degree in the course of the work constantly automatically, effectively can promote electromechanical conversion efficiency, strengthen generating capacity.
Accompanying drawing explanation
Fig. 1 is the structural representation of invention;
In figure:
1-lead-in wire 2-piezoelectric layer 3-basic unit
4-bracket I 5-coil I 6-coil II
7-spring 8-permanent magnet I 9-permanent magnet II
10-bracket I I
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
As shown in Figure 1, a kind of multi-mode vibration generating device, this device comprises bistable state piezoelectric cantilever, accessory structure; Bistable state piezoelectric cantilever comprises lead-in wire 1, piezoelectric layer 2, basic unit 3, bracket I 4, coil I5, permanent magnet I8; Accessory structure comprises coil II6, spring 7, permanent magnet II9, bracket I I10; One end of described bistable state piezoelectric cantilever is fixed, and piezoelectric layer 2 is pasted onto one end of basic unit 3, and lead-in wire 1 is drawn respectively from piezoelectric layer 2 upper surface and basic unit 3 surface; The other end of described bistable state piezoelectric cantilever is free end, and free end is pasted with permanent magnet I8, with permanent magnet I8 staggered relatively be permanent magnet II9, permanent magnet I8 and permanent magnet II9 repels mutually; Permanent magnet II9 is connected with one end of spring 7 and is supported by the spring 7 of horizontal positioned, and spring 7 other end is fixed.
There is certain interval between described permanent magnet I8 and permanent magnet II9, bistable state piezoelectric cantilever can be made under little excited vibration to keep bistable motion.
The outside cover of described permanent magnet I8 has bracket I 4, and the outer felt of bracket I 4 has coil I5; The outside cover of described permanent magnet II9 has bracket I I10, and the outer felt of bracket I I10 has coil II6;
One end of described bracket I 4, bracket I I10 is fixed, and the other end freely.
Described coil I5 is wrapped in the surface of bracket I 4, adopts the mode of multi-lay winding, from one end of bracket I 4 around bracket I 4 surface wrap, arrives again towards original one ends wound after the other end of bracket I 4, and so forth; Described coil II10 is wrapped in the surface of bracket I I10, adopts the mode of multi-lay winding, from one end of bracket I I10 around bracket I I10 surface wrap, arrives again towards original one ends wound after the other end of bracket I I10, and so forth.
There is certain interval between described bracket I 4 and permanent magnet I8, between bracket I I10 and permanent magnet II9, there is certain interval.
The material of described piezoelectric layer 2 is PZT or the PVDF after polarizing.
The material of described basic unit 3 is copper, steel, aluminium, aluminium alloy one wherein.
Although invention has been described for composition graphs above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; when not departing from present inventive concept; can also make a lot of distortion, these all belong to protection category of the present invention.

Claims (5)

1. a multi-mode vibration generating device, is characterized in that: this device comprises bistable state piezoelectric cantilever, accessory structure; Bistable state piezoelectric cantilever comprises lead-in wire (1), piezoelectric layer (2), basic unit (3), bracket I (4), coil I (5), permanent magnet I (8); Accessory structure comprises coil II (6), spring (7), permanent magnet II (9), bracket I I (10); One end of described bistable state piezoelectric cantilever is fixed, and piezoelectric layer (2) is pasted onto one end of basic unit (3), and lead-in wire (1) is drawn respectively from piezoelectric layer (2) upper surface and basic unit (3) surface; The other end of described bistable state piezoelectric cantilever is free end, free end is pasted with permanent magnet I (8), with permanent magnet I (8) staggered relatively be permanent magnet II (9), permanent magnet I (8) and permanent magnet II (9) repel mutually; Permanent magnet II (9) is connected with one end of spring (7) and is supported by the spring (7) of horizontal positioned, and spring (7) other end is fixed;
There is certain interval between described permanent magnet I (8) and permanent magnet II (9), bistable state piezoelectric cantilever can be made under little excited vibration to keep bistable motion;
The outside cover of described permanent magnet I (8) has bracket I (4), and the outer felt of bracket I (4) has coil I (5); The outside cover of described permanent magnet II (9) has bracket I I (10), and the outer felt of bracket I I (10) has coil II (6);
One end of described bracket I (4), bracket I I (10) is fixed, and the other end freely.
2. a kind of multi-mode vibration generating device according to claim 1, it is characterized in that: described coil I (5) is wrapped in the surface of bracket I (4), adopt the mode of multi-lay winding, from one end of bracket I (4) around bracket I (4) surface wrap, again towards original one ends wound after the other end of arrival bracket I (4), and so forth; Described coil II (10) is wrapped in the surface of bracket I I (10), adopt the mode of multi-lay winding, from one end of bracket I I (10) around bracket I I (10) surface wrap, again towards original one ends wound after the other end of arrival bracket I I (10), and so forth.
3. a kind of multi-mode vibration generating device according to claim 1, it is characterized in that: between described bracket I (4) and permanent magnet I (8), there is certain interval, between bracket I I (10) and permanent magnet II (9), there is certain interval.
4. a kind of multi-mode vibration generating device according to claim 1, is characterized in that: the material of described piezoelectric layer (2) is PZT or the PVDF after polarizing.
5. a kind of multi-mode vibration generating device according to claim 1, is characterized in that: the material of described basic unit (3) is copper, steel, aluminium, aluminium alloy one wherein.
CN201510191784.5A 2015-04-22 2015-04-22 Multi-mode vibration power generation device Pending CN104821743A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201510191784.5A CN104821743A (en) 2015-04-22 2015-04-22 Multi-mode vibration power generation device
AU2015208446A AU2015208446B2 (en) 2015-04-22 2015-04-30 Multi-mode vibration power generator
PCT/CN2015/077888 WO2015110093A2 (en) 2015-04-22 2015-04-30 Multi-mode vibration power generator

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Application Number Priority Date Filing Date Title
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CN105932908A (en) * 2016-06-15 2016-09-07 浙江师范大学 Power supply device for shipborne locating and tracking system
CN106124036A (en) * 2016-08-17 2016-11-16 西南交通大学 A kind of novel vibration pickup and Optimization Design thereof
CN106549625A (en) * 2016-12-08 2017-03-29 清华大学 A kind of composite pavement energy collecting device
CN106899233A (en) * 2017-04-14 2017-06-27 合肥工业大学 A kind of Reed type bistable electromagnetic Piezoelectric anisotropy energy collecting device
CN107508495A (en) * 2017-08-28 2017-12-22 北京工业大学 A kind of piezoelectricity electromagnetic vibration power generation device
CN107508496A (en) * 2017-08-28 2017-12-22 北京工业大学 With the mutual bistable state multimode vibration generating device of auxiliary magnetic
WO2019041757A1 (en) * 2017-08-28 2019-03-07 北京工业大学 Four-sided-synchronous-swing dual-mode broadband power generation device
CN110299864A (en) * 2019-05-19 2019-10-01 北京工业大学 Piezoelectricity based on collision-static combined type energy accumulator device
CN111355355A (en) * 2020-04-07 2020-06-30 南京邮电大学 Wearable piezoelectric-electromagnetic composite energy harvesting vibration device
CN112202309A (en) * 2020-09-29 2021-01-08 长春工业大学 Transverse telescopic electromagnetic composite power generation device
CN112234860A (en) * 2020-09-15 2021-01-15 西安交通大学 Electromagnetic piezoelectric combined type multi-axis vibration and swing energy capture device
CN113778243A (en) * 2021-09-14 2021-12-10 哈尔滨工程大学 Self-powered wireless mouse with micro-energy collecting device
CN113791698A (en) * 2021-09-14 2021-12-14 哈尔滨工程大学 Wireless mouse with combined type power generation facility
CN114251336A (en) * 2021-11-05 2022-03-29 湖北塞思博科技有限公司 Preparation method and detection method of cantilever beam structure magnetoelectric antenna and magnetoelectric antenna
CN114268243A (en) * 2021-12-24 2022-04-01 南昌工程学院 Magnetostrictive-electromagnetic combined vibration energy collector

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CN105571803A (en) * 2016-03-13 2016-05-11 北京工业大学 Bistable piezoelectric energy collector vibration experiment clamp
CN105571803B (en) * 2016-03-13 2017-11-24 北京工业大学 A kind of bistable state piezoelectric energy collector vibration experiment fixture
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CN106899233A (en) * 2017-04-14 2017-06-27 合肥工业大学 A kind of Reed type bistable electromagnetic Piezoelectric anisotropy energy collecting device
CN107508495A (en) * 2017-08-28 2017-12-22 北京工业大学 A kind of piezoelectricity electromagnetic vibration power generation device
CN107508496A (en) * 2017-08-28 2017-12-22 北京工业大学 With the mutual bistable state multimode vibration generating device of auxiliary magnetic
WO2019041757A1 (en) * 2017-08-28 2019-03-07 北京工业大学 Four-sided-synchronous-swing dual-mode broadband power generation device
US11342827B2 (en) 2017-08-28 2022-05-24 Tiangong University Four-sided-synchronous-swing dual-mode broadband power generation device
CN110299864A (en) * 2019-05-19 2019-10-01 北京工业大学 Piezoelectricity based on collision-static combined type energy accumulator device
CN110299864B (en) * 2019-05-19 2023-06-30 北京工业大学 Piezoelectric-electrostatic composite energy harvester device based on collision
CN111355355A (en) * 2020-04-07 2020-06-30 南京邮电大学 Wearable piezoelectric-electromagnetic composite energy harvesting vibration device
CN112234860B (en) * 2020-09-15 2022-03-04 西安交通大学 Electromagnetic piezoelectric combined type multi-axis vibration and swing energy capture device
CN112234860A (en) * 2020-09-15 2021-01-15 西安交通大学 Electromagnetic piezoelectric combined type multi-axis vibration and swing energy capture device
CN112202309A (en) * 2020-09-29 2021-01-08 长春工业大学 Transverse telescopic electromagnetic composite power generation device
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CN114268243A (en) * 2021-12-24 2022-04-01 南昌工程学院 Magnetostrictive-electromagnetic combined vibration energy collector

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Application publication date: 20150805