AU2015208446B2 - Multi-mode vibration power generator - Google Patents
Multi-mode vibration power generator Download PDFInfo
- Publication number
- AU2015208446B2 AU2015208446B2 AU2015208446A AU2015208446A AU2015208446B2 AU 2015208446 B2 AU2015208446 B2 AU 2015208446B2 AU 2015208446 A AU2015208446 A AU 2015208446A AU 2015208446 A AU2015208446 A AU 2015208446A AU 2015208446 B2 AU2015208446 B2 AU 2015208446B2
- Authority
- AU
- Australia
- Prior art keywords
- permanent magnet
- holder
- piezoelectric
- bistable
- coil
- 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.)
- Ceased
Links
- 238000010248 power generation Methods 0.000 claims abstract description 25
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000001846 repelling effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
- H10N30/304—Beam type
- H10N30/306—Cantilevers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
A multi-mode vibration power generator, comprising a bistable piezoelectric cantilever beam and an auxiliary structure. One end of the bistable piezoelectric cantilever beam is fixed, a piezoelectric layer is adhered to the root of a base layer, and a lead wire leads out from the surface of the piezoelectric layer and from the surface of the base layer, respectively. The free end of the bistable piezoelectric cantilever beam is adhered to a permanent magnet I. A permanent magnet II is disposed opposite the permanent magnet I. The permanent magnet I and the permanent magnet II are mutually repelling. The permanent magnet II is supported by a horizontally disposed spring, the other end of the spring being fixed. Both the permanent magnet I and the permanent magnet II are flanked by supports and coils, the supports being fixedly disposed and the coils being wound around the supports. The present invention effectively marries piezoelectric power generation with electromagnetic power generation, thereby significantly increasing the overall mechanical power conversion efficiency of a structure and greatly enhancing the power generation capabilities of a system.
Description
_Descriptions_ A multi-mode vibration power generation device
Technical Field
The invention includes a multi-mode vibration power generation device, it combines piezoelectric power generation and electromagnetic power generation efficiently and belongs to the area of green energy utilization.
Background Art
With the development of technology and continuous exploration for new energy, as a new energy technology, piezoelectric power generation is becoming a hotspot as a new energy technology. Traditional battery has drawbacks such as shorter life, frequently change and limited energy preservation, especially in some special conditions, changing battery is complicated and polluted. Mechanism energy in the form of vibration in nature environment is converted into electricity which can avoid environmental pollution while at the same time it provides power for low power consumption electric device.
Electromagnetic power generation generates electricity through wire cutting magnetic line, this is a classical power generation method. Combine piezoelectric power generation and electromagnetic power generation will improve electromechanical conversion efficiency significantly. Therefore, it is necessary to combine these two power generation methods to increase generating capacity and broaden its’ valid working frequency domain.
Vibration energy exists in nature environment is fully used by multi-mode piezoelectric power generation structure, it has strong applicability. There were a little patents applied about piezoelectric power generation in the world and no patent application about combining bistable piezoelectric power generation and power generation by wire cutting magnetic line to improve generating capacity. Chinese patent (CN104377993A) disclosed an auto-parameter adjustment piezoelectric power generation structure, in the invention, the distance between two permanent magnets can free adjust during vibration process of piezoelectric cantilever beam by adding spring. The power generation capacity is highly improved. Chinese patent (CN101764531A) disclosed a multi-working modal piezoelectric power generator. It integrates piezoelectric components which are working under stretching modal, compression modal and shocking modal on different locations of the power generator. When the generator vibrates up and down, power is generated by knocking, stretching or compressing of the piezoelectric plate. American patent (WO2010151738A3) disclosed a bistable piezoelectric cantilever beam power generator, the _Descriptions_ resonance frequency band of cantilever beam is broadened efficiently, but the broaden degree is limited.
Contents of the invention
To improve the conversion efficiency between vibration mechanism energy and electric energy, the invention discloses a multi-mode vibration power generation device. It combines piezoelectric power generation and electromagnetic power generation which are complementary and mutual promotion. Piezoelectric beam is deformed to generate electric power under the condition of external excitation. During the vibration process of piezoelectric beam, two permanent magnets begin to move that makes magnetic line cutting by coil to generate electric power.
To reach the goals above, the technic schema used in the invention is a multi-mode vibration power generation device, including a bistable piezoelectric cantilever beam and its’ auxiliary structure. Bistable piezoelectric cantilever beam including: lead wire 1, piezoelectric layer 2, substrate 3, holder 14, coil 15, permanent magnet 18; auxiliary structure including: coil 116, spring 7, permanent magnet 119, holder 1110; one end of the bistable piezoelectric cantilever beam is immobilized, piezoelectric layer 2 is pasted on one end of substrate 3, lead wire 1 is extended from top surface of piezoelectric layer 2 and substrate 3 surface respectively; the other end of bistable piezoelectric cantilever beam is free end, permanent magnet 18 is pasted on free end; permanent magnet 119 is placed opposite to permanent magnet 18; permanent magnet 18 and permanent magnet 119 are mutually exclusive. Permanent magnet 119 connects with one end of the spring 7 and supported by horizontal placed spring 7, the other end of spring 7 is immobilized.
There exists an internal space between permanent magnet 18 and permanent magnet 119 which maintains the bistable movement of bistable piezoelectric cantilever beam under small excited vibration.
Holder 14 is harnessed on the external of permanent magnet 18, coil 15 is tied on the external of holder 14; holder 1110 is harnessed on the external of permanent magnet 119, coil 116 is tied on the external of holder II10;
One end of holder 14 and holder 1110 is immobilized, the other end is free.
Coil 15 is tied on surface of holder 14 in the form of multi-layer binding which means that binding begins from one end of holder 14, then along surface to the other end of holder 14, at last reverse to the former end, circulate this process ; coil 116 is tied on surface of holder II10 in the form of multi-layer binding which means that binding begins from one end of holder II10, then along _Descriptions_ surface to the other end of holder II10, at last reverse to the former end, circulate this process.
There exists an internal space between holder 14 and permanent magnet 18. There exists an internal space between holder II10 and permanent magnet 119.
Material of piezoelectric layer 2 is PZT or polarized PVDF.
Materials of substrate 3 are: Cu, steel, Al or Al alloy.
Drawings of the Descriptions
Fig 1 structure diagram of the invention
In Fig 1: 1-Fead wire 2- piezoelectric layer 3- substrate
4- holder I 5- coil I 6- coil II
7-spring 8- permanent magnet I 9- permanent magnet II
10- holder II
Description of the preferred embodiments
The invention will be described in more detail accompanied with the preferred embodiments.
As is shown in Fig 1, a multi-mode vibration power generation device comprising: a bistable piezoelectric cantilever beam and its’ auxiliary structure. Bistable piezoelectric cantilever beam including: lead wire 1, piezoelectric layer 2, substrate 3, holder 14, coil 15, permanent magnet 18; auxiliary structure including: coil 116, spring 7, permanent magnet 119, holder 1110; one end of the bistable piezoelectric cantilever beam is immobilized, piezoelectric layer 2 is pasted on one end of substrate 3, lead wire 1 is extended from top surface of piezoelectric layer 2 and substrate 3 surface respectively; the other end of bistable piezoelectric cantilever beam is free end, permanent magnet 18 is pasted on free end; permanent magnet 119 is placed opposite to permanent magnet 18; permanent magnet 18 and permanent magnet 119 are mutually exclusive. Permanent magnet 119 connects with one end of the spring 7 and supported by horizontal placed spring 7, the other end of spring 7 is immobilized.
There exists an internal space between permanent magnet 18 and permanent magnet 119 which maintains the bistable movement of bistable piezoelectric cantilever beam under small excited vibration.
Holder 14 is harnessed on the external of permanent magnet 18, coil 15 is tied on the external of holder 14; holder 1110 is harnessed on the external of permanent magnet 119, coil 116 is tied on the external of holder II10; _Descriptions_
One end of holder 14 and holder 1110 is immobilized, the other end is free.
Coil 15 is tied on surface of holder 14 in the form of multi-layer binding which means that binding begins from one end of holder 14, then along surface to the other end of holder 14, at last reverse to the former end, circulate this process; coil 116 is tied on surface of holder 1110 in the form of multi-layer binding, it means that binding begins from one end of holder II10, then along surface to the other end of holder 1110, at last reverse to the former end, circulate this process.
There exists an internal space between holder 14 and permanent magnet 18. There exists an internal space between holder II10 and permanent magnet 119.
Material of piezoelectric layer 2 is PZT or polarized PVDF.
Materials of substrate 3 are: Cu, steel, Al or Al alloy.
Even though the invention have been described with the preferred drawings, but the invention is not limited with the embodiment mentioned above. The embodiment is just a ostentation example, but not a limited one, many transformations can be made by according the rules of the invention, these transformations all belongs to the protection category of the invention.
Claims (2)
- Claims1. A multi-mode vibration power generation device comprising: a bistable piezoelectric cantilever structure including a lead wire, a piezoelectric layer, a substrate, a first holder, a first coil and a first permanent magnet; and an auxiliary structure including a second coil, a spring, a second permanent magnet and a second holder; wherein one end of the bistable piezoelectric cantilever structure is immobilized, the piezoelectric layer is pasted on one end of the substrate, the lead wire is extended from top surface of the piezoelectric layer and the substrate surface respectively; wherein the other end of the bistable piezoelectric cantilever structure is a free end, the first permanent magnet is pasted on the free end, the second permanent magnet is placed opposite to the first permanent magnet and the first permanent magnet and second permanent magnet are mutually exclusive; wherein the second permanent magnet connects with one end of the spring and is supported by the spring, which is horizontal placed, the wherein the other end of the spring is immobilized; wherein there exists an internal space between the first permanent magnet and the second permanent magnet, which maintains the bistable movement of bistable piezoelectric cantilever structure under small excited vibration; wherein the first holder is harnessed on the outside of the first permanent magnet, the first coil is tied on the outside of the first holder, the second holder is harnessed on the outside of the second permanent magnet and the second coil is tied on the outside of the second holder; wherein one end of both the first holder and the second holder is immobilized, the other end of both the first holder and the second holder is free.
- 2. A device according to claim 1 wherein the first coil is tied on a surface of the first holder in the form of multi-layer binding in which binding begins from one end of the first holder, then along the surface to the other end of the first holder, reverses to the former end and circulates this process; and wherein the second coil is tied on a surface of the second holder in the form of multi-layer binding in which binding begins from one end of the second holder, then along the surface to the other end of the second holder, reverses to the former end and circulates this process.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191784.5 | 2015-04-22 | ||
| CN201510191784.5A CN104821743A (en) | 2015-04-22 | 2015-04-22 | Multi-mode vibration power generation device |
| PCT/CN2015/077888 WO2015110093A2 (en) | 2015-04-22 | 2015-04-30 | Multi-mode vibration power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2015208446A1 AU2015208446A1 (en) | 2017-01-12 |
| AU2015208446B2 true AU2015208446B2 (en) | 2018-11-29 |
Family
ID=53682059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015208446A Ceased AU2015208446B2 (en) | 2015-04-22 | 2015-04-30 | Multi-mode vibration power generator |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104821743A (en) |
| AU (1) | AU2015208446B2 (en) |
| WO (1) | WO2015110093A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11342827B2 (en) * | 2017-08-28 | 2022-05-24 | Tiangong University | Four-sided-synchronous-swing dual-mode broadband power generation device |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102009992B1 (en) * | 2012-11-30 | 2019-08-12 | 삼성전자주식회사 | Energy harvesting device |
| CN105141181B (en) * | 2015-10-08 | 2018-02-02 | 北京理工大学 | A kind of piezoelectricity electromagnetism combined type energy accumulator |
| 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 |
| CN105634331B (en) * | 2016-03-17 | 2017-09-29 | 西安陆洲智能传感技术有限公司 | A kind of magnetoelectricity piezoelectricity combines generator |
| CN105932908B (en) * | 2016-06-15 | 2017-10-10 | 浙江师范大学 | A kind of boat-carrying locating and tracking system electric supply installation |
| CN106124036B (en) * | 2016-08-17 | 2019-06-07 | 西南交通大学 | A kind of novel vibration pickup and its optimum design method |
| CN106602928A (en) * | 2016-10-28 | 2017-04-26 | 江苏金米智能科技有限责任公司 | Portable self-powered positioning device based on IOT (Internet of Things) |
| CN106549625B (en) * | 2016-12-08 | 2018-12-28 | 清华大学 | A kind of composite pavement energy collecting device |
| CN106941308B (en) * | 2017-04-13 | 2024-01-30 | 四川易尚天交实业有限公司 | Energy acquisition device based on vibration effect |
| CN106899233B (en) * | 2017-04-14 | 2018-10-02 | 合肥工业大学 | A kind of Reed type bistable electromagnetic Piezoelectric anisotropy energy collecting 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 |
| CN107508495A (en) * | 2017-08-28 | 2017-12-22 | 北京工业大学 | A kind of piezoelectricity electromagnetic vibration power generation device |
| CN108111058B (en) * | 2018-01-08 | 2019-04-16 | 河海大学 | A kind of modified piezoelectric cantilever vortex-induced vibration power generator |
| CN110299864B (en) * | 2019-05-19 | 2023-06-30 | 北京工业大学 | Piezoelectric-electrostatic composite energy harvester device based on collision |
| CN111355355B (en) * | 2020-04-07 | 2021-04-27 | 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 |
| CN112202309B (en) * | 2020-09-29 | 2022-11-29 | 长春工业大学 | Transverse telescopic electromagnetic composite power generation device |
| CN113791698A (en) * | 2021-09-14 | 2021-12-14 | 哈尔滨工程大学 | Wireless mouse with combined type power generation facility |
| CN113778243A (en) * | 2021-09-14 | 2021-12-10 | 哈尔滨工程大学 | Self-powered wireless mouse with micro-energy collecting device |
| 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 |
| CN114542368B (en) * | 2022-02-21 | 2024-01-23 | 国家海洋技术中心 | Wave energy collection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090261689A1 (en) * | 2008-04-22 | 2009-10-22 | Honeywell International Inc. | System and method for providing a piezoelectric electromagnetic hybrid vibrating energy harvester |
| US20110140577A1 (en) * | 2009-06-19 | 2011-06-16 | The Regents Of The University Of Michigan | Increased frequency power generation using low-frequency ambient vibrations |
| US20110215590A1 (en) * | 2007-09-18 | 2011-09-08 | University Of Florida Research Foundation, Inc. | Dual-Mode Piezoelectric/Magnetic Vibrational Energy Harvester |
| CN103354434A (en) * | 2013-07-02 | 2013-10-16 | 天津大学 | Bistable piezoelectric cantilever beam vibration energy collector |
| EP2662971A1 (en) * | 2011-04-07 | 2013-11-13 | Murata Manufacturing Co., Ltd. | Piezoelectric power generator |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010151738A2 (en) * | 2009-06-26 | 2010-12-29 | Virginia Tech Intellectual Properties, Inc. | Piezomagnetoelastic structure for broadband vibration energy harvesting |
| CN101764531B (en) * | 2010-01-28 | 2012-05-16 | 南京航空航天大学 | Multi-operation mode piezoelectric generator and power generation method thereof |
| CN102185523A (en) * | 2011-05-30 | 2011-09-14 | 华北电力大学 | Minitype composite vibration power generator |
| CN102790548B (en) * | 2012-07-18 | 2015-01-21 | 天津大学 | Bistable composite cantilever beam piezoelectric power generating device |
| CN103023377B (en) * | 2012-12-24 | 2017-05-03 | 成都理工大学 | Piezoelectric and electromagnetic hybrid variable-frequency micro-power generation assembly and method for same |
| CN104253563B (en) * | 2014-09-24 | 2017-02-22 | 北京工业大学 | Method for improving power generation capacity of bistable suspension beam piezoelectric power generation device |
| CN104377993A (en) * | 2014-11-25 | 2015-02-25 | 北京工业大学 | Automatic parameter regulating bistable-state piezoelectric power generation structure |
-
2015
- 2015-04-22 CN CN201510191784.5A patent/CN104821743A/en active Pending
- 2015-04-30 AU AU2015208446A patent/AU2015208446B2/en not_active Ceased
- 2015-04-30 WO PCT/CN2015/077888 patent/WO2015110093A2/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110215590A1 (en) * | 2007-09-18 | 2011-09-08 | University Of Florida Research Foundation, Inc. | Dual-Mode Piezoelectric/Magnetic Vibrational Energy Harvester |
| US20090261689A1 (en) * | 2008-04-22 | 2009-10-22 | Honeywell International Inc. | System and method for providing a piezoelectric electromagnetic hybrid vibrating energy harvester |
| US20110140577A1 (en) * | 2009-06-19 | 2011-06-16 | The Regents Of The University Of Michigan | Increased frequency power generation using low-frequency ambient vibrations |
| EP2662971A1 (en) * | 2011-04-07 | 2013-11-13 | Murata Manufacturing Co., Ltd. | Piezoelectric power generator |
| CN103354434A (en) * | 2013-07-02 | 2013-10-16 | 天津大学 | Bistable piezoelectric cantilever beam vibration energy collector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11342827B2 (en) * | 2017-08-28 | 2022-05-24 | Tiangong University | Four-sided-synchronous-swing dual-mode broadband power generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2015208446A1 (en) | 2017-01-12 |
| WO2015110093A3 (en) | 2016-03-03 |
| WO2015110093A2 (en) | 2015-07-30 |
| CN104821743A (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2015208446B2 (en) | Multi-mode vibration power generator | |
| Chu et al. | Dual-stimulus magnetoelectric energy harvesting | |
| US7928634B2 (en) | System and method for providing a piezoelectric electromagnetic hybrid vibrating energy harvester | |
| CN107508496A (en) | With the mutual bistable state multimode vibration generating device of auxiliary magnetic | |
| WO2005069959A3 (en) | Method and micro power generator for generating electrical power from low frequency vibrational energy | |
| US9065045B2 (en) | Apparatus for harvesting electrical power from mechanical energy | |
| US9484523B2 (en) | Bistable piezoelectric cantilever vibration energy generator based on spherical composite structure and partial separation of different layers | |
| Liu et al. | A new figure of merit for wideband vibration energy harvesters | |
| CN107508495A (en) | A kind of piezoelectricity electromagnetic vibration power generation device | |
| CN105226994A (en) | Multifrequency coupled vibrations energy capture device | |
| US11342827B2 (en) | Four-sided-synchronous-swing dual-mode broadband power generation device | |
| CN105680720A (en) | Multi-degree-of-freedom piezoelectric-electromagnetic composite multi-directional broadband kinetic energy collector | |
| CN108631538B (en) | Vibration energy recovery device for combined energy collection of permanent magnet and giant magnetostrictive rod | |
| CN104270032A (en) | Bistable state spherical surface composite cantilever piezoelectric power generation device | |
| US20220123671A1 (en) | Vibration power generation device | |
| CN104377993A (en) | Automatic parameter regulating bistable-state piezoelectric power generation structure | |
| CN205249083U (en) | Low frequency vibration electromagnetic energy collector | |
| CN106160575B (en) | A kind of low frequency magnetic field energy collecting device using Piezoelectric anisotropy tuning fork | |
| CN105811805A (en) | Miniature generator based on train bogie railway vibrational energy collection | |
| CN104767346A (en) | Electromagnetic type vibration energy collector based on Halbach array | |
| CN106877740A (en) | Combined type energy accumulator | |
| CN110707894B (en) | Vibration energy collector based on multiple magnetic phase change alloys | |
| KR101286714B1 (en) | Piezoelectric energy harvesting device | |
| KR101025562B1 (en) | Generator module using acoustic energy or vibration energy | |
| CN116169850A (en) | Combined type energy collector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |