CN104485839A - Piezoelectric type energy harvester - Google Patents
Piezoelectric type energy harvester Download PDFInfo
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- CN104485839A CN104485839A CN201410745707.5A CN201410745707A CN104485839A CN 104485839 A CN104485839 A CN 104485839A CN 201410745707 A CN201410745707 A CN 201410745707A CN 104485839 A CN104485839 A CN 104485839A
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- piezoelectric
- piezoelectric ceramic
- type energy
- diesel engine
- energy accumulator
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Abstract
The invention discloses a piezoelectric type energy harvester used for recycling the vibration energy of a diesel engine. The piezoelectric type energy harvester comprises a barrel pedestal, wherein piezoelectric units are arranged on the barrel pedestal; each piezoelectric unit comprises an annular outer casing; three or five objective tables are uniformly arranged at equal angles on the inner side face of each annular outer casing; a piezoelectric ceramic stack and a limiting baffle plate are arranged on each of the objective tables; the piezoelectric ceramic stacks are respectively of a layered structure formed by stacking piezoelectric ceramic wafers; glands are respectively arranged above the piezoelectric ceramic stacks; the top parts of the glands are respectively provided with a support rod; cantilever beams are respectively arranged above the support rods; the cantilever beams are respectively connected with mass blocks at the centres of the annular outer casings. According to the piezoelectric type energy harvester, the direct piezoelectric effect of piezoelectric ceramic is utilized; as a cantilever beam structure is adopted to harvest the vibration energy of the diesel engine, the harmful vibration is changed into usable electric energy; therefore low-energy-consumption electric appliances on a ship can be supplied with power, and the consumption of fossil fuel is reduced.
Description
Technical field
The present invention relates to a kind of mechanical vibrational energy retracting device, refer to a kind of piezoelectric type energy accumulator especially.
Background technology
As far back as 19 th century later, Ship Vibration problem just attracts much attention, diesel engine is the type that in dynamic power machine, the heat efficiency is the highest, capacity usage ratio is high, the most energy-conservation, have in boats and ships industry and apply comparatively widely, because diesel engine adopts toggle, along with running up of diesel engine, periodically variable uneven force and moment must be produced, vibration also produces thereupon, and long vibrational energy is directly dissipated in air.
Mechanical oscillation change into the method that electric energy adopts generally three kinds: electromagnetic type, electrostatic, piezoelectric type.Piezoelectric type energy accumulator because of structure simple, voltage and power stage density high and receive much concern.Piezoelectric type energy accumulator adopts piezoceramic material that mechanical oscillation are changed into electric energy, and piezoceramic material has excellent stress-electric coupling performance, directly can extract vibrational energy from environment, and convert it into electric energy.
At present, in prior art, nothing utilizes piezoelectric type energy accumulator to reclaim the device of diesel vibration energy temporarily.
Summary of the invention
The object of the present invention is to provide a kind of piezoelectric type energy accumulator for reclaiming diesel vibration energy.
For achieving the above object, piezoelectric type energy accumulator designed by the present invention, comprise for holding piezoelectric type energy accumulator and being fixed in the tubbiness base on the support of diesel engine, described tubbiness base is provided with piezoelectric unit, described piezoelectric unit comprises ring-shaped shell, the first-class even angle of medial surface of described ring-shaped shell is provided with 3 or 5 objective tables, the supporting surface of each objective table is in same level, each objective table is respectively arranged with piezoelectric ceramic stack and the postive stop baffle for limiting piezoelectric ceramic stack position, described piezoelectric ceramic stack is stacked into layer structure by piezoelectric ceramic piece, the gland for compressing piezoelectric ceramic piece is provided with above described piezoelectric ceramic stack, the top center of described gland is vertically installed with pole, cantilever beam is provided with above described pole, described cantilever beam one end is fixed on the inner side of ring-shaped shell, the other end is connected with the mass being arranged on ring-shaped shell center, the quality of described mass can adjust according to actual needs.The profile of piezoelectric type energy accumulator of the present invention can be set to circle or polygon as required.
Further, because piezoelectric ceramic piece is fragile material, for avoiding it to bear non-axial force in piezoelectric ceramic stacked structure and causing impaired, the connection of cantilever beam and pole can adopt chain connection, makes to act on power on piezoelectric ceramic stack all the time along its axis direction.
Further, the piezoelectric unit quantity on described tubbiness base can be set to two and more than, each piezoelectric unit is that stacked in layers is on tubbiness base.Adopt the multilayer effective conserve space of energy accumulator stack manner and improve energy output.Between each lamination electric unit, the stability that screw is fixed to increase device can be set.
Further, described tubbiness base can adopt strong magnets to make, and can remove and install more easily.
The invention has the beneficial effects as follows: (1) utilizes the direct piezoelectric effect of piezoelectric ceramic, cantilever beam structure is adopted to capture the vibrational energy of diesel engine, change harmful vibration into available electric energy, thus be the low power consuming electric power supply on boats and ships, reduce the consumption of fossil fuel; (2) 3 groups or 5 groups of piezoelectric ceramic stacks are angularly set in ring-shaped shell, to arrange piezoelectric ceramic piece as much as possible, just more electric energy can be changed like this in limited space, in addition odd number root cantilever beam can eliminate the internal stress of cantilever beam, reduce pulsation rate, make piezoelectric type energy accumulator keep certain structural stability on the diesel engine vibrating comparatively complexity, increase the service life; (3) diesel engine produces vibration in the process of running, and mass is up-down vibration thereupon, can increase Oscillation Amplitude, reduce vibration frequency, thus improve piezoelectricity transformation efficiency; (4) quantity of electric charge piezoelectric ceramic stack produced is directly proportional to the quantity of piezoelectric ceramic piece, due to piezoelectric ceramic piece do very thin, the quantity of electric charge that piezoelectric ceramic stack produces than the single piezoelectric ceramic piece of condition of equivalent thickness is much bigger, thus improves the energy output of piezoelectric unit; (5) structure of the present invention is simple, and be convenient to dismounting and maintenance, each piezoelectric unit physical dimension is identical, is convenient to replace, and can use in groups.
Accompanying drawing explanation
Fig. 1 is the structural representation improving piezoelectric type energy accumulator.
Fig. 2 is the structural representation that improvement piezoelectric type energy accumulator is installed on diesel engine base.
Fig. 3 is the schematic perspective view of piezoelectric unit in Fig. 1.
Fig. 4 is the plan structure schematic diagram of piezoelectric unit in Fig. 3.
Fig. 5 is that the A-A of the single cantilever beam of piezoelectric unit in Fig. 4 is to cutaway view.
Wherein: diesel engine 1, support 2, piezoelectric type energy accumulator 3, tubbiness base 4, piezoelectric unit 5, ring-shaped shell 6, objective table 7, supporting surface 8, piezoelectric ceramic stack 9, piezoelectric ceramic piece 10, gland 11, pole 12, cantilever beam 13, mass 14, postive stop baffle 15
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 1 ~ 5, the piezoelectric type energy accumulator that the present invention improves comprises tubbiness base 4, and tubbiness base 4 is for holding piezoelectric type energy accumulator 3 and being fixed on the support 2 of diesel engine 1.Tubbiness base 4 is provided with piezoelectric unit 5, piezoelectric unit 5 comprises ring-shaped shell 6, and the first-class even angle of medial surface of ring-shaped shell 6 is provided with three objective tables 7, and the supporting surface 8 of each objective table 7 is in same level.Each objective table 7 is respectively arranged with piezoelectric ceramic stack 9 and the postive stop baffle 15 for limiting piezoelectric ceramic stack 9 position, postive stop baffle 15 is looped around the periphery of piezoelectric ceramic stack 9, and its medial surface is close to the side of piezoelectric ceramic stack 9.Piezoelectric ceramic stack 9 is stacked into layer structure by the piezoelectric ceramic piece 10 of the thin rounded flakes shape of some, the circular cover 11 for compressing piezoelectric ceramic piece 10 is provided with above piezoelectric ceramic stack 9, the top center of gland 11 is vertically installed with pole 12, cantilever beam 13 is provided with above pole 12, cantilever beam 13 one end is fixed on the inner side of ring-shaped shell 6, and the other end is connected with the mass 14 being arranged on ring-shaped shell 6 center.Cantilever beam 13 and pole 12 chain connection.The quantity of the piezoelectric unit 5 that tubbiness base 4 is arranged is 3, is placed in tubbiness base 4 and forms three-decker.Tubbiness base 4 is made up of strong magnets and can be inhaled on the support 2 of diesel engine 1.
Claims (5)
1. a piezoelectric type energy accumulator, for reclaiming the vibrational energy of diesel engine (1), it comprises for holding piezoelectric type energy accumulator (3) and being fixed in the tubbiness base (4) on the support (2) of diesel engine (1), described tubbiness base (4) is provided with piezoelectric unit (5), it is characterized in that:
Described piezoelectric unit (5) comprises ring-shaped shell (6), the first-class even angle of medial surface of described ring-shaped shell (6) is provided with 3 or 5 objective tables (7), the supporting surface (8) of each objective table (7) is in same level, each objective table (7) is respectively arranged with piezoelectric ceramic stack (9) and the postive stop baffle (15) for limiting piezoelectric ceramic stack (9) position, described piezoelectric ceramic stack (9) is stacked into layer structure by piezoelectric ceramic piece (10), described piezoelectric ceramic stack (9) top is provided with the gland (11) for compressing piezoelectric ceramic piece (10), the top center of described gland (11) is vertically installed with pole (12), described pole (12) top is provided with cantilever beam (13), described cantilever beam (13) one end is fixed on the inner side of ring-shaped shell (6), the other end is connected with the mass (14) being arranged on ring-shaped shell (6) center.
2. piezoelectric type energy accumulator according to claim 1, is characterized in that: described cantilever beam (13) and pole (12) chain connection.
3. piezoelectric type energy accumulator according to claim 1 and 2, it is characterized in that: the quantity of the upper piezoelectric unit (5) arranged of described tubbiness base (4) be two and more than, each piezoelectric unit (5) in stacked in layers on tubbiness base (4).
4. piezoelectric type energy accumulator according to claim 1 and 2, is characterized in that: described tubbiness base (4) is made up of strong magnets and can be inhaled on the support (2) of diesel engine (1).
5. piezoelectric type energy accumulator according to claim 3, is characterized in that: described tubbiness base (4) is made up of strong magnets and can be inhaled on the support (2) of diesel engine (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745707.5A CN104485839A (en) | 2014-12-09 | 2014-12-09 | Piezoelectric type energy harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745707.5A CN104485839A (en) | 2014-12-09 | 2014-12-09 | Piezoelectric type energy harvester |
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| Publication Number | Publication Date |
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| CN104485839A true CN104485839A (en) | 2015-04-01 |
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| CN201410745707.5A Pending CN104485839A (en) | 2014-12-09 | 2014-12-09 | Piezoelectric type energy harvester |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877740A (en) * | 2017-03-22 | 2017-06-20 | 武汉理工大学 | Combined type energy accumulator |
| CN110071660A (en) * | 2019-06-05 | 2019-07-30 | 浙江大学城市学院 | Piezoelectric harvester |
| CN111779784A (en) * | 2020-06-05 | 2020-10-16 | 长江大学 | Cantilever type piezoresistance damper |
| CN111934581A (en) * | 2020-06-18 | 2020-11-13 | 重庆大学 | Energy recovery device utilizing piezoelectric stack to capture energy |
| CN112701957A (en) * | 2020-12-24 | 2021-04-23 | 南京航空航天大学 | Variable-rigidity tuned piezoelectric energy harvester |
| CN113078846A (en) * | 2021-03-11 | 2021-07-06 | 东南大学 | Multi-stage piezoelectric energy harvesting device for point-bearing floating slab track |
| CN113531041A (en) * | 2021-07-30 | 2021-10-22 | 山东大学 | Stacked piezoelectric ceramic vibration damping ring |
| CN113659870A (en) * | 2021-07-15 | 2021-11-16 | 哈尔滨工程大学 | Piezoelectric power supply device and method in marine diesel engine |
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| CN203500336U (en) * | 2013-09-29 | 2014-03-26 | 江苏理工学院 | Piezoelectric type braking executing mechanism of vehicle electronic mechanical braking system |
| CN203951386U (en) * | 2014-06-18 | 2014-11-19 | 厦门大学 | A kind of broadband micro piezoelectric vibration energy gatherer |
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Patent Citations (9)
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| JP2652263B2 (en) * | 1990-07-13 | 1997-09-10 | キヤノン株式会社 | Object moving device |
| JPH11146663A (en) * | 1997-11-11 | 1999-05-28 | Sony Corp | Piezoelectric generator |
| JP2000298239A (en) * | 1999-04-15 | 2000-10-24 | Hitachi Denshi Ltd | Z-axial micromotion mechanism for microscope |
| CN1590966A (en) * | 2003-09-02 | 2005-03-09 | 辛洪兵 | Displacement amplifying mechanism |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877740A (en) * | 2017-03-22 | 2017-06-20 | 武汉理工大学 | Combined type energy accumulator |
| CN110071660A (en) * | 2019-06-05 | 2019-07-30 | 浙江大学城市学院 | Piezoelectric harvester |
| CN110071660B (en) * | 2019-06-05 | 2024-01-09 | 浙大城市学院 | Piezoelectric energy harvester |
| CN111779784A (en) * | 2020-06-05 | 2020-10-16 | 长江大学 | Cantilever type piezoresistance damper |
| CN111934581A (en) * | 2020-06-18 | 2020-11-13 | 重庆大学 | Energy recovery device utilizing piezoelectric stack to capture energy |
| CN112701957A (en) * | 2020-12-24 | 2021-04-23 | 南京航空航天大学 | Variable-rigidity tuned piezoelectric energy harvester |
| CN113078846A (en) * | 2021-03-11 | 2021-07-06 | 东南大学 | Multi-stage piezoelectric energy harvesting device for point-bearing floating slab track |
| CN113659870A (en) * | 2021-07-15 | 2021-11-16 | 哈尔滨工程大学 | Piezoelectric power supply device and method in marine diesel engine |
| CN113531041A (en) * | 2021-07-30 | 2021-10-22 | 山东大学 | Stacked piezoelectric ceramic vibration damping ring |
| CN113531041B (en) * | 2021-07-30 | 2022-06-28 | 山东大学 | Stacked piezoelectric ceramic vibration damping ring |
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Application publication date: 20150401 |
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