CN102080638A - Hydraulic principle-based piezoelectric microvibration energy converter - Google Patents
Hydraulic principle-based piezoelectric microvibration energy converter Download PDFInfo
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- CN102080638A CN102080638A CN2010105950197A CN201010595019A CN102080638A CN 102080638 A CN102080638 A CN 102080638A CN 2010105950197 A CN2010105950197 A CN 2010105950197A CN 201010595019 A CN201010595019 A CN 201010595019A CN 102080638 A CN102080638 A CN 102080638A
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- energy
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- hydraulic principle
- shakes
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- 230000000694 effects Effects 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Abstract
The invention relates to an energy converter, in particular to a hydraulic principle-based piezoelectric microvibration energy converter. The hydraulic principle-based piezoelectric microvibration energy converter can collect energy, comprising energy sources such as solar energy, heat energy, mechanical energy and the like capable of producing vibration frequency, from a peripheral environment, amplifies a vibration force in the environment by utilizing a hydraulic principle, makes the vibration force act on a piezoelectric device, produces electric energy by utilizing the piezoelectric effect of the piezoelectric device and supplies power to a sensor or other low-power consumption loads. The technology is based on microvibration energy, so the hydraulic principle-based piezoelectric microvibration energy converter has long service life, is not limited by utilization capacity and hardly required to be replaced and avoids the problems of environmental pollutions; in addition, the working process of the energy converter is a physical process, and a working medium is substantially not influenced by the environment, so the hydraulic principle-based piezoelectric microvibration energy converter can avoid limitations to working environments, expand the application range of the sensor and the like and better using effects.
Description
Technical field
The present invention relates to a kind of enegrgy converter, particularly a kind of piezoelectricity enegrgy converter that shakes that declines based on hydraulic principle.
Background technique
In " wisdom city " built, need to use and widely apply various sensors.If these sensors all use " wired " mode transmission signal and power supply, just must lay a large amount of cables in advance, construction and maintenance cost are all very huge.Along with technological progress, wireless sensor network is applied gradually in fields such as electric power, traffic and national defence.Wireless sensor network has solved a series of problems that communication cable brings of laying by mode transmission signal such as GPRS, WiFi, bluetooths.Yet its deficiency is, aspect the node power supply, the wireless senser of prior art mainly uses the high energy density cells power supply, the energy-storage battery capacity is fixed, in use between on be subjected to a lot of restrictions, constantly changing in the process of battery, discarded battery has also brought environmental pollution, in addition, the Environmental Conditions of energy-storage battery is also restricted, has the hidden danger of blast under complex environments such as humidity, sweltering heat.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part and provide a kind of and reduce service time, the piezoelectricity based on hydraulic principle of Environmental Conditions restriction, environmental protection declines the enegrgy converter that shakes.
The present invention is achieved through the following channels:
A kind of piezoelectricity enegrgy converter that shakes that declines based on hydraulic principle, include T shell body, hydraulic pressure installation, piezoelectric device and power-converting device, T shell body includes larger cross-section portion and small cross sections portion, hydraulic pressure installation includes shake unit, small piston, hydraulic oil, oil hydraulic cylinder and big piston, oil hydraulic cylinder is positioned at the handing-over position of T shell intracoelomic cavity larger cross-section portion and small cross sections portion, be full of hydraulic oil in the cylinder, oil hydraulic cylinder is positioned at housing inner chamber small cross sections portion one side small piston is installed, be positioned at larger cross-section portion one side big piston is installed, shake unit one end is connected with the small piston outer side surface, and big piston is connected with power-converting device by piezoelectric device.
The shake unit that exists maximum frequencies to be close in the selection natural frequency of vibration and the Environmental Conditions, like this, the little center of percussion shake unit of low frequency in environment resonates easily, shake unit can also directly receive the strong vibration source of vibrational energy in addition, shake unit is by gathering the vibrational energy of environment with upper type, and pass to small piston, pass to hydraulic oil by small piston again, because the oil hydraulic cylinder at hydraulic oil place arrives the large-section conversion via small bore, under with the pressure situation, pressure is exaggerated, and according to hydraulic principle, it is big that magnification factor equals, the cross-section area ratio of small piston.Big piston is received the vibration force of the amplification of being transmitted by hydraulic oil, directly pushes piezoelectric device, and according to the piezoelectric effect principle, this piezoelectric device surface produces electric charge, and this electric charge is handled the formation direct current via power-converting device and used for external loading.
Enegrgy converter of the present invention can be collected the energy of surrounding enviroment, comprise that solar energy, heat energy, mechanical energy etc. can produce the energy source of vibration frequency, utilize hydraulic principle, affact on the piezoelectric device after the vibration force in the environment is amplified, utilize the piezoelectric effect of piezoelectric device to produce electric energy, be sensor or other low power consumption electric, because present technique is based on little energy that shakes, so service time is long, is not used capacity limit, almost need not to change, do not have environmental pollution problem; In addition, transformation of energy working procedure of the present invention is a physical process, and working medium is not affected by environment substantially, so working environment is unrestricted, can enlarge the using scope of sensor etc., improves using effect.
The present invention can further be specially:
The cross-section area ratio of big piston and small piston is greater than 3.
In order to guarantee the amplification effect of energy in hydraulic pressure installation, magnification ratio, promptly the cross-section area ratio of big piston and small piston should be greater than 3, and optimal selection should be greater than 5-10 doubly.
Piezoelectric device is made by piezoelectric material, and its effect surface fixedly mounts near power-converting device.
That is to say that piezoelectric device is fixed on the one side of power-converting device towards big piston, the electric charge that effect surface produces can be directly delivered to power-converting device and handle.
Piezoelectric material can adopt PZT piezoelectric constant pad, and area equates with the big piston area.
Power-converting device includes the rectifying device and the regulator of electrical connection, and rectifying device connects piezoelectric device, the external working electrode of regulator.
Piezoelectric device forms alternating signal because of after piezoelectric effect produces electric charge, and rectifying device is handled this alternating signal inlet wire rectification, forms direct current, and regulator is used for formed direct current is adjusted into the work electric energy, supplies with the external loading use then.
Shake unit can be a kind of spring component.
The material of spring and structure like this, except the big vibration source of energy, can also receive the vibration source of low frequency according to the resonant frequency decision that the environment frequency computation part that specifically records draws.Shake unit
In sum, the invention provides a kind of piezoelectricity enegrgy converter that shakes that declines based on hydraulic principle, can collect the energy of surrounding enviroment, comprise that solar energy, heat energy, mechanical energy etc. can produce the energy source of vibration frequency, utilize hydraulic principle, to affact on the piezoelectric device after the amplification of the vibration force in the environment, utilize the piezoelectric effect of piezoelectric device to produce electric energy, be sensor or other low power consumption electric, because present technique is based on little energy that shakes, so service time is long, is not used capacity limit, almost need not to change, do not have environmental pollution problem; In addition, transformation of energy working procedure of the present invention is a physical process, and working medium is not affected by environment substantially, so working environment is unrestricted, can enlarge the using scope of sensor etc., improves using effect.
Description of drawings
Figure 1 shows that the piezoelectricity based on the hydraulic principle of the present invention structural representation of enegrgy converter of shaking that declines.
Below in conjunction with embodiment the present invention is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, a kind of piezoelectricity enegrgy converter that shakes that declines based on hydraulic principle, include T shell body, hydraulic pressure installation, piezoelectric device and power-converting device, T shell body includes larger cross-section portion and small cross sections portion, hydraulic pressure installation includes shake unit, small piston, hydraulic oil, oil hydraulic cylinder and big piston, oil hydraulic cylinder is positioned at the handing-over position of T shell intracoelomic cavity larger cross-section portion and small cross sections portion, install near T shell body madial wall, oil hydraulic cylinder is positioned at housing inner chamber small cross sections portion one side small piston is installed, be positioned at larger cross-section portion one side big piston is installed, greatly, be full of hydraulic oil in the cylinder chamber between the small piston, shake unit is that a kind of natural frequency of vibration is the spring component of 100HZ, the one end is connected with the small piston outer side surface, and big piston is connected with power-converting device by piezoelectric device.
The present invention provides a concrete used parameter: oil hydraulic cylinder is upper coarse and lower fine, height overall 20mm, and the thick cylinder height * external diameter in top=8 * 11mm, the thin cylinder height * external diameter in bottom=12 * 5mm, oil hydraulic cylinder casing wall thickness is 1mm.Described big piston is thick * diameter=3 * 9mm, and small piston is thick * diameter=2 * 3mm.
Wherein piezoelectric device is made by a kind of piezoelectric material of PZT piezoelectric constant pad, and area equates that with the big piston area thickness is 2mm.Power-converting device includes the rectifying device and the regulator of electrical connection, and rectifying device connects piezoelectric device, the external working electrode of regulator.
Its working principle is:
The little center of percussion of the low frequency of spring component in environment resonates, gather the vibrational energy of environment thus, and pass to small piston, pass to hydraulic oil by small piston again, because the oil hydraulic cylinder at hydraulic oil place arrives the large-section conversion via small bore, under with the pressure situation, pressure is exaggerated, according to hydraulic principle, magnification factor equals the cross-section area ratio of large and small piston, in the scope that transducer can be accepted, ratio is big more, and then amplification effect is good more.Big piston is received the vibration force of the amplification of being transmitted by hydraulic oil, directly push piezoelectric device, according to the piezoelectric effect principle, this piezoelectric device surface produces electric charge, this electric charge is a direct current via the rectifying device elder generation rectification of power-converting device, adjust output voltage by regulator again, at last the direct current of output is supplied with final load by working electrode and use.
It is same as the prior art that the present invention does not state part.
Claims (6)
1. the piezoelectricity based on hydraulic principle enegrgy converter that shakes that declines, it is characterized in that, include T shell body, hydraulic pressure installation, piezoelectric device and power-converting device, T shell body includes larger cross-section portion and small cross sections portion, hydraulic pressure installation includes shake unit, small piston, hydraulic oil, oil hydraulic cylinder and big piston, oil hydraulic cylinder is positioned at the handing-over position of T shell intracoelomic cavity larger cross-section portion and small cross sections portion, be full of hydraulic oil in the cylinder, oil hydraulic cylinder is positioned at housing inner chamber small cross sections portion one side small piston is installed, be positioned at larger cross-section portion one side big piston is installed, shake unit one end is connected with the small piston outer side surface, and big piston is connected with power-converting device by piezoelectric device.
2. a kind of piezoelectricity based on hydraulic principle according to claim 1 enegrgy converter that shakes that declines is characterized in that the cross-section area ratio of big piston and small piston is greater than 3.
3. a kind of piezoelectricity based on hydraulic principle according to claim 1 enegrgy converter that shakes that declines is characterized in that piezoelectric device is made by piezoelectric material, and its effect surface fixedly mounts near power-converting device.
4. a kind of piezoelectricity based on hydraulic principle according to claim 2 enegrgy converter that shakes that declines is characterized in that, piezoelectric material adopts PZT piezoelectric constant pad, and area equates with the big piston area.
5. a kind of piezoelectricity based on hydraulic principle according to claim 1 enegrgy converter that shakes that declines is characterized in that power-converting device includes the rectifying device and the regulator of electrical connection, and rectifying device connects piezoelectric device, the external working electrode of regulator.
6. a kind of piezoelectricity based on hydraulic principle according to claim 1 enegrgy converter that shakes that declines is characterized in that shake unit is a kind of spring component.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010595019.7A CN102080638B (en) | 2010-12-20 | 2010-12-20 | Hydraulic principle-based piezoelectric microvibration energy converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010595019.7A CN102080638B (en) | 2010-12-20 | 2010-12-20 | Hydraulic principle-based piezoelectric microvibration energy converter |
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| CN102080638A true CN102080638A (en) | 2011-06-01 |
| CN102080638B CN102080638B (en) | 2014-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016434A (en) * | 2012-12-20 | 2013-04-03 | 北京航空航天大学 | Piezoelectric ceramic direct-driving servo valve based on hydraulic micro-displacement amplification structure |
| CN103433178A (en) * | 2013-09-04 | 2013-12-11 | 吉林大学 | Piezoelectric-hydraulic control type dispensing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1610210A (en) * | 2004-11-22 | 2005-04-27 | 西安交通大学 | Rolling stock rail vibration energy piezoelectric power generating method and system thereof |
| CN1610209A (en) * | 2004-11-22 | 2005-04-27 | 西安交通大学 | Rail vehicle vibrating energy piezoelectric power generating method and system thereof |
| CN201943906U (en) * | 2010-12-20 | 2011-08-24 | 福建水口发电集团有限公司 | Piezoelectric micro-vibration energy converter based on hydraulic principles |
-
2010
- 2010-12-20 CN CN201010595019.7A patent/CN102080638B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1610210A (en) * | 2004-11-22 | 2005-04-27 | 西安交通大学 | Rolling stock rail vibration energy piezoelectric power generating method and system thereof |
| CN1610209A (en) * | 2004-11-22 | 2005-04-27 | 西安交通大学 | Rail vehicle vibrating energy piezoelectric power generating method and system thereof |
| CN201943906U (en) * | 2010-12-20 | 2011-08-24 | 福建水口发电集团有限公司 | Piezoelectric micro-vibration energy converter based on hydraulic principles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016434A (en) * | 2012-12-20 | 2013-04-03 | 北京航空航天大学 | Piezoelectric ceramic direct-driving servo valve based on hydraulic micro-displacement amplification structure |
| CN103433178A (en) * | 2013-09-04 | 2013-12-11 | 吉林大学 | Piezoelectric-hydraulic control type dispensing device |
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| Publication number | Publication date |
|---|---|
| CN102080638B (en) | 2014-03-26 |
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Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: FUJIAN SHUIKOU POWER GENERATION GROUP CO., LTD. Effective date: 20121120 Owner name: FUJIAN ELECTRIC POWER CO., LTD. FUJIAN SHUIKOU POW Effective date: 20121120 |
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Effective date of registration: 20121120 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Fujian Electric Power Co., Ltd. Applicant after: Fujian Shuikou Power Generation Group Co., Ltd. Address before: 350001 Shuikou building, No. 333 Baima South Road, Taijiang District, Fujian, Fuzhou Applicant before: Fujian Shuikou Power Generation Group Co., Ltd. |
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