CN107819411B - Passive pressure power generation device based on piezoelectric rubber - Google Patents
Passive pressure power generation device based on piezoelectric rubber Download PDFInfo
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- CN107819411B CN107819411B CN201711087246.7A CN201711087246A CN107819411B CN 107819411 B CN107819411 B CN 107819411B CN 201711087246 A CN201711087246 A CN 201711087246A CN 107819411 B CN107819411 B CN 107819411B
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- power generation
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- 238000010248 power generation Methods 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 2
- 239000000295 fuel oil Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
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Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/34—Connections of conductor to slip-ring
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- Tires In General (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention provides a piezoelectric rubber-based passive pressure power generation device which comprises a tire, a piezoelectric rubber film, a metal polar plate, a tire driving shaft and a power output device. The power generation device utilizes the pressure and vibration generated in the running process of the tire to enable the flexible piezoelectric rubber compounded in the tire to generate pulse voltage, converts the pulse current generated by the pulse voltage into direct current through the alternating current-direct current conversion circuit, charges the storage battery and realizes electromechanical energy conversion. The invention realizes that the piezoelectric rubber is used for obtaining energy, can be used for manufacturing an automobile tire pressure power generation system to improve the utilization rate of fuel oil, and has the advantages of simple manufacture, low cost, long service life and no secondary pollution.
Description
Technical Field
The invention relates to a passive pressure power generation device, in particular to a passive pressure power generation device based on piezoelectric rubber.
Background
At present, the automobile reserves at home and abroad are increased sharply, but the energy utilization rate of the automobile during running is very low, the utilization rate of the fuel automobile to heat energy is generally not high, the diesel engine is only 30-40%, the gasoline engine is only 20-35%, and most of the rest heat energy is not utilized. In addition, both diesel and gasoline are extracted from petroleum, which is an irreproducible source, and if low-efficiency fuel automobiles are continuously used, petroleum resources are exhausted.
The tire is one of key bearing parts of the automobile, has the functions of bearing the load of the automobile, transmitting driving force and braking force to a road surface and the like, and only reduces the fuel quantity of the automobile by about 5 percent at most by adopting the oil-saving tire. If the energy in the rotating process of the tire can be utilized, a large amount of oil can be saved.
There are many measures for improving the fuel utilization of an automobile based on the rotational energy of a tire, and there are also measures for wirelessly transmitting energy by using a coil mounted on a fender and a hub, and for supplying power to a bypass circuit by using a vibration power generation device provided inside the tire. However, the above measures all have certain disadvantages, for example, the tire pressure power supply device in a wireless energy transmission mode needs to install the magnetic field coil on the automobile main body and the wheel hub at the same time, the system investment cost is too high, and the installation of the coil on the wheel hub easily affects the tire production and the coil performance; the electric quantity generated by the vibration power generation device is related to the vibration energy, and the strength of the vibration is influenced by the smoothness degree of the ground and is difficult to control.
Therefore, there is a need to design a passive pressure power generation device with high cost performance, long service life and easy engineering realization.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a passive pressure power generation device based on piezoelectric rubber. Taking a rotating automobile tire as an example, a plurality of piezoelectric rubber elements are arranged inside the outer tire close to the outer side of the tire according to the specification of the outer tire, the rubber adopts a novel pressure power generation rubber which is newly developed and is different from a ceramic piezoelectric material and a high polymer resin piezoelectric material, the rubber has high output power and high flexibility, and the rubber can be made into a soft film. The piezoelectric rubber is deformed to generate electric energy, and the electric energy is collected and can be used for system power utilization in the automobile driving process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a passive pressure power generation device based on piezoelectric rubber is characterized by comprising a tire, a piezoelectric rubber film, a metal polar plate, a lead A, a lead B, a rim, an electric brush slip ring, a tire driving shaft, a ball, an electric brush support, a pressure spring, a lead C and an electric power output device;
the piezoelectric rubber film is compounded on the near ground side close to the inner part of the tire, and the metal polar plate is arranged on the piezoelectric rubber film; the piezoelectric rubber film is used as a power generation unit, a metal pole plate on the inner side of the piezoelectric rubber film is connected with a lead A and a lead B, the lead A is connected with a rim, a tire driving shaft is utilized to form an electrode, the lead B is connected with an electric brush slip ring, and the electric brush slip ring is arranged on the tire driving shaft to form the whole tire power generation unit; the electric brush is continuously contacted with the electric brush slip ring in the running process of the tire driving shaft, and finally, the electric power output is realized through the conducting wire C.
Furthermore, the piezoelectric rubber film can be superposed on a mechanical structure on the same stress surface according to the power generation requirement and the stress condition of the tire, and is connected in series in a circuit connection mode to form a power generation unit, so that the power generation level with proper pressure is achieved; the shape of the piezoelectric rubber film adopts a regular polygon, and the size of the piezoelectric rubber film is adjustable.
Furthermore, the electromechanical energy conversion unit of the tire is provided with mutually independent current loops so as to prevent the piezoelectric rubber films in different tires from discharging mutually to influence the electric energy efficiency.
Furthermore, the metal polar plate is arranged on the piezoelectric rubber film, but does not completely cover the piezoelectric rubber film.
Furthermore, the lead A and the lead B are respectively connected with the metal polar plate, and in order to avoid the tire from being deformed and broken under repeated pressure, the lead A and the lead B adopt high-quality flexible stranded wires.
Further, the electric power output device is composed of an electric brush, a ball, an electric brush slip ring and an electric brush support.
Further, the brush slip ring is mounted on the tire drive shaft with its metal diaphragm isolated from the tire drive shaft by an insulating material.
Furthermore, metal balls are embedded in the lower portion of the electric brush, so that friction between the electric brush and an electric brush slip ring is reduced, and the service life of the electric power output device is prolonged; the electric brush is fixed by the electric brush support, and the ball is tightly contacted with the electric brush slip ring through the pressure spring above the electric brush.
Compared with the prior art, the invention has the following effects:
1. the power generation rubber film adopted by the invention has the characteristics of light weight, high power, high flexibility, strong plasticity and the like, can generate higher electric energy compared with piezoelectric ceramics in unit area, and can ensure that the piezoelectric layer has smaller thickness when being overlaid and laid.
2. The invention realizes that the piezoelectric rubber film generates electric energy to drive the automobile to run or provides power sources for automobile lighting, sound equipment, charging equipment and the like.
3. The invention implements the aim of green energy, fully utilizes the power advantage generated by the rotation of the tire during the running process of the automobile, recycles the rotation energy, lightens the working load of an automobile engine, and can save non-renewable energy such as petroleum by more than 25 percent.
4. The invention does not need to greatly change the original automobile structure, only needs to add components such as the brush slip ring, the piezoelectric rubber film, the lead, the storage battery and the like, and has strong operability and low manufacturing cost.
Description of the drawings:
FIG. 1 is a structural diagram of the mechanical circuit distribution of the present invention
FIG. 2 is a view showing the arrangement structure of the piezoelectric rubber of the present invention
FIG. 3 is an electromechanical energy conversion equivalent circuit for a single tire
The following description is made in conjunction with the principles and features of the present invention, the examples are provided for the purpose of illustration only and are not intended to limit the scope of the invention.
Detailed Description：
Embodiment 1, as shown in fig. 1 and 2, a piezoelectric rubber-based passive pressure power generation device includes: a tire 1; a piezoelectric rubber film 2; a metal electrode plate 3; a lead A4; a wire B5; a rim 6; an electric brush slip ring 7; a tire drive shaft; a ball 9; an electric brush 10; a brush holder 11; a pressure spring 12; a conductor C13; a power takeoff 14. The piezoelectric rubber film 2 is arranged inside the tire 1 close to the tire ground side, and the two can be made into a whole. The metal polar plate 3 is arranged on the upper portion of the piezoelectric rubber membrane 2 and tightly attached to the piezoelectric rubber membrane 2, the piezoelectric rubber membrane 2 can be stacked on a mechanical structure on the same stress surface according to power generation requirements, and the piezoelectric rubber membrane 2 is connected in series to form a single power generation unit in the stacking process. The metal pole plate 3 on the inner side of the piezoelectric rubber film 2 is respectively connected with a lead A4 and a lead B5, the lead A4 is connected with a rim, an electrode is formed by using a tire driving shaft 8, the lead B5 is connected with an electric brush slip ring 7, the electric brush slip ring 7 is installed on the tire driving shaft 8, and a metal membrane of the electric brush slip ring 7 is isolated from the tire driving shaft 8 through an insulating material to form the whole tire power generation unit. Then, the power output is performed, the power output device 14 is composed of a brush 10, balls 9, a brush slip ring 7 and a brush holder 11, the brush 10 is fixed by the brush holder 11, the metal balls 9 are embedded in the lower portion of the brush 10, and the balls 9 are in close contact with the brush slip ring 7 through a compression spring 12 above the metal balls. The brushes 10 are continuously contacted with the brush slip rings 7 during the running process of the tire driving shaft 8 to transmit current signals, and finally, the electric power output is realized through a lead wire C13.
In embodiment 2, as shown in fig. 3, the equivalent circuit for electromechanical energy conversion of a single tire is described in this embodiment, a plurality of power generation units of the piezoelectric rubber film 2 are arranged on a single tire 1, each power generation unit is respectively communicated with the brush slip ring 7 and the rim 6, and pulse current generated by the contact between the brush 10 and the brush slip ring 7 is transmitted to the ac-dc conversion circuit and then output in the form of direct current, so that electromechanical energy conversion is completed.
The present invention is not limited to the above embodiments, and all technical equivalents and alternatives equivalent to those skilled in the art according to the technical teaching of the present invention fall within the scope of the present invention.
Claims (7)
1. A passive pressure power generation device based on piezoelectric rubber is characterized by comprising a tire (1), a piezoelectric rubber film (2), a metal pole plate (3), a lead A (4), a lead B (5), a rim (6), an electric brush slip ring (7), a tire driving shaft (8), a ball (9), an electric brush (10), an electric brush support (11), a pressure spring (12), a lead C (13) and an electric power output device (14);
the piezoelectric rubber film (2) is compounded on the near ground side close to the inside of the tire (1), and the metal polar plate (3) is arranged on the piezoelectric rubber film (2); the piezoelectric rubber film (2) is used as a power generation unit, a metal pole plate (3) on the inner side of the piezoelectric rubber film is connected with a lead A (4) and a lead B (5), the lead A (4) is connected with a rim (6), a tire driving shaft (8) is utilized to form an electrode, the lead B (5) is connected with an electric brush sliding ring (7), and the electric brush sliding ring (7) is arranged on the tire driving shaft (8) to form the whole tire power generation unit; the electric brush (10) is continuously contacted with the electric brush slip ring (7) in the running process of the tire driving shaft (8), and finally, the electric power output is realized through a conducting wire C (13);
the piezoelectric rubber film (2) can be superposed on a mechanical structure on the same stress surface according to the power generation requirement and the stress condition of the tire (1), and is connected in series in a circuit connection mode to form a power generation unit, so that the power generation level with proper pressure is achieved; the shape of the piezoelectric rubber film (2) adopts a regular polygon, and the size is adjustable.
2. A piezoelectric rubber based passive pressure generating device as claimed in claim 1, wherein: the electromechanical energy conversion unit of the tire (1) is provided with mutually independent current loops so as to prevent the piezoelectric rubber films (2) in different tires (1) from discharging mutually to influence the electric energy efficiency.
3. A piezoelectric rubber based passive pressure generating device as claimed in claim 1, wherein: the metal polar plate (3) is arranged on the piezoelectric rubber film (2) but does not completely cover the piezoelectric rubber film (2).
4. A piezoelectric rubber based passive pressure generating device as claimed in claim 1, wherein: the lead A (4) and the lead B (5) are respectively connected with the metal polar plate (3), and in order to avoid the tire (1) from being deformed and broken under repeated pressure, the lead A (4) and the lead B (5) adopt high-quality flexible stranded wires.
5. A piezoelectric rubber based passive pressure generating device as claimed in claim 1, wherein: the electric power output device (14) is composed of an electric brush (10), a ball (9), an electric brush slip ring (7) and an electric brush support (11).
6. A piezoelectric rubber based passive pressure generating device as claimed in claim 1, wherein: the brush slip ring (7) is mounted on the tire drive shaft (8), and the metal membrane thereof is isolated from the tire drive shaft (8) by an insulating material.
7. A piezoelectric rubber based passive pressure generating device as claimed in claim 1, wherein: the lower part of the electric brush (10) is embedded with a metal ball (9) so as to reduce the friction between the electric brush (10) and the electric brush slip ring (7) and prolong the service life of the electric power output device; the brush (10) is fixed by a brush support (11), and the ball (9) is tightly contacted with the brush slip ring (7) through a pressure spring (12) above the brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711087246.7A CN107819411B (en) | 2017-11-07 | 2017-11-07 | Passive pressure power generation device based on piezoelectric rubber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711087246.7A CN107819411B (en) | 2017-11-07 | 2017-11-07 | Passive pressure power generation device based on piezoelectric rubber |
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| Publication Number | Publication Date |
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| CN107819411A CN107819411A (en) | 2018-03-20 |
| CN107819411B true CN107819411B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711087246.7A Active CN107819411B (en) | 2017-11-07 | 2017-11-07 | Passive pressure power generation device based on piezoelectric rubber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111585465B (en) * | 2020-05-26 | 2021-03-02 | 西安交通大学 | Rotation type power generation facility based on water droplet striking friction |
| CN112054711B (en) * | 2020-08-28 | 2021-10-29 | 北京纳米能源与系统研究所 | Mechanical rectification type friction nano power generation device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377992A (en) * | 2014-11-07 | 2015-02-25 | 大连华工创新科技股份有限公司 | Tire power generation device |
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- 2017-11-07 CN CN201711087246.7A patent/CN107819411B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377992A (en) * | 2014-11-07 | 2015-02-25 | 大连华工创新科技股份有限公司 | Tire power generation device |
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| CN107819411A (en) | 2018-03-20 |
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