CN220440575U - Energy acquisition device, tire sensor and automobile - Google Patents
Energy acquisition device, tire sensor and automobile Download PDFInfo
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- CN220440575U CN220440575U CN202320156189.8U CN202320156189U CN220440575U CN 220440575 U CN220440575 U CN 220440575U CN 202320156189 U CN202320156189 U CN 202320156189U CN 220440575 U CN220440575 U CN 220440575U
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- rod piece
- piezoelectric sheet
- box body
- energy harvesting
- air chamber
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- 230000006698 induction Effects 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000003306 harvesting Methods 0.000 claims description 24
- 238000010248 power generation Methods 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 10
- 239000010409 thin film Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses an energy acquisition device, a tire sensor and an automobile, wherein the energy acquisition device comprises a box body; the hinged support is arranged in the box body; one end of the rod piece is hinged to the hinged support; the piezoelectric sheet component is arranged in the box body, the piezoelectric sheet component is matched with the other end of the rod piece; a permanent magnet assembly is provided with a plurality of permanent magnets, is arranged in the box body and is provided with a plurality of grooves, the permanent magnet assembly is suitable for forming a magnetic field in the swinging area of the rod piece; and a coil assembly disposed on the shaft of the rod, the rod piece is suitable for swinging to drive the coil assembly to cut the magnetic induction wire; and the energy collection mechanism is electrically connected with the piezoelectric sheet assembly and the coil assembly respectively. The piezoelectric power generation and the electromagnetic power generation are combined, on one hand, the piezoelectric sheet is used for generating power, on the other hand, when the rod piece swings back and forth, the coil assembly on the rod piece can cut the magnetic induction line to generate power, so that the generated electric quantity can be supplied to the tire sensor for use, and the piezoelectric tire sensor has the characteristics of simple and compact structure and easiness in popularization.
Description
Technical Field
The utility model relates to the technical field of energy collection, in particular to an energy collection device, a tire sensor and an automobile.
Background
In the existing vehicle tire pressure sensor market, the tire pressure sensor is mainly divided into two main types of sensors, namely an in-tire type tire pressure sensor and an out-of-tire type tire pressure sensor. The in-tire monitoring environment is better than the out-of-tire monitoring environment, but the out-of-tire sensor is less costly. Both are mainly powered by batteries, have timeliness limitation, need to be replaced for a plurality of times, and increase the cost of phase change.
Among them, there is also a technology of converting the piezoelectric effect into electric energy by collecting mechanical energy generated during the running of the wheels on the market, but the efficiency of energy collection is low, and there is room for improvement.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides an energy collecting device which can collect and utilize the mechanical energy of the tire during rolling more efficiently by the technology of converting the piezoelectric effect and electromagnetic induction into electric energy and supply power for the tire sensor so as to solve the problem of difficult power supply of the tire sensor as far as possible.
The utility model also provides a tire sensor comprising the energy acquisition device.
The utility model also provides an automobile comprising the tire sensor.
An energy harvesting device according to an embodiment of the first aspect of the utility model comprises:
a case;
the hinged support is arranged in the box body;
one end of the rod piece is hinged to the hinged support;
the piezoelectric sheet component is arranged in the box body and is matched with the other end of the rod piece;
the permanent magnet assembly is arranged in the box body and is suitable for forming a magnetic field in the swinging area of the rod piece; and
the coil component is arranged on the rod body of the rod piece, and the rod piece is suitable for swinging to drive the coil component to cut the magnetic induction wire;
and the energy collection mechanism is electrically connected with the piezoelectric sheet assembly and the coil assembly respectively.
The energy harvesting device according to the embodiment of the first aspect of the present utility model has at least the following advantages: the piezoelectric power generation and the electromagnetic power generation are combined, on one hand, the piezoelectric sheet is used for generating power, on the other hand, when the rod piece swings back and forth, the coil assembly on the rod piece can cut the magnetic induction line to generate power, so that the generated electric quantity can be supplied to the tire sensor for use, and the piezoelectric tire sensor has the characteristics of simple and compact structure and easiness in popularization.
According to an embodiment of the first aspect of the present utility model, the energy harvesting device further includes an air chamber, a piston is disposed at the other end of the rod, the piston is movably disposed in the air chamber, the air chamber is provided with an air outlet, the piezoelectric sheet assembly includes a thin film and a piezoelectric sheet disposed on the thin film, the thin film deforms based on the gas output from the air outlet, and the piezoelectric sheet generates a voltage based on the deformation of the thin film.
According to the energy collection device of the embodiment of the first aspect of the utility model, two air outlet holes are arranged, and each air outlet hole is respectively arranged at two ends of the air chamber.
According to the energy collection device of the embodiment of the first aspect of the utility model, the thin film is arranged on the periphery of the air chamber in a covering mode, two groups of piezoelectric sheets are arranged, and each group of piezoelectric sheets is respectively arranged close to each air outlet hole.
According to the energy collection device of the embodiment of the first aspect of the utility model, the air chamber is provided with a circular arc-shaped cavity, and the piston is arranged in the cavity in a sliding manner.
According to the energy collection device of the embodiment of the first aspect of the utility model, a connecting piece is arranged in the box body, and the connecting piece supports the air chamber.
According to the energy collection device of the embodiment of the first aspect of the present utility model, the magnetic field generated by the permanent magnet assembly is perpendicular to a preset plane where the swinging area of the rod piece is located, and the coil assembly is arranged parallel to the preset plane.
According to the energy collecting device of the first aspect of the embodiment of the present utility model, the hinge support, the rod, the piezoelectric sheet assembly, the permanent magnet assembly and the coil assembly are arranged in two groups, and are symmetrically arranged with respect to a horizontal center line of the case.
A tire sensor according to an embodiment of the second aspect of the present utility model includes: an energy harvesting device according to an embodiment of the first aspect of the utility model.
An automobile according to an embodiment of the third aspect of the present utility model includes: a tire sensor according to an embodiment of the second aspect of the present utility model.
It will be appreciated that the tire sensor according to the embodiment of the second aspect of the present utility model and the automobile according to the embodiment of the third aspect of the present utility model, the energy collecting device according to the embodiment of the first aspect has the technical effects described above, and thus will not be described in detail.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Reference numerals:
the device comprises a box body 1, a hinged support 2, a rod 3, a piston 4, a magnetic field 5, an air chamber 6, a film 7, a piezoelectric sheet 8, a coil assembly 9, an energy collection mechanism 10, a connecting piece 11 and a wire 12.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the meaning of several is one or more, the meaning of a plurality is at least two, greater than, less than, exceeding, etc. is understood to not include the present number, and above, below, within, etc. is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless clearly defined otherwise, terms such as arrangement, mounting, connection, etc. should be construed broadly, the specific meaning of the terms in this application can be determined reasonably by a person skilled in the art after combining the specific contents of the technical solutions.
Referring to fig. 1, an energy harvesting device according to an embodiment of the first aspect of the present application is applied to power a tire sensor, and the energy harvesting device includes a case 1, a hinge support 2, a rod 3, a piezoelectric sheet assembly, a permanent magnet assembly, a coil assembly 9, and an energy harvesting mechanism 10.
Wherein the housing 1 is a sealed housing structure which is integrally secured within an airtight chamber within the interior of a vehicle tyre and which transmits vibrational and mechanical energy of the tyre during running of the vehicle to provide kinetic energy to the mechanical components within. In some embodiments, the material of the case 1 is stainless steel, the cost of the stainless steel material is low, and the internal structure can be protected from the external environment, so that on one hand, the cost of the device can be reduced as much as possible, and on the other hand, the internal device can be protected from the external factors.
Wherein the hinge support 2 is arranged in the box body 1, one end of the rod piece 3 is hinged with the hinge support 2, and the rod piece 3 rotates along with the rotation of the tire to do fixed axis rotation. The piezoelectric sheet component is arranged in the box body 1 and is matched with the other end of the rod piece 3. It will be appreciated that the piezoelectric plate 8 is subjected to an external mechanical force and generates a voltage based on a piezoelectric effect, and the rod 3 is hinged to the hinged support 2 and can move along with the running of the automobile, so that the piezoelectric plate assembly is matched with the rod 3, the rod 3 is continuously matched with the piezoelectric plate assembly, and the matching modes comprise direct contact, indirect contact and the like, so that the conversion between mechanical energy and electric energy is realized.
Wherein the permanent magnet assembly is arranged in the box body 1, the permanent magnet assembly is suitable for forming a magnetic field 5 in the swinging area of the rod piece 3, the coil assembly 9 is arranged on the rod body of the rod piece 3, and the rod piece 3 is suitable for swinging to drive the coil assembly 9 to cut a magnetic induction line. It will be appreciated that the coil assembly 9 is fixedly attached to the rod 3 and generates electricity as it moves to cut the magnetic induction lines. More specifically, the permanent magnet assembly comprises two pairs of permanent magnets fixedly connected to two sides of the case 1, and a magnetic field 5 is formed in the swinging area of the rod 3 by the two pairs of permanent magnets.
Wherein the energy harvesting mechanism 10 is electrically connected to the piezoelectric patch assembly and the coil assembly 9, respectively. More specifically, the energy harvesting mechanism 10 is electrically connected to the piezoelectric patch assembly and the coil assembly 9, respectively, via leads 12, the leads 12 functioning as current conductors. In some embodiments, the energy harvesting mechanism 10 is a piezoelectric, electromagnetic energy harvesting processing device, more specifically comprising: the three-voltage doubling circuit is used for boosting the voltage generated by cutting the magnetic induction wire by the piezoelectric sheet assembly and the coil assembly 9; the power management circuit comprises an LTC3588-1 chip and is used for rectifying and stabilizing voltage, limiting amplitude and storing input voltage and finally supplying power to the sensor, so that vibration energy is collected when the automobile tire rotates, and the vibration energy is converted into electric energy to supply power to the automobile tire pressure and tire temperature sensor.
Referring to fig. 1, the energy harvesting device according to the first aspect of the present application combines piezoelectric power generation and electromagnetic power generation, on the one hand, generates power through the piezoelectric sheet 8, and on the other hand, when the rod 3 swings back and forth, the coil assembly 9 on the rod 3 cuts the magnetic induction line to generate power, so that the generated electric quantity can be supplied to the tire sensor, and the energy harvesting device has the characteristics of simple and compact structure and easy popularization. More specifically, the energy collection device can effectively collect vibration energy and mechanical energy in the environment and circulate the vibration energy and the mechanical energy, thereby realizing the utilization of the environmental energy and self-power supply. The device has simple and effective structure, saves space, can replace a chemical battery to supply power for a low-power system, and is an energy collection device applying renewable energy.
In some embodiments of the present application, the energy harvesting device further includes an air chamber 6, the other end of the rod 3 is provided with a piston 4, the piston 4 is movably disposed in the air chamber 6, the air chamber 6 is provided with an air outlet, the piezoelectric sheet assembly includes a film 7 and a piezoelectric sheet 8 disposed on the film 7, the film 7 deforms based on the gas output from the air outlet, and the piezoelectric sheet 8 generates a voltage based on the deformation of the film 7.
It will be appreciated that the piston 4 oscillates back and forth along the air chamber 6 under the dead weight of the rod 3 and the acceleration generated by rotation of the tyre. On the one hand, an induced current is generated by the coil assembly 9 on the rod 3 cutting the magnetic field 5. On the other hand, the air in the air chamber 6 rapidly flows in the direction of pushing the piston 4 due to the pushing of the piston 4, the air expands and deforms the film 7 through the air outlet hole formed in the air chamber 6, and the ceramic piezoelectric plate 8 attached to the film 7 generates an electric polarization phenomenon inside under the action of external force to generate voltage.
In some embodiments of the present application, two air outlet holes are provided, and each air outlet hole is provided at two ends of the air chamber 6. Further, the film 7 is arranged on the periphery of the air chamber 6 in a covering manner, two groups of piezoelectric sheets 8 are arranged, and each group of piezoelectric sheets 8 is respectively arranged close to each air outlet hole. Further, the air chamber 6 is provided with a circular arc-shaped cavity, and the piston 4 is slidably arranged in the cavity.
The piezoelectric sheet 8 is a ceramic piezoelectric sheet 8, such as a PZT piezoelectric sheet 8. The vent holes can be small holes, and the expansion deformation of the film 7 is more obvious by using the impact force of small Kong Fangda gas. The film 7 and the piezoelectric sheet 8 are in a mutually adhered state, and the piezoelectric sheet 8 is respectively arranged at two ends of the air chamber 6. The rod piece 3 and the air chamber 6 are made of beryllium bronze material so as to be free from the influence of the permanent magnet. The beryllium bronze material is a high-strength elastic material, is nonmagnetic, spark-resistant, wear-resistant, strong in fatigue resistance and stress relaxation-resistant, can fully meet the requirements of strong elasticity, wear resistance and fatigue resistance of the air chamber 6, and also solves the problem that the rod piece 3 is easy to wear due to the fact that the rod piece 3 swings back and forth on the fixed hinge support 2, and the acting force of the permanent magnet on the rod piece 3 cannot be influenced due to the nonmagnetic property. Wherein, the radius of curvature of arc air chamber 6 and member 3 length phase-match thereby play the limiting displacement to member 3 swing, and piston 4 sets up to rubber piston 4, scribbles the lubricant with the air chamber 6 wall between in order to reduce friction damage.
In some embodiments of the present application, the connector 11 is disposed in the case 1, the connector 11 supports the air chamber 6, the air chamber 6 is connected with the left and right sides of the case 1 through the connector 11, and the connector 11 plays a role of fixing a position.
In some embodiments of the present application, the magnetic field 5 generated by the permanent magnet assembly is perpendicular to the preset plane in which the swing area of the rod 3 is located, and the coil assembly 9 is disposed parallel to the preset plane. Specifically, the permanent magnet assembly comprises two pairs of permanent magnets fixedly connected to the front side and the rear side of the box body 1, and a magnetic field 5 vertical to the box body and facing inwards is formed in the swinging area of the rod piece 3 through the two pairs of permanent magnets.
In some embodiments of the present application, the hinge support 2, the rod 3, the piezoelectric sheet assembly, the permanent magnet assembly and the coil assembly 9 are arranged in two groups and symmetrically arranged with respect to the horizontal center line of the case 1, and are integrally fixedly connected in the airtight chamber inside the automobile tire, and the symmetrical arrangement can more fully collect and utilize vibration energy and mechanical energy generated when the tire rolls.
Referring to fig. 1, a tire sensor according to an embodiment of the second aspect of the present application may be a tire pressure sensor, a tire temperature sensor, or the like, and the tire sensor includes an energy harvesting device according to an embodiment of the first aspect of the present application, and achieves self-power supply by utilizing environmental energy.
Referring to fig. 1, an automobile according to an embodiment of the third aspect of the present application may be a fuel automobile or a new energy automobile, and the automobile includes the tire sensor according to the embodiment of the second aspect of the present application, so that mechanical energy and vibration energy during tire rolling can be collected and utilized, and self-power supply is realized, so that the automobile using the tire sensor can also extend cruising to a certain extent.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.
Claims (10)
1. An energy harvesting device, comprising:
a case;
the hinged support is arranged in the box body;
one end of the rod piece is hinged to the hinged support;
the piezoelectric sheet component is arranged in the box body and is matched with the other end of the rod piece;
the permanent magnet assembly is arranged in the box body and is suitable for forming a magnetic field in the swinging area of the rod piece; and
the coil component is arranged on the rod body of the rod piece, and the rod piece is suitable for swinging to drive the coil component to cut the magnetic induction wire;
and the energy collection mechanism is electrically connected with the piezoelectric sheet assembly and the coil assembly respectively.
2. The energy harvesting device of claim 1, wherein: the energy acquisition device further comprises an air chamber, the other end of the rod piece is provided with a piston, the piston is movably arranged in the air chamber, the air chamber is provided with an air outlet, the piezoelectric sheet assembly comprises a film and a piezoelectric sheet arranged on the film, the film deforms based on gas output by the air outlet, and the piezoelectric sheet generates voltage based on the deformation of the film.
3. The energy harvesting device of claim 2, wherein: the number of the air outlets is two, and each air outlet is respectively arranged at two ends of the air chamber.
4. An energy harvesting device as claimed in claim 3, wherein: the film covers and is arranged on the periphery of the air chamber, the piezoelectric sheets are arranged in two groups, and each group of piezoelectric sheets is respectively arranged close to each air outlet hole.
5. The energy harvesting device of claim 2, wherein: the air chamber is provided with a circular arc-shaped cavity, and the piston is arranged in the cavity in a sliding manner.
6. The energy harvesting device of claim 5, wherein: the box body is internally provided with a connecting piece, and the connecting piece supports the air chamber.
7. The energy harvesting device of claim 1, wherein: the magnetic field generated by the permanent magnet assembly is perpendicular to a preset plane where the swinging area of the rod piece is located, and the coil assembly is parallel to the preset plane.
8. The energy harvesting device of any of claims 1-7, wherein: the hinge support, the rod piece, the piezoelectric sheet component, the permanent magnet component and the coil component are arranged in two groups and are symmetrically arranged by taking the central line of the horizontal direction of the box body as a reference.
9. A tire sensor, comprising: an energy harvesting device as claimed in any one of claims 1 to 8.
10. An automobile, comprising: the tire sensor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320156189.8U CN220440575U (en) | 2023-01-18 | 2023-01-18 | Energy acquisition device, tire sensor and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320156189.8U CN220440575U (en) | 2023-01-18 | 2023-01-18 | Energy acquisition device, tire sensor and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220440575U true CN220440575U (en) | 2024-02-02 |
Family
ID=89694362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320156189.8U Active CN220440575U (en) | 2023-01-18 | 2023-01-18 | Energy acquisition device, tire sensor and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220440575U (en) |
-
2023
- 2023-01-18 CN CN202320156189.8U patent/CN220440575U/en active Active
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