CN115447320A - Array energy harvesting intelligent tire - Google Patents

Abstract

The invention relates to the technical field of intelligent tires, in particular to an array energy harvesting intelligent tire, which comprises a tire, a hub, two circles of electrodes, a lead, an energy storage element sensor module and a plurality of piezoelectric modules, wherein the two circles of electrodes are arranged on the hub; the piezoelectric modules are distributed around the tire center in an array manner, after the tire is inflated, the tire rim part of the tire is tightly attached to a wheel hub, the piezoelectric modules are respectively in contact communication with two rings of electrodes, and the piezoelectric modules distributed in the array manner are connected in parallel, so that energy is continuously provided for a sensor and an energy storage device in the tire; through setting up piezoelectric module at tire side wall position, the side wall is the biggest position of whole tire deformation in rolling, increases the deformation volume of piezoelectric module when tire rotation at every turn to increase electric quantity output, solved current tire energy harvesting equipment power and can not provide the long-time work of sensor in the tire, lead to the problem of can only intermittent type nature to the car machine signals.

Description

An array energy-harvesting smart tire

technical field

The invention relates to the technical field of intelligent tires, in particular to an array energy-harvesting intelligent tire.

Background technique

With the development of the times, people's demand for car safety is increasing, cars are becoming more and more intelligent, and tire intelligence is particularly important as an important branch. Among them, TPMS monitoring tire pressure has reduced a lot because of tire safety problems. However, the tire is a relatively independent part compared to the whole vehicle, and the sensors inside the tire cannot be powered by the car battery.

At present, in order to supply power to the sensors inside the tires, the existing smart tires use various piezoelectric materials and various piezoelectric energy-harvesting structures to provide energy to the automotive sensors, but the power of the existing tire energy-harvesting equipment cannot provide the long-term stability of the sensors inside the tires. Working at all times, it can only send signals to the car machine intermittently, and the power supply effect is insufficient.

Contents of the invention

The purpose of the present invention is to provide an array energy-harvesting smart tire, which increases the piezoelectric efficiency of energy-harvesting, and provides more electricity for sensors and energy storage devices inside the tire within the same time period.

To achieve the above purpose, the present invention provides an array energy-harvesting smart tire, including a tire, a hub, two rings of electrodes, wires, an energy storage element sensor module, and multiple piezoelectric modules;

The hub is arranged inside the tire, and the two circles of electrodes are fixedly connected to the hub respectively, and are respectively located on the sides of the hub; the wires are respectively electrically connected to the two circles of the electrodes, and are located side; the energy storage element sensor module is fixedly connected to the wheel hub, and is electrically connected to the wire, and is located on the side of the wheel hub; a plurality of the piezoelectric modules are fixedly connected to the tire respectively, and respectively on the inside of the tire.

Wherein, the energy storage element sensor module includes a floating energy element, a rectification circuit, an energy storage circuit, a voltage stabilizing circuit and a first sensor;

The floating energy element is electrically connected to the wire, the rectifier circuit is electrically connected to the floating energy element, the energy storage circuit is electrically connected to the rectifier circuit, and the voltage stabilizing circuit is electrically connected to the energy storage circuit. connected, the first sensor is electrically connected to the voltage stabilizing circuit.

Wherein, the rectification circuit includes a diode D1, a diode D2, a diode D3 and a diode D4;

The anode of the diode D1 is connected to the floating energy element, the anode of the diode D2 is connected to the diode, the cathode of the diode D2 is connected to the cathode of the diode D1; the cathode of the diode D3 is connected to the anode of the diode D1, The anode of the diode D4 is connected to the anode of the diode D3, and the cathode of the diode D4 is connected to the anode of the diode D2.

Wherein, the energy storage circuit includes a capacitor C1; one end of the capacitor C1 is connected to the cathode of the diode D2, and the other end is connected to the anode of the diode D4.

Wherein, the voltage stabilizing circuit includes a capacitor C2, a voltage regulator U1 and a capacitor C3;

One end of the capacitor C2 is connected to the cathode of the diode D2, and the other end is connected to the anode of the diode D4; the input end of the voltage regulator U1 is connected to the capacitor C2, and the ground terminal of the voltage regulator is connected to the first Sensor connection; one end of the capacitor C3 is connected to the output end of the voltage regulator, and the other end is connected to the first sensor.

Wherein, the piezoelectric module includes a lower flexible protective film, a lower flexible sheet lead, a flexible piezoelectric material, an upper flexible sheet lead, and an upper flexible protective film;

The lower flexible sheet lead is arranged on one side of the lower flexible protective film, the flexible piezoelectric material is arranged on the side of the lower flexible sheet lead away from the lower flexible protective film, and the upper flexible sheet lead The flexible piezoelectric material is arranged on a side away from the lower flexible sheet lead, and the upper flexible protective film is arranged on a side of the upper flexible sheet lead away from the flexible piezoelectric material.

An array energy-harvesting smart tire of the present invention, the piezoelectric module is closely attached to the inner surface of the tire by pasting, the piezoelectric module is distributed around the tire center array, and after the tire is inflated, The rim of the tire is close to the hub, and there are two circles of electrodes on the hub, and the piezoelectric modules are in contact with the two circles of electrodes respectively. The present invention uses this structure to connect the piezoelectric modules distributed in an array in parallel, By connecting the piezoelectric modules of each array in parallel, energy is continuously provided for the sensors and energy storage devices in the tire; by setting the piezoelectric modules on the sidewall of the tire, the sidewall deforms the most as the entire tire rolls The position of the piezoelectric module increases the deformation amount of the piezoelectric module every time the tire rotates, thereby increasing the power output. Through the above method, the problem that the power of the existing tire energy harvesting equipment cannot provide the sensor in the tire to work for a long time, so that it can only send signals to the vehicle intermittently, the present invention provides an array structure and utilizes the mode, so that the tire can generate a certain amount of electricity every time it turns to a certain angle, so that the piezoelectric module can continuously generate electricity for the tire, making full use of the energy of the tire deformation, so that the power generation at each angle is more sufficient; at the same time The tire structure provides a way to mass-produce energy-harvesting tires. After the tires are worn out, by directly replacing the tires of this type without too much debugging, this type of tires can be used to meet the energy-harvesting requirements and reduce battery usage. Thereby reducing environmental pollution.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of a tire and multiple piezoelectric modules of the present invention.

Fig. 2 is a structural schematic diagram of the wheel hub, two-circle electrodes, wires and energy storage element sensor module of the present invention.

Fig. 3 is another structural schematic diagram of the wheel hub, two-circle electrodes, wires and energy storage element sensor module of the present invention.

Fig. 4 is a partially enlarged view of detail A in Fig. 3 .

Fig. 5 is a schematic structural diagram of the energy storage element sensor module of the present invention.

Fig. 6 is a schematic structural diagram of the piezoelectric module of the present invention.

1-tire, 2-hub, 3-electrode, 4-wire, 5-energy storage element sensor module, 6-piezoelectric module, 11-lower flexible protective film, 12-lower flexible sheet lead, 13-flexible piezoelectric Material, 14-upper flexible chip lead, 15-upper flexible protective film, 51-floating energy element, 52-rectification circuit, 53-energy storage circuit, 54-stabilizing circuit, 55-first sensor.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, in the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

Please refer to Figures 1 to 6, the present invention provides an array energy-harvesting smart tire: including a tire 1, a hub 2, two circles of electrodes 3, a wire 4, an energy storage element sensor module 5 and a plurality of piezoelectric modules 6;

The hub 2 is arranged inside the tire 1, and the two circles of the electrodes 3 are fixedly connected to the hub 2 respectively, and are respectively located on the sides of the hub 2; the wires 4 are electrically connected to the two circles of the electrodes 3 connected, and located on the side of the electrode 3; the energy storage element sensor module 5 is fixedly connected to the hub 2, and electrically connected to the wire 4, and located on the side of the hub 2; a plurality of the pressure The electrical modules 6 are respectively fixedly connected to the tires 1 and located inside the tires 1 respectively.

In this embodiment, the piezoelectric modules 6 are closely attached to the inner surface of the tire 1 by pasting, and the piezoelectric modules 6 are distributed in an array around the center of the tire 1. After the tire 1 is inflated, the The rim of the tire 1 is closely attached to the hub 2, and there are two circles of electrodes 3 on the hub 2, and the piezoelectric module 6 is in contact with the two circles of electrodes 3 respectively. The present invention uses this structure to distribute the The piezoelectric modules 6 are connected in parallel, and the piezoelectric modules 6 of each array are connected in parallel to continuously provide energy for the sensors and energy storage devices in the tire; The side is the most deformed part of the entire tire 1 during rolling, increasing the deformation of the piezoelectric module 6 each time the tire 1 rotates, thereby increasing the power output. Through the above method, the problem that the power of the existing tire energy harvesting equipment cannot provide the sensor in the tire to work for a long time, so that it can only send signals to the vehicle intermittently, the present invention provides an array structure and utilizes the mode, so that the tire 1 can generate a certain amount of electricity every time it turns to a certain angle, so that the piezoelectric module 6 can continuously generate electricity for the tire 1, and make full use of the energy of the deformation of the tire, so that the electricity generated at each angle is more Sufficient; at the same time, the structure of the tire 1 provides a way to mass-produce energy-harvesting tires. After the tires are worn out, the tires of this type can be directly replaced without excessive debugging, and the tires of this type can be used to meet the energy-harvesting requirements. , Reduce battery usage, thereby reducing environmental pollution.

Further, the energy storage element sensor module 5 includes a floating energy element 51, a rectification circuit 52, an energy storage circuit 53, a voltage stabilizing circuit 54 and a first sensor 55;

The buoyant energy element 51 is electrically connected to the wire 4, the rectifier circuit 52 is electrically connected to the buoyant energy element 51, the energy storage circuit 53 is electrically connected to the rectifier circuit 52, and the voltage stabilizing circuit 54 It is electrically connected to the energy storage circuit 53 , and the first sensor 55 is electrically connected to the voltage stabilizing circuit 54 .

In this embodiment, by setting the floating energy element 51, the rectifying circuit 52, the energy storage circuit 53, and the voltage stabilizing circuit 54, the alternating current generated by the floating energy element 51 is integrated, and the integrated After electric energy storage, make the electricity reach the rated voltage of the first sensor 55 through the voltage stabilizing circuit 54 to make the whole system work stably; the first sensor 55 preferably includes all sensors including the tire pressure sensor. The application can provide sufficient power, so more sensors can be installed in the tire 1, and the first sensor 55 can be selected according to actual needs.

Further, the rectification circuit 52 includes a diode D1, a diode D2, a diode D3 and a diode D4;

The anode of the diode D1 is connected to the floating energy element 51, the anode of the diode D2 is connected to the diode, the cathode of the diode D2 is connected to the cathode of the diode D1; the cathode of the diode D3 is connected to the anode of the diode D1 , the anode of the diode D4 is connected to the anode of the diode D3, and the cathode of the diode D4 is connected to the anode of the diode D2.

Further, the energy storage circuit 53 includes a capacitor C1; one end of the capacitor C1 is connected to the cathode of the diode D2, and the other end is connected to the anode of the diode D4.

Further, the voltage stabilizing circuit 54 includes a capacitor C2, a voltage regulator U1 and a capacitor C3;

One end of the capacitor C2 is connected to the cathode of the diode D2, and the other end is connected to the anode of the diode D4; the input end of the voltage regulator U1 is connected to the capacitor C2, and the ground terminal of the voltage regulator is connected to the first The sensor 55 is connected; one end of the capacitor C3 is connected to the output end of the voltage regulator, and the other end is connected to the first sensor 55 .

In this embodiment, the rectifier circuit 52, the energy storage circuit 53 and the voltage stabilizing circuit 54 connect the floating energy element 51 and the first sensor 55, and the rectifier circuit 52 passes through the diode D1 , the diode D2, the diode D3, and the diode D4 integrate the alternating current generated by the energy harvesting element, and the integrated electricity stores energy through the capacitor C1, and then passes through the voltage stabilizing circuit 54 to make the electric power reach The rated voltage of the first sensor 55 can make the whole system work stably.

Further, the piezoelectric module 6 includes a lower flexible protective film 11, a lower flexible sheet lead 12, a flexible piezoelectric material 13, an upper flexible sheet lead 14 and an upper flexible protective film 15;

The lower flexible sheet lead 12 is arranged on the side of the lower flexible protective film 11, the flexible piezoelectric material 13 is arranged on the side of the lower flexible sheet lead 12 away from the lower flexible protective film 11, the The upper flexible sheet lead 14 is arranged on the side of the flexible piezoelectric material 13 away from the lower flexible sheet lead 12, and the upper flexible protective film 15 is arranged on the side of the upper flexible sheet lead 14 away from the flexible piezoelectric material. Material 13 side.

In this embodiment, the lower flexible protective film 11 and the upper flexible protective film 15 are high-performance polyester materials, which can withstand the high temperature of the tire 1 and the severe deformation of the rubber of the tire 1. The flexible piezoelectric material 13 is not limited to PVDF is a material, and other new high-performance piezoelectric high-temperature resistant materials are also applicable. The flexible piezoelectric material 13 produced by the rotation of the flexible piezoelectric material 13 with the tire 1 Electric energy is drawn out, the lower flexible sheet lead 12 and the upper flexible sheet lead 14 are not in contact with each other, and this structure synthesizes the piezoelectric module 6 through packaging. This flexible structure can adapt to various types of tires and does not Affects the rotation of the tire. When the tire 1 rotates, the tire 1 is deformed due to the rolling and pressure of the tire 1, which drives the array type piezoelectric module 6 attached to the inner surface, and converts kinetic energy into electrical energy. The electrical energy can be drawn out through the wire 4 and stored in the The energy storage element sensor module 5 on the hub 2 or directly supplies power to the sensor; in the piezoelectric module 6, the upper flexible sheet lead 14 and the lower flexible sheet lead 12 have unequal lengths, The sheet lead wires can respectively correspond to the two circles of electrodes 3 on the hub 2 through structures with unequal lengths. After the tire 1 is inflated, the steel ring of the tire 1 is close to the hub 2, and the hub 2 There are two circles of electrodes 3 on it, and the sheet lead wires are in contact with the two circles of electrodes 3 respectively, which provides a possibility of intelligent mass production and facilitates the disassembly and assembly of smart car tires 1; Connect the piezoelectric modules 6 distributed in the array in parallel, and continuously provide energy for the sensors and energy storage devices in the tire by connecting each array module in parallel; in this invention, the array piezoelectric modules 6 are arranged on the sidewall of the tire 1. The portion of the entire tire 1 that deforms the most during rolling increases the amount of deformation of the piezoelectric module 6 each time the tire 1 rotates, thereby increasing the power output.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the process for realizing the above embodiments, and according to the rights of the present invention The equivalent changes required still belong to the scope covered by the invention.

Claims (6)

1. An array energy-harvesting smart tire, characterized in that, Including tires, wheels, two-ring electrodes, wires, energy storage element sensor modules and multiple piezoelectric modules; The hub is arranged inside the tire, and the two circles of electrodes are fixedly connected to the hub respectively, and are respectively located on the sides of the hub; the wires are respectively electrically connected to the two circles of the electrodes, and are located side; the energy storage element sensor module is fixedly connected to the wheel hub, and is electrically connected to the wire, and is located on the side of the wheel hub; a plurality of the piezoelectric modules are fixedly connected to the tire respectively, and respectively on the inside of the tire. 2. A kind of array energy-harvesting intelligent tire as claimed in claim 1, is characterized in that, The energy storage element sensor module includes a floating energy element, a rectifier circuit, an energy storage circuit, a voltage stabilizing circuit and a first sensor; The floating energy element is electrically connected to the wire, the rectifier circuit is electrically connected to the floating energy element, the energy storage circuit is electrically connected to the rectifier circuit, and the voltage stabilizing circuit is electrically connected to the energy storage circuit. connected, the first sensor is electrically connected to the voltage stabilizing circuit. 3. The smart tire of a kind of array energy harvesting as claimed in claim 2, is characterized in that, The rectification circuit includes a diode D1, a diode D2, a diode D3 and a diode D4; The anode of the diode D1 is connected to the floating energy element, the anode of the diode D2 is connected to the diode, the cathode of the diode D2 is connected to the cathode of the diode D1; the cathode of the diode D3 is connected to the anode of the diode D1, The anode of the diode D4 is connected to the anode of the diode D3, and the cathode of the diode D4 is connected to the anode of the diode D2. 4. A kind of array energy-harvesting intelligent tire as claimed in claim 3, is characterized in that, The energy storage circuit includes a capacitor C1; one end of the capacitor C1 is connected to the cathode of the diode D2, and the other end is connected to the anode of the diode D4. 5. A kind of array energy-harvesting intelligent tire as claimed in claim 4, is characterized in that, The voltage stabilizing circuit includes a capacitor C2, a voltage regulator U1 and a capacitor C3; One end of the capacitor C2 is connected to the cathode of the diode D2, and the other end is connected to the anode of the diode D4; the input end of the voltage regulator U1 is connected to the capacitor C2, and the ground terminal of the voltage regulator is connected to the first Sensor connection; one end of the capacitor C3 is connected to the output end of the voltage regulator, and the other end is connected to the first sensor. 6. A kind of array energy-harvesting intelligent tire as claimed in claim 5, is characterized in that, The piezoelectric module includes a lower flexible protective film, a lower flexible sheet lead, a flexible piezoelectric material, an upper flexible sheet lead and an upper flexible protective film; The lower flexible sheet lead is arranged on one side of the lower flexible protective film, the flexible piezoelectric material is arranged on the side of the lower flexible sheet lead away from the lower flexible protective film, and the upper flexible sheet lead The flexible piezoelectric material is arranged on a side away from the lower flexible sheet lead, and the upper flexible protective film is arranged on a side of the upper flexible sheet lead away from the flexible piezoelectric material.

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