50 results about "Piezoelectric generator" patented technology

Electric generators are described herein integrating thermoelectric and piezoelectric components. In some embodiments, an electric generator comprises a thermoelectric film having a plurality of lateral p-n junctions across a face of the film, the lateral p-n junctions established at interfaces between p-type regions and n-type regions. A piezoelectric film is coupled to the thermoelectric film and an electrode is coupled to the piezoelectric film.

The invention relates to a multi-degree-of-freedom composite wave energy converter, and belongs to the technical field of wave power generation. Comprising a mounting frame and a power generation assembly, and the power generation assembly comprises an electromagnetic power generation unit, a nanometer friction power generation unit and a piezoelectric power generation unit; the electromagnetic power generation unit comprises a gravity pendulum and an electromagnetic generator; the gravity pendulum is rotationally mounted on the mounting frame around the gravity center axis of the wave energy converter, and one end of the gravity pendulum is connected with a rotor of the electromagnetic generator; the nanometer friction power generation unit comprises a plurality of power generation parts made of friction materials, the power generation parts are installed on the installation frame, and under the action of external force, the power generation parts move relatively to generate electric energy; the piezoelectric power generation unit comprises a piezoelectric generator and a water flow turbine; a rotor shaft of the piezoelectric generator is connected with the water flow turbine, a rotor of the piezoelectric generator is made of piezoelectric materials, and magnets are arranged on the rotor and a stator respectively. The multi-degree-of-freedom wave capturing device can comprehensively and efficiently capture waves in multiple degrees of freedom, and is high in energy conversion efficiency and wide in application range.

The invention discloses an integrated floating platform system for multi-source ocean energy cooperative power generation and photovoltaic hydrogen production. The integrated floating platform system comprises a mooring power generation system, a photovoltaic hydrogen production platform and a vortex-induced vibration piezoelectric power generation system. The mooring power generation system comprises a mooring cable with an elastic cable, and the elastic cable is connected with a piezoelectric power generation device in series. The mooring rope is connected with the wave energy power generation anchor; the piezoelectric power generation device comprises an elastic unit connected in series on the elastic cable; the wave energy power generation anchor comprises a shell, the shell comprises a main cavity, and the main cavity communicates with branch cavities; an elastic film covers the opening of the sub-chamber; the main chamber and the branch chambers are divided into a first air passage and a second air passage; an air turbine is arranged in the first air channel; the first air channel is connected with a communicating pipe; a check valve is arranged between the communicating pipe and the first air channel; the vortex-induced vibration piezoelectric power generation system comprises an air cylinder with a piston rod, the piston rod is connected with an oscillation floater, an air turbine is arranged in the air cylinder, a second piezoelectric plate is arranged outside the air cylinder, and a spoiler is arranged at the end of the second piezoelectric plate. According to the invention, integration of offshore power generation and hydrogen production is realized, and the energy utilization rate is improved.

The invention belongs to the field of bionic electronic materials and application, and discloses a dipeptide amino acid sequence with a piezoelectric effect, a dipeptide piezoelectric fiber film is prepared from the dipeptide amino acid sequence through a drop casting method, a meniscus driving method and an electric field induction meniscus driving method, and the obtained fiber film is assembled into an application example of a piezoelectric generator. The amino acid sequence of the dipeptide with the piezoelectric effect is Fc-L-Phe-L-Phe-OH, in the formula, Fc is a ferrocene benzoic acid group, Phe represents phenylalanine, and L represents the chirality of used amino acid. The dipeptide micron fiber thin film which is large in area and closely arranged is prepared by utilizing a drop casting method, a semilunar driving method and various methods of introducing a regulation and control electric field in a semilunar driving method membrane preparation process. The obtained fiber film is assembled into a piezoelectric generator of a sandwich structure, the piezoelectric output performance of the piezoelectric generator is closely related to the preparation method of the fiber film, and the piezoelectric performance of the dipeptide fiber film can be remarkably improved through an electric field induction meniscus driving method.

The invention discloses pure-phase bismuth ferrite-strontium titanate ceramic as well as a preparation method and application thereof, and belongs to the field of lead-free ferroelectric ceramic. Comprising the following steps: filling pure-phase BFO-STO precursor powder prepared by a hydrothermal method into a graphite mold, controlling the heating rate to a sintering temperature, and sintering under the conditions of external pressure and heat preservation, so as to finally prepare the BFO-STO ceramic. The BFO-STO ceramic is prepared through SPS sintering, volatilization of Bi < 3 + > and generation of impure phases are effectively inhibited, ferroelectric, dielectric and magnetic properties of the BFO ceramic are effectively improved, and possibility is provided for practical application of the BFO-STO ceramic in the fields of functional sensors, magnetic memories, piezoelectric generators, high-temperature inductors and the like.

The invention discloses a two-direction anisotropic enhanced piezoelectric vibration energy acquisition structure, which is characterized in that a two-direction anisotropic composite material of which the strength in the thickness direction is greatly enhanced is attached to the upper surface and the lower surface of a cantilever beam, and then a flexible piezoelectric material is attached to the surface of the material, so that the strain amplitude in the thickness direction is reduced as much as possible; the strain amplitude in the length direction is increased, so that the vibration energy collection efficiency is improved. Moreover, the structure is suitable for cantilever beam type piezoelectric generators with different sizes and different environment requirements, has higher energy collection efficiency, and is easy to produce in batches.

A sensor-enabled component of a joint replacement prosthesis comprises a housing, a plurality of electric generators, and a displacement transmission post disposed between each electric generator and the housing. The sensor-enabled component contacts another component of the prosthesis such that there is a load transmission between the sensor-enabled component and the other component. Each electric generator comprises a piezoelectric generator or a triboelectric generator and includes spaced-part first and second electrode plates and configured to generate an electrical output based on relative movement between the spaced-apart first and second electrode plates. Each displacement transmission post is configured to transmit a motion caused by an external force acting on the outer surface of the housing to the associated electric generator to cause relative movement of the second electrode plate with respect to the first electrode plate of one or more of the plurality of electric generators.

The invention relates to a method and system for storing electrical energy produced by piezoelectric generators. The technical result, which consists in the continuous operation of the system, is possible when the transition between charge and discharge cycles in storage batteries occurs without disconnection from consumers. This is enabled by conditions for mechanical-to-electrical energy conversion which are continuously maintained over a long period of time or which recur repeatedly, as well as by the nature of a mechanical load that permits the storage of electrical energy with high values. The proposed invention also aims to encourage representatives of industrial enterprises to engage in experimentation so as to broaden the list of piezo material-based products capable of satisfying all warranted demands (see point 3.2 of the description), since it is only through the efforts of all interested parties that access to an ever-increasing volume of cutting-edge technical achievements will be provided, as all parties to the Patent Cooperation Treaty of 19 June 1970 "desiring to make a contribution to the progress of science and technology" will agree.

The invention provides a piezoelectric generator and a manufacturing method thereof. The piezoelectric generator includes one or more unit structures each including a substrate having a larger area than a piezoelectric element disposed thereon and a printed circuit board electrically connected to at least two surfaces of the element. Optionally, the substrate is stainless steel (SUS), and the piezoelectric element is attached with an adhesive. Multiple unit structures may be stacked with a thermoplastic polyurethane film therebetween, and a clamp may be provided to distribute load. The manufacturing method includes polarizing the piezoelectric element, bonding the piezoelectric element to the substrate with an adhesive, attaching the printed circuit board, optionally degassing and thermocuring, and repeating these steps for the layered structure.

The present invention belongs to the field of generator technology, and particularly relates to a hybrid nanogenerator and its power management circuit. The nanogenerator comprises a housing and an electromagnetic generator unit, a triboelectric generator unit, and a piezoelectric generator unit located within the housing; and a corresponding power management circuit. A glass fiber coupling extends through the housing, connecting the top and bottom ends. The triboelectric generator unit, the electromagnetic generator unit, and the piezoelectric generator unit are sequentially mounted on the fiberglass coupling relative to the bottom end of the housing. The piezoelectric generator unit comprises at least four cantilevers and a disk, one end of the cantilever being fixed to the disk, and a mass placed on the top surface of the other end. The center of the disk is connected to the fiberglass coupling, and the inner surfaces of the top surfaces of the four cantilevers are coated with PZT material. The hybrid nanogenerator of the present invention can convert vibration energy in the environment into electrical energy and power wireless sensor network nodes.

The present application relates to a kind of multi-degree-of-freedom compound wave energy converter, belong to wave power generation technical field.The installation frame and power generation component, power generation component includes electromagnetic generator unit, nanometer friction power generation unit and piezoelectric power generation unit;Electromagnetic generator unit includes gravity pendulum and electromagnetic generator;Gravity pendulum is installed in installation frame around wave energy converter gravity center axis rotation, and one end is connected with the rotor of electromagnetic generator;Nanometer friction power generation unit includes several power generation components containing friction material, power generation component is installed in installation frame, and under the action of external force, relative motion occurs between power generation component, to generate electric energy;Piezoelectric power generation unit includes piezoelectric generator and water flow turbine;The rotor shaft of piezoelectric generator is connected with water flow turbine, and its rotor is made of piezoelectric material, and magnet is respectively arranged on rotor and stator.The present application can be fully and efficiently captured on multiple degrees of freedom to wave, energy conversion efficiency is high and the scope of application is wide.

The invention relates to a process for pulse-based electricity generation to power a square-pulse electric motor by coupling same to a permanent-magnet generator, wherein the generation process involves a water storage tank, an ionisation chamber, a chamber with a magnetic rotor and injection of water containing copper ions, a dissociation chamber, a water compression chamber, bellows and an arrangement of piezoelectric generators, an electric coupling, a square-pulse motor, and a magnetic generator coupled to the square-pulse motor.

This counting device (1) for counting a number of mechanical cycles performed by a moving part in cyclic movement, comprises a storage module (4) for storing the number of mechanical cycles performed by the moving part, a detection module (3) for detecting a mechanical cycle performed by the moving part capable of incrementing the number stored in the storage module (4), and a transmission module on demand (5) of the stored number capable of retrieving the number stored in the storage module (4), the detection module (3) comprising a piezoelectric generator (6) configured to determine a performance of a mechanical cycle by the moving part, and the transmission module on demand (5) comprising an RFID tag (12) equipped with an antenna (13). Figure for the abstract: Fig 1

The invention relates to a triboelectric-piezoelectric mixed liquid drop energy collection device based on a cantilever beam structure, and solves the technical problem of how to improve the energy conversion efficiency of a liquid drop friction type power generation energy collection device, the triboelectric-piezoelectric mixed liquid drop energy collection device comprises a fixed base, a cantilever beam and a friction power generation sheet, the cantilever beam is fixedly connected with the fixed base, and the cantilever beam is fixedly connected with the friction power generation sheet. The friction power generation piece is connected with the cantilever beam, the friction power generation piece is arranged in the vertical direction and is perpendicular to the cantilever beam, the cantilever beam comprises an upper electrode layer, a piezoelectric piece and a lower electrode layer, the piezoelectric piece is located between the upper electrode layer and the lower electrode layer, and the friction power generation piece comprises a left friction layer, a middle electrode layer, a right friction layer and a conducting strip. The conducting strip is connected with the right friction layer. The method is suitable for scenes of self-powered sensing systems, micro-system energy supply, embedded energy modules and the like.

The utility model relates to the technical field of cable cleaning, in particular to a cable cleaning mechanism and a support adjusting device thereof, which comprise a moving part, a cable, a mounting component arranged on the cable, a limiting component arranged on the mounting component and a clamping component arranged on the limiting component, the clamping assembly is arranged on the mounting assembly, the sliding assembly is arranged on the clamping assembly, the cleaning component comprises a cleaning assembly arranged on one side of the mounting assembly and a connecting assembly arranged on the cleaning assembly, the device is driven by the sliding assembly to move on a cable, so that the cable is cleaned by the cleaning assembly, and an air piezoelectric generator set is connected to the connecting assembly. According to the cable cleaning device, high-pressure gas is sprayed on a cable for pre-cleaning, impurities on the surface of the cable are treated, washing water is sprayed into a sealing gasket through the steam pressure tank at any time, and therefore when the cable cleaning device moves, the sealing gasket rubs against the cable, and oil stains on the cable are removed.

The present invention discloses a wind energy power generation device utilizing vortex-induced vibration, belonging to the technical field of wind power generation. The device includes a wind energy collection and power generation mechanism and a fixed support mechanism. The fixed support mechanism includes an outer cylinder and a support circular base. The wind energy collection and power generation mechanism includes an energy collection plate, an elastic plate, a motion conversion device, a vertical plate, a connection support, a connection plate, a gear shaft, a large gear, a driving gear, a ratchet wheel, a support plate, a piezoelectric generator, and an electromagnetic generator. The present invention utilizes wind to excite the vibration of the energy collection plate to convert wind energy into mechanical energy, and then uses electromagnetic and piezoelectric energy harvesting methods to convert mechanical energy into electrical energy. The power generation device of the present invention has the characteristics of small volume, low cost, long service life, and convenient later maintenance. Moreover, the power generation device has a short infrastructure period and a flexible installation scale.

An article of apparel, a system, and methods include a structural material configured to enable the article of footwear to the worn on a body. A wireless transmission circuit is included and a piezoelectric generator is positioned with respect to the structural material in a configuration to be flexed to induce a voltage signal output. A voltage sensor is configured to sense the voltage profile and output a sensor signal indicative of the voltage profile. An electronic data storage, coupled to the voltage sensor, is configured to store voltage profile information based on the sensor data. A comparator, coupled to the electronic data storage, is configured to identify a change in the voltage profile information over time. The wireless transmission circuit is configured to transmit data indicative of a physical status of the article of footwear based on the change in the voltage profile information over time.

The present invention discloses a resonant piezoelectric power generation system, comprising a piezoelectric generator, a resonant inductor L, a bridge rectifier circuit, a self-powered switch circuit and a charge extraction circuit which are electrically connected in series in sequence, and each part is electrically connected in series to form an overall circuit of the resonant piezoelectric power generation system. The automatic control of the system of the present invention is achieved by the self-power supply and automatic closing and opening of the self-powered switch circuit; by adding a resonant inductor L to the overall circuit and optimizing the design of the resonant inductor L, an optimal resonant inductance value can be obtained, which greatly improves the power conversion efficiency of the traditional synchronous charge extraction circuit. The present invention also discloses a resonant inductance optimization method for a resonant piezoelectric power generation system; the optimal resonant inductor used can greatly increase the output voltage of the piezoelectric generator, improve the AC-DC conversion efficiency of the traditional synchronous charge extraction circuit for piezoelectric power generation, achieve efficient vibration piezoelectric power generation, and thus improve the power conversion efficiency of the system.

Disclosed in the present invention are a bio-piezoelectric layer, a method for manufacturing the bio-piezoelectric layer, a piezoelectric generator comprising same, and a method for manufacturing the piezoelectric generator. The present invention comprises: a substrate; and a diphenylalanine crystal layer formed on the substrate and containing diphenylalanine crystals, wherein the diphenylalanine crystals comprise at least one of a non-centrosymmetric orthorhombic structure and a morphotropic phase boundary (MPB) structure.

The invention relates to the technical field of micro-power-consumption energy collection, in particular to a micro-power-consumption energy collection circuit integrating the functions of micro-power-consumption energy collection and storage, micro-power-consumption output control and output voltage stabilization control. According to the circuit, high-precision and low-power-consumption energy collection and control elements are adopted, and it is ensured that high energy collection efficiency can still be obtained in the extremely-low-power-consumption operation state. Meanwhile, all the units work cooperatively, and concentrated collection and effective utilization of micro-power energy are achieved. The circuit can be widely applied to various internet-of-things terminal devices and the like, can be matched with a low-power photovoltaic panel, a piezoelectric power generation piece, a small-size wind driven generator, temperature difference power generation equipment, a nuclear battery and the like to collect weak energy, can intermittently and centrally release voltage-stabilized high power, and can provide powerful technical support for internet-of-things application scenes.

The present invention discloses a wind energy collection device utilizing vortex-induced vibration, and belongs to the technical field of wind power generation; the device of the present invention comprises an energy collection plate, a motion conversion device, an elastic plate, a rotating shaft support plate, a swing arm, a connecting support, a supporting cylinder, a connecting plate, a motion amplification mechanism and a fixed support; when airflow blows through the energy collection plate, a shedding vortex is generated, and the alternating swing of the shedding vortex causes the energy collection plate to swing, and this swing is transmitted to the elastic plate and the swing arm through the motion conversion device, causing the elastic plate and the swing arm to rotate; the two ends of the elastic plate are connected to a piezoelectric generator, and the rotation of the elastic plate causes the deformation of the end of the elastic plate, and the generated pressure generates electricity on the piezoelectric generator; the rotation of the swing arm is transmitted to the motion amplification mechanism, and electromagnetic power generation is performed through the cooperation between the arc-shaped rack and the gear. The device of the present invention can be used in remote and inaccessible places to power small-power electrical appliances and instruments.

The present invention discloses a piezoelectric generator with a dual-crystal torsion beam unit, which includes a generator base, and a rotor assembly and a torsion vibration assembly arranged on the generator base; the rotor assembly includes a rotating shaft with a bearing arranged on the central axis of the generator base, and a rotating disk coaxially fixedly mounted on the rotating shaft, and a plurality of excitation teeth are evenly distributed on the outer edge of the rotating disk; the torsion vibration assembly includes a plurality of dual-crystal torsion vibration beams arranged circumferentially on the generator base with the rotating shaft as the central axis, and a piezoelectric sheet is arranged on each dual-crystal torsion vibration beam; and one end of the dual-crystal torsion vibration beam is fixedly arranged, and the other free end part extends into the tooth groove between two adjacent excitation teeth. Therefore, when the rotating shaft drives the rotating disk to rotate, the excitation tooth drives the dual-crystal torsion vibration beam to torsionally vibrate through the undulating free end, and then the piezoelectric sheet arranged on the dual-crystal torsion vibration beam undergoes torsion shear deformation under the torsional elastic shearing action of the dual-crystal torsion vibration beam, thereby generating current.

The present invention provides a hybrid power bank. The power bank includes a housing, a vibration assembly, a piezoelectric generator, and a charging port. The vibration assembly and the piezoelectric generator are both located within the housing, and the charging port is located on the housing. The first end of the piezoelectric generator is detachably connected to the inner wall of the housing, and the first end of the piezoelectric generator is electrically connected to the charging port. The vibration assembly is connected to the second end of the piezoelectric generator, and the vibration assembly is capable of vibrating within the housing. When the vibration assembly vibrates, it drives the piezoelectric generator to vibrate, generating electrical energy, which is then transferred to the charging port.

A piezoelectric and thermoelectric solar panel assembly includes a solar panel, a cold mirror, and a support panel. The piezoelectric and thermoelectric solar panel assembly also includes piezoelectric generator assembly disposed between the cold mirror and the support panel. The piezoelectric and thermoelectric solar panel assembly further includes a thermoelectric power generation module beneath the cold mirror.

The present invention discloses an environmental micro-energy harvesting test system based on piezoelectric energy harvesting, belonging to the field of piezoelectric energy. The system includes an intelligent classification module, a test construction module, a test determination module, and a data extraction module. The test construction module is used to construct an environmental micro-energy harvesting scenario for piezoelectric energy harvesting according to different test parameters. The intelligent classification module is used to intelligently classify several groups of environmental micro-energy harvesting scenarios for piezoelectric energy harvesting. The data acquisition module is used to acquire the real-time circuit data of the piezoelectric generator connected to the energy storage capacitor in the test platform under several groups of environmental micro-energy harvesting scenarios. The data extraction module is used to extract the environmental micro-energy harvesting scenarios in the first fixed set of test elements, the second fixed set of test elements, the third fixed set of test elements, and the fourth fixed set of test elements. The display module is used to display the first test element, the second test element, and the third test element of the target environmental micro-energy harvesting scenario.

The invention belongs to the field of bionic electronic materials and application, and discloses four dipeptide amino acid sequences with a piezoelectric effect, preparation of a dipeptide self-assembly micron fiber array piezoelectric film, and application examples of the fiber array film as a piezoelectric generator. The amino acid sequences of the four dipeptides are Boc-L-Ile-L-Phe-OMe (BLILE), Boc-L-Ile-D-Phe-OMe (BLIDE), Boc-L-Ile-L-Phg-OMe (BLILP) and Boc-L-Ile-D-Phg-OMe (BLIDP) respectively, and Phg represents phenylglycine and is a non-natural amino acid. The dipeptide self-assembled micron fiber array film with large area, consistent orientation and compact arrangement is prepared by a semilunar driving film forming method. The prepared micron fiber array film is assembled into a piezoelectric generator of a sandwich structure, and effective conversion from mechanical energy to electric energy is achieved.

The present application provides a power generation device and detection system. The power generation device includes: a first fixing member, a second fixing member, a floating plate assembly, a piezoelectric generator, and a power management module. The first fixing member and the second fixing member are both fixed to the floating plate assembly, and the first fixing member and the second fixing member are spaced apart. The first end of the piezoelectric generator is connected to the first fixing member, the second end of the piezoelectric generator is connected to the second fixing member, and the first end or the second end of the piezoelectric generator is electrically connected to the power management module. The power management module is configured to be electrically connected to a detection device, and the floating plate assembly is configured to float on a liquid surface. When the floating plate assembly floats on the liquid surface, the floating plate assembly drives the first fixing member and the second fixing member to swing, causing the piezoelectric generator to bend and generate electrical energy, which is then transmitted to the power management module.

The invention belongs to the technical field of highway power generation devices, and particularly relates to a highway pavement deceleration strip piezoelectric power generation mechanism which comprises a power generation module and a plurality of pressure modules, the pressure modules are sequentially connected, and the pressure module located at the first position is connected with the power generation module; the pressure module comprises a fixed base and a deformation cavity, the deformation cavity is fixedly connected with the fixed base, and a power generation bin used for containing a mechanical pressure power generation assembly is formed between the fixed base and the cavity; and a non-Newtonian fluid is accommodated in the deformation cavity. According to the deceleration strip pressure power generation mechanism, a modular splicing structure is adopted, the splicing number can be selected according to needs, and therefore the purpose of adjusting the installation length is achieved; and meanwhile, the modularized structure is convenient to transport. According to the structural arrangement of the pressure module, the mechanical pressure power generation assembly is placed in the power generation bin instead of being separately arranged in the prior art; and the overall height is reduced, and the sealing characteristic is achieved.

A wearable article, a system, and methods include a structural material configured to enable the wearable article to the worn on a body, a piezoelectric generator, positioned with respect to the structural material in a configuration to be flexed to output a voltage, a data translator, coupled to the piezoelectric generator, configured to output electronic data based on the voltage, and an electronic data storage, coupled to the data translator, configured to store the electronic data from the data translator.

The present invention relates to the field of alarm technology, and specifically to an alarm device for an offshore power generation system, comprising a detection module; the detection module comprises a detector and a plurality of adhesives; the detector comprises a base, a connecting frame, an impact tube, an impact head, a piezoelectric generator, a ceramic sealing shell and a first communication module, the base is provided with an inverted frustum-shaped ventilation hole which is larger at the top and smaller at the bottom, and the impact tube is connected to the base through the connecting frame; the piezoelectric generator and the first communication module are electrically connected; the impact head is arranged in the impact tube; the piezoelectric generator is connected to the impact head; the ceramic sealing shell sealing sleeve is arranged in the impact tube and wraps the impact head therein; the present invention meets the alarm needs of different equipment by setting adhesives with different melting zones and installing detectors according to different alarm temperatures; the sealing is ensured by the ceramic sealing shell; through the arrangement of the piezoelectric generator and the first communication module, the impact causes the piezoelectric generator to be squeezed and activates the first communication module to send a signal.