39 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 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.

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 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.

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.

The invention provides a braking energy recovery and storage system for a new energy automobile. The braking energy recovery and storage system comprises an intelligent control system, a multi-working-condition sensor group, a composite energy conversion mechanism, an intelligent energy storage unit and an interactive display terminal, the multi-working-condition sensor set comprises a brake signal sensor, a clutch signal sensor, an accelerator signal sensor, a vehicle speed signal sensor and a road condition sensor. According to the new energy automobile braking energy recovery and storage system, by adopting the combined design of the electromagnetic generator and the piezoelectric generator, the advantages of the two generators under different working conditions are fully played, and the energy recovery efficiency is greatly improved; no matter under the high-speed braking condition or the low-speed bumping condition, mechanical energy can be effectively converted into electric energy, and compared with a traditional single generator system, the energy recovery efficiency can be effectively improved.

The application provides a direct-current output Schottky diode sensor for continuously testing static pressure and a preparation method and application thereof. The inside of the sensor is sequentially provided with a first electrode, n-type germanium and a second electrode from top to bottom, and the outside of the sensor is packaged with a resin film. The work function of the first electrode is 4.0-4.4 eV, and the first electrode forms an ohmic contact with the n-type germanium. The work function of the second electrode is greater than 4.4 eV, and the second electrode forms a Schottky contact with the n-type germanium. The thickness of the n-type germanium is 0.7-3.5 mm, the thickness of the first electrode is 0.1-1 mm, and the thickness of the second electrode is 0.1-1 mm. The application breaks through the limitation that a traditional piezoelectric generator needs dynamic stimulation and generates an instantaneous alternating current signal, and realizes continuous output of direct current under static pressure. The application can be applied to multiple fields as a self-powered sensor and is used for long-term monitoring of static mechanical stimulation.

The invention provides a direct-current output Schottky diode sensor for continuously testing static pressure and a preparation method and application of the direct-current output Schottky diode sensor, a first electrode, n-type germanium and a second electrode are sequentially arranged on the inner side of the sensor from top to bottom, and a resin film is packaged on the outer side of the sensor; the work function of the first electrode is 4.0-4.4 eV, and the first electrode and the n-type germanium form ohmic contact; the work function of the second electrode is greater than 4.4 eV, and the second electrode and the n-type germanium form Schottky contact; the thickness of the n-type germanium ranges from 0.7 mm to 3.5 mm, the thickness of the first electrode ranges from 0.1 mm to 1 mm, and the thickness of the second electrode ranges from 0.1 mm to 1 mm. The limitation that a traditional piezoelectric generator needs to be dynamically stimulated and generate instantaneous alternating current signals is broken through, and direct current is continuously output under the static pressure condition. The sensor can be applied to multiple fields as a self-powered sensor and is used for monitoring static mechanical stimulation for a long time.

The utility model relates to the technical field of well lids, and discloses a well lid capable of realizing self-charging, which comprises a well lid seat and a well lid body arranged on the well lid seat, a placing ring used for placing the well lid body is fixed on the inner side of the well lid seat, a positioning groove is arranged on the placing ring, and the well lid body is arranged in the positioning groove. A positioning groove is formed in the bottom of the well lid base, a positioning block matched with the positioning groove is fixed to the bottom of the well lid body, a piezoelectric generator is arranged at the bottom of the well lid body, a cavity is formed in the well lid base, insect repelling liquid is arranged in the cavity, a plurality of atomizing nozzles are arranged at the bottom of the containing ring, and the connecting pipe communicates with all the atomizing nozzles. When the well lid capable of achieving self-charging is applied, the device can effectively prevent insects and mice from entering buildings such as residential buildings through the well lid by means of the insect repelling liquid while generating electricity, meanwhile, the insects and the mice are prevented from entering electronic equipment such as the piezoelectric generator, normal operation of the device is prevented from being affected by the insects and the mice, and maintenance cost is reduced.

This document describes an energy generation system (100) for a vehicle. The system (100) comprises a grille assembly (100A) configured for installation in the vehicle. The grille assembly (100A) includes a first grille (102) comprising one or more openings (O) configured with one or more movable flaps (104), and a second grille (106) positioned behind the first grille (102) with a predefined gap between them, the second grille (106) comprising one or more piezoelectric generators (108). The grille assembly (100A) is configured to direct a pulsating airflow onto the one or more piezoelectric generators (108), which accordingly generate electrical energy.