18 results about "Piezoelectric generator" patented technology

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.

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 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 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.

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.

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 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.

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 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.

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.

The invention relates to the field of piezoelectric ceramic materials, in particular to a ternary system piezoelectric ceramic material and a preparation method thereof, the chemical structural general formula of the ternary system piezoelectric ceramic material is shown as follows: alphaPb (Mg1 / 3Nb2 / 3) O3-(1-alpha) Pb (ZrxTi1-x) O3-ywt.% BiScO3-zwt.% Li2MO4: Ln, Ln is a lanthanide rare earth element, M is Mo or W, and the sum of the chemical structural general formula of the ternary system piezoelectric ceramic material and the chemical structural general formula of the ternary system piezoelectric ceramic material and the chemical structural general formula of the ternary system piezoelectric ceramic material is 100%. 0.3 < = x < = 0.6; 0 < alpha < = 0.3; x is more than or equal to 0.5 and less than or equal to 5, y is more than or equal to 0.5 and less than or equal to 5, z is more than or equal to 1 and less than or equal to 3, and tests show that the prepared piezoelectric ceramic has good piezoelectric property and a relatively high mechanical quality factor, can be used as a functional material of a high-power emission type, a high-power piezoelectric generator, a piezoelectric transformer and the like, and is widely applied to electromechanical transformation systems such as a sonar system, an ultrasonic atomization system, an ultrasonic vibration system and the like.

The utility model provides a multipurpose squealer, which comprises a squealer shell, a first piezoelectric patch arranged in the squealer shell and a cover plate structure used for sealing an end opening of the squealer shell, and a sound hole structure is arranged at the position, corresponding to the central area of the first piezoelectric patch, of the squealer shell. A first piezoelectric plate is arranged in the squealer shell, a second piezoelectric plate is further arranged in the squealer shell, a preset distance is reserved between the first piezoelectric plate and the second piezoelectric plate, the first piezoelectric plate is a low-frequency piezoelectric plate, the second piezoelectric plate is a high-frequency piezoelectric plate, another piezoelectric plate is additionally arranged in the squealer shell, one of the piezoelectric plates is responsible for sounding in a low-frequency area, and the other piezoelectric plate is responsible for sounding in a high-frequency area. The shape of the cavity is guaranteed to meet the sounding requirement of the second piezoelectric plate through the space in the squealer shell, airflow vibration of the second piezoelectric plate is effectively guided by utilizing the Helmholtz resonance cavity principle, normal sounding work of the two piezoelectric plates with different working frequencies is guaranteed, and the sounding frequency range of the piezoelectric generator is widened.

The invention relates to a method and a system for storing electric energy generated by a piezoelectric generator. The technical result, i.e., the continuous operation of the system, is achieved by allowing the charge-discharge cycle conversion of the storage battery to be achieved without disconnecting the battery from the electrical equipment. A long-term continuous or repeated mechanical energy-to-electric energy conversion condition and a mechanical load characteristic capable of realizing efficient accumulation of electric energy are made possible. The invention also aims to excite industrial enterprises to carry out experimental work so as to expand the range of piezoelectric material products capable of meeting reasonable requirements (see the item 3.2 in the specification). Only under the common effort of all related parties, the continuously increasing advanced technical achievements can be ensured, which accords with the purpose that 'Patent Cooperative Strip' June 19, 1970 is expected to make contributions to scientific and technological progress'.

The application discloses a gel-based biocompatible wearable light-emitting display device and a preparation method thereof. A power supply unit is a piezoelectric gel with biocompatibility, and a display light-emitting device is realized based on an ionic gel electroluminescent material. The gel electroluminescent material constructed device can be directly powered and light-emitted by a piezoelectric generator driven by a semi-solid gel electrolyte, and the two devices are integrated in a vertical stacking mode. The piezoelectric generator device structure is constructed in a three-layer structure from bottom to top, i.e. a biocompatible bottom ionic gel electrode, a hydrogel and a top gel electrode. The display light-emitting device structure adopts a sandwich structure of a bottom ionic gel electrode, a fluorescent powder doped elastomer as a light-emitting layer and a top ionic gel electrode. The device has a certain mechanical deformation performance and can be comfortably worn on different parts of the human body. The piezoelectric effect of the gel is used to collect the mechanical energy of the human body and convert it into electrical energy to drive the electroluminescent device.

A piezoelectric generator includes one or more unit structures, each including a substrate with an area larger 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 intervening thermoplastic polyurethane films, and a jig can be provided to distribute loads. A method of manufacturing includes polarizing the piezoelectric element, bonding it to the substrate with an adhesive, attaching the printed circuit board, optionally degassing and thermally curing, and repeating these steps for layered structures.