150results about How to "Improve energy conversion efficiency" patented technology

Techniques for improving energy conversion efficiency in photovoltaic devices are provided. In one aspect, an antimony (Sb)-doped film represented by the formula, Cu_1-yIn_1-xGa_xSb_zSe_2-wS_w, provided, wherein: 0≦x≦1, and ranges therebetween; 0≦y≦0.2, and ranges therebetween; 0.001≦z≦0.02, and ranges therebetween; and 0≦w≦2, and ranges therebetween. A photovoltaic device incorporating the Sb-doped CIGS film and a method for fabrication thereof are also provided.

Disclosed herein is a counter electrode for a dye-sensitized solar cell, and a method of producing the same. In the dye-sensitized solar cell which includes a photoelectrode containing a photosensitive dye molecules, in which the counter electrode is positioned opposite to the photoelectrode, and an electrolytic solution interposed between the photoelectrode and the counter electrode, the counter electrode has an electron transfer layer. The electron transfer layer has a structure in which one or more conductive materials, selected from the group consisting of a conductive polymer, platinum nanoparticles, a carbon compound, inorganic oxide particles, and a conductive polymer blend, are sequentially laminated. In the counter electrode, the electron transfer layer promotes smooth electron transfer through an interface between the electrolyte, containing pairs of redox ions, and counter electrode. Thereby, energy conversion efficiency is significantly improved in comparison with a conventional dye-sensitized solar cell employing a counter electrode in which only a platinum layer is applied on a transparent conductive material.

Solar photovoltaic (PV) devices, e.g., those based on the Copper Indium Selenide (CIS) family of absorbers, including CuIn_(1-x)Ga_(x)Se₂ (CIGS) absorber thin-film PV devices, are provided. Embodiments provide PV devices comprising an alkali metal-containing polymeric film (ACPF), which is a film formed from a composite comprising an alkali metal-containing material and a polymer. Embodiments of this disclosure also provide PV devices comprising a thermally stable polymer film that does not contain an alkali metal (TSP). Included within the embodiments of this disclosure are flexible PV devices comprising a flexible base substrate onto which one or more ACPFs and/or TSPs is/are provided, as well as flexible PV devices wherein an ACPF or TSP itself constitutes the base substrate in the form of a stand alone film. Processes for making such flexible PV devices include roll-to-roll processes. PV devices disclosed herein will provide improved energy conversion efficiencies as a result of the delivery of sodium dopant into the absorber layer. Also disclosed are combinations of such PV devices and batteries that may store energy generated from the PV absorber. This disclosure also relates to shunt circuits for connecting the PV absorber to a battery in a combination PV/battery device and to array connectors for connecting such PV devices, either with or without batteries.

The invention discloses a ambient vibration energy collecting device based on a two-DOF (Degree of Freedom) piezoelectric vibrator which comprises two parts, namely energy conversion and power regulation, wherein an vibration unit containing piezoelectric material in a vibration energy conversion device can respond ambient vibration transmitted by a base and convert mechanical energy into electric energy; a power regulation circuit accumulatively store electric energy after extraction and regulation. The vibration unit is provided with two piezoelectric vibrators with SDOF (Single Degree of Freedom) cantilever beam structure, which are fixed on the base in parallel horizontally, and a spring vertically connected with a vibrator mass block; the beam thickness of the two vibrators and the weight of the mass block are different, thus a broadband resonance two-DOF system of which adjacent first-order resonance frequency and second-order resonance frequency are adjacent is formed. The power regulation circuit is provided with a low-power-consumption synchronous charge transfer circuit module, a charge collection capacitor, a controllable voltage threshold DC / DC (direct current) conversion module and a power storage component. The device has a broader resonance response frequency band and low power consumption, can work without an external power supply so as to achieve high efficiency, and is suitable for self-powered devices or devices getting electrical energy supply from environment.

The invention relates to a method for directly preparing graphene/cadmium sulfide quantum dot nano composite material with one step by adopting the graphite oxide as material. The invention provides a simplified technique method, namely the independent preparation step of graphene is saved and skipped, the reduction of graphite oxide or graphene oxide and generation of composite material are finished simultaneously or in one step; and the cadmium sulfide quantum dot has grown on the graphene while the graphite oxide or graphene oxide is reduced to graphene. Therefore, the method can greatly reduce the manufacturing cost of the composite material. The graphene/cadmium sulfide composite material prepared by the method can be used as novel photoelectric conversion material and has higher energy conversion rate.

A thin film type solar cell with a plurality of unit cells connected in series is disclosed, wherein uniform energy conversion efficiency is maintained in all of the unit cells by improving the energy conversion efficiency in the unit cell with the relatively-low energy conversion efficiency, to thereby realize the improved energy conversion efficiency, the thin film type solar cell comprising the plurality of unit cells, each unit cell including a front electrode, a semiconductor layer, and a rear electrode sequentially deposited on a substrate, wherein the thin film type solar cell includes a first unit cell set including at least one first unit cell with a first cell width, and a second unit cell set including at least one second unit cell with a second cell width which is different from the first cell width, wherein the first unit cell set occupies 80 to 95% of an entire area of the unit cells, and the second unit cell set occupies 5 to 20% of the entire area of the unit cells.

The invention discloses a voltage converter and a control method therefor and a voltage conversion system, and energy conversion efficiency of the voltage converter can be improved. The voltage converter comprises an energy storage circuit, wherein the energy storage circuit comprises a first switching element, a second switching element and a first energy storage element; the voltage converter also comprises a third switching element and a second energy storage element, wherein in a first time frame, the first switching element is in a conduction state, the second switching element and the third switching element are in an off state, and a voltage source coupled to the voltage converter charges the first energy storage element and the second energy storage element; in a second time frame after the first time frame, the first switching element is in an off state, and the second switching element and the third switching element are in a conduction state; and the first energy storage element and the second energy storage element discharges to a load which is coupled to the voltage converter.

The invention relates to the field of micro energy, in particular to a composite type electric generator based on an electromagnetism and friction principle. The composite type electric generator comprises a shell, a top mass block, a top permanent magnet, a friction layer, a metal coil and a bottom permanent magnet, wherein the top mass block, the top permanent magnet, the friction layer, the metal coil and the bottom permanent magnet are arranged in the shell from top to bottom. The shell is of a cylinder shape, the top mass block, the top permanent magnet, the friction layer, the metal coil and the bottom permanent magnet are all cylindrical, and a film wraps the metal coil. The composite type electric generator has the advantages that the composite type electric generator replaces a traditional battery to supply power for a lower-power-consumption electronic component, mutual advantage compensation of an electromagnetic generator and a friction type generator is achieved, energy conversion efficiency of the generator is improved, reliability is high, the separating speed is high, the structure of the component is simplified, and large-scale production is facilitated.

The invention relates to a two-stroke opposed-piston diesel engine. The existing piston-type engine structure is that a piston is arranged inside an engine cylinder, the piston is connected with a crankshaft through a connecting rod to form a crankshaft linkage mechanism, and the energy conversion efficiency is only 25 to 35 percent. The invention aims at designing a two-stroke opposed-piston diesel engine. The two-stroke opposed-piston diesel engine structurally consists of piston mechanisms (3), a power output mechanism (34), a left crankshaft linkage mechanism (36), and a right crankshaft linkage mechanism (32), wherein the piston mechanisms (3) with the same structure and capable of synchronously moving in opposite directions are oppositely arranged at two sides inside an air cylinder barrel (6) of an air cylinder body (2), a burning chamber (31), a fuel oil nozzle mechanism (10) and a vent valve mechanism (22) are arranged on the middle position of the cylinder barrel (6). The two-stroke opposed-piston diesel engine has the advantages that by adopting a unique structure, two pistons are ingeniously and symmetrically arranged inside the cylinder barrel, so that multiple problems existing in the traditional piston-type engine can be high efficiently and reliably solved. The energy conversion efficiency can be improved.

The invention discloses a solution cooling absorption type ammonia water motive power circulation device, which consists of an evaporator 1, a turbine machine set 3, a regenerator 4, a low-pressure absorbing device 5, a low-pressure ammonia pump 6, a gas-liquid separator 7, a pre-heater 8, a high-pressure absorbing device 9, a high-pressure ammonia pump 10, a throttle valve 11 and a connecting pipeline, wherein the low-pressure absorbing device and the high-pressure absorbing device are respectively divided into a solution cooling absorbing section and a cooling water absorbing section, and the solution cooling absorbing section is arranged above the cooling water absorbing section. The solution cooling absorption type ammonia water motive power circulation device has the advantages that the absorbing device outlet solution is used for cooling the front section of the absorbing process, the cooling water quantity can be reduced, the heat discharge and the heat transfer loss on the environment can be reduced, the heat transfer area is favorably reduced, and the circulation heat efficiency is favorably improved. The solution cooling absorption type ammonia water motive power circulation device is provided with the three-flow pre-heater for preheating work solution before entering the evaporator, the dilute solution and rich ammonia gas entering the absorber can be cooled, the absorption driving force can be enhanced, and in addition, the smoke gas low-temperature corrosion resistance of the device is favorably improved.

The invention discloses an energy-saving elevator power distribution system. A signal sampling unit in a flywheel energy storage device of the power distribution system is used for acquiring state parameters of an electrolytic capacitor, a bidirectional energy converter, a flywheel, a flywheel motor, the power grid and an inverter in an elevator system, and the output end of the signal sampling unit is connected with the input end of an analog to digital (A/D) converter; the output end of the A/D converter is connected with the input end of a calculation control unit; the communication port of the calculation control unit is connected with a communication unit, and the control signal output end of the calculation control unit is connected with the input end of an isolation driving unit; the output end of the isolation driving unit is connected with the control end of the bidirectional energy converter; the positive end of the electrolytic capacitor is respectively connected with the positive end of the output port of a three-phase rectifier and the positive end of the direct current (DC) port of the bidirectional energy converter, and the negative end of the electrolytic capacitor is respectively connected with the negative end of the output port of the three-phase rectifier and the negative end of the DC port of the bidirectional energy converter; and a rotor of the flywheel motor is coaxially connected with the flywheel, and a three-phase stator winding of the flywheel motor is electrically connected with the alternative current (AC) end of the bidirectional energy converter.

The invention discloses an improver for basic soil and a preparation method thereof. The improver for the basic soil is prepared from the following components in parts by weight: 30 to 40 parts of sorghum straw activated carbon, 35 to 42 parts of fermented maize straw powder, 120 to 130 parts of organic ecological fertilizer, 15 to 18 parts of urea, 10 to 12 parts of diammonium hydrogen phosphate,8 to 10 parts of flue gas desulfurization gypsum, 8 to 10 parts of coal-fired flue gas desulfurization waste, 20 to 25 parts of vinegar residue, 15 to 20 parts of vinasse, 30 to 45 parts of furfuralresidue, 8 to 10 parts of water-retaining agent, 15 to 20 parts of aluminum sulfate, 10 to 12 parts of zinc sulfate, 12 to 14 parts of ferrous sulfate and 30 to 50 parts of sulfur. The improver has the beneficial effects that the improver for the basic soil can be used for fundamentally decreasing the pH (potential of Hydrogen) value of a soil solution, is used for ameliorating the basic trait ofthe soil; the preparation method of the improver is simple, easy and feasible, and is low in cost and short in time, and the improver is suitable for the large-scale improvement on the basic soil.

The invention discloses a non-relativistic electron beam induced dielectric waveguide-based terahertz radiation source. The non-relativistic electron beam induced dielectric waveguide-based terahertz radiation source includes a pulse laser light source used for emitting a laser pulse string, a frequency adjusting device used for adjusting the repetition frequency of the laser pulse string, an electron gun and a dielectric waveguide; the cathode of the electron gun is used for absorbing the laser pulse string and transmitting an electron beam cluster string; a size-adjustable electric field formed between the cathode and anode of the electron gun is used for accelerating the emitting of the electron beam cluster string into the dielectric waveguide; the dielectric waveguide is excited by the electron beam cluster string to form terahertz radiation; and the repetition frequency of the laser pulse string and the radiation frequency of the dielectric waveguide form resonance. With the non-relativistic electron beam induced dielectric waveguide-based terahertz radiation source adopted, energy conversion efficiency between the electrons and radiations of the terahertz radiation source can be effectively improved, radiation power can be improved, radiation frequency is adjustable. The cost of the terahertz radiation source can be reduced.

A DC to AC inverter has a DC power input port, a buck converter, a buck/boost converter, an output filter and an AC output port. The DC power input port has a positive input terminal and a negative input terminal, both connected to a DC source. The AC output port is connected to a single-phase utility system. When the single-phase utility system is in positive half cycle, the buck converter generates a positive half-cycle signal of sinusoidal current. When the single-phase utility system is in negative half cycle, the buck/boost converter generates a negative half-cycle signal of sinusoidal current. In either the positive or negative half cycles, only one power electronic switch is switched in high frequency to reduce switching loss. Further, the negative input terminal of the DC power input port of the invention can be connected to a neutral line of the single-phase utility system.

An extendable and angle-adjustable solar charger includes a charging base having a charging slot for charging a rechargeable battery and a charge control circuit; a solar panel having a solar chip and a substrate for positioning the solar chip; and two parallel extending elements made of a conductive material and having a first pivoting portion pivotally and electrically coupled to positive and negative terminals of the charge control circuit, and a second pivoting portion pivotally and electrically coupled to anode and cathode plates of the solar panel. The solar panel can be folded onto the charging base for storage, or spread open for use. The first and second pivoting portions can adjust the light absorption position and the angle of elevation towards light to enhance the solar energy conversion efficiency, protect the charging base from direct sunlight and rain, so as to improve the life expectancy and safety.

The present invention relates to a rolling piston capable of changing the sliding friction between piston and cylinder into rolling friction. It includes piston body, several rolling bodies positioned around the piston body and fixing device connected between piston body and rolling bodies. Besides, said invention also provides its working principle.

The invention discloses an anode modification technology for an organic micromolecule device having a heterogenous junction and belongs to the field of photoelectric conversion. The defect of low conversion efficiency in the prior art is overcome, an anode interface is modified through an anode insertion layer, anode exciton splitting is suppressed, and the carrier collection efficiency and energy conversion efficiency are improved. The main technical characteristics are that: an anode modification layer is arranged on a transparent electrode and is used for suppressing anode interface exciton splitting; and a heterogenous junction structure consisting of photosensitive layers of an electron donor and an electron acceptor is arranged on the modification layer. The anode interface exciton splitting is effectively suppressed on an anode-donor interface, and carriers can be effectively collected; therefore, the energy conversion efficiency of an organic solar cell is improved.

The invention relates to a solar thermal collector, which comprises an upper substrate, a lower substrate, a heat absorbing layer, a frame bracket and a plurality of supports, wherein the upper substrate and the lower substrate are arranged oppositely; the frame bracket is arranged between the upper substrate and the lower substrate; the upper substrate, the lower substrate and the frame bracket form a cavity together; and the heat absorbing layer is arranged on the upper surface of the lower substrate positioned in the cavity. The plurality of the supports are arranged in the cavity at intervals, and are contacted with the upper substrate and the heat absorbing layer respectively. The heat absorbing layer has a carbon nano tuber structure.

The invention relates to an ultrasonic pulse resonance jet rotary spray-head device which comprises an ultrasonic transducer and a spray head, wherein a longitudinal pulse jet inlet is drilled in an ultrasonic transducer body, the ultrasonic transducer body is rotatably installed on the central shaft of the transducer, a high-pressure rotary sealing device is arranged between the central shaft of the transducer and the ultrasonic transducer body, an axial high-pressure water channel communicated with the longitudinal pulse jet inlet is drilled in the central shaft of the transducer, and an ultrasonic transduction vibrator is arranged outside the central shaft of the transducer; and an oscillation cavity is arranged in the shell of the spray head, a plurality of nozzles are arranged at the lower end of the shell of the spray head, a multi-head amplitude-changing rod is arranged in the oscillation cavity, and a plurality of miniature amplitude-changing heads are fixedly connected onto the multi-head amplitude-changing rod. The design of the rotary ultrasonic transducer and the spray head is adopted by the invention, the oscillation cavity is arranged in the shell of the spray head, and the multi-head amplitude-changing rod is arranged in the oscillation cavity, thereby improving the energy conversion efficiency, increasing the cleaning width and area of the ultrasonic pulse resonance jet rotary spray-head device and greatly improving the cleaning efficiency of the ultrasonic pulse resonance jet rotary spray-head device.

The invention discloses disc type solar coupling SOEC (solid oxide electrolysis cell) electrolysis hydrogen production equipment and a hydrogen production method. The disc type solar coupling SOEC electrolysis hydrogen production equipment comprises a light intensity sensor, wherein the light intensity sensor is arranged on a collector, a condenser is arranged at the bottom of the collector, a disc type condensed light reflector is arranged at the lower part of the condenser, the disc type condensed light reflector is arranged on a sun-chasing power bearing box, and the sun-chasing power bearing box is arranged on a substrate; the light intensity sensor is connected with a controller inside the sun-chasing power bearing box; the collector is connected with a liquid metal heat exchanger through a union heat pipe, the liquid metal heat exchanger is connected with a heat exchanger, the bottom of the heat exchanger is connected with a water tank, the upper part of the heat exchanger is connected with an SOEC, and the SOEC is connected with an oxygen storage tank and a hydrogen storage tank. Solar energy is utilized, the current situation that the hydrogen production efficiency of solar energy is low at present is comprehensively considered, the technical thought of the SOEC is utilized, and optimization design is carried out for the problem of heat efficiency existing in high-temperature steam of high-temperature solid oxide electrode electrolysis at present, so that the equipment and the method disclosed by the invention are formed.

The invention discloses an ultrasonic motor dual pulse-width modulation (PWM) power drive topological structure, and belongs to the field of ultrasonic motor power drive power sources. The ultrasonic motor dual PWM power drive topological structure is characterized by comprising two PWM components, namely a constant current power supply PWM_POWER component and a power coupling PWM_DRIVE component. The current output end of the constant current power supply PWM_POWER component is connected with the current input end of the power coupling PWM_DRIVE component. The ultrasonic motor dual PWM power drive topological structure achieves quadrature adjustment of output voltage and output frequency without mutual influences of the output voltage and the output frequency, improves impedance matching between an actuator and a load, reduces influences produced by load characteristic impedance changes of ultrasonic motors, and improves energy conversion efficiency of the actuator. The ultrasonic motor dual PWM power drive topological structure plays a key role in achievement for accurate control of the ultrasonic motors.

The invention discloses a piezoelectric static composite-type low-frequency vibration energy collector which comprises a mass block, a PVDF film, a flexible variable capacitor and a silicon substrate. The flexible variable capacitor comprises a PDMS flexible cavity, a PDMS carbon nano tube upper electrode and a PDMS carbon nano tube lower electrode, the PDMS carbon nano tube upper electrode and the PDMS carbon nano tube lower electrode are located on the upper surface and the lower surface of the cavity respectively. The PVDF film is arranged on the PDMS carbon nano tube upper electrode of the flexible variable capacitor, and the PDMS carbon nano tube lower electrode of the flexible variable capacitor is fixed to the silicon substrate. The mass block is used for reducing work frequency of a device. According to the energy collector, an MEMS transducer can obtain large output power and high energy conversion efficiency in a low-frequency vibration environment; the energy collector is simple in structure, easy to manufacture, small in size and capable of operating in the low-frequency environment and has high energy conversion efficiency in an environment vibration range.

The invention provides a heating and temperature detecting method in tea processing, which applies electromagnetic heating and far infrared temperature detecting, wherein the electromagnetic heating comprises thermal insulation material, a heating coil, a magnetic conductive object and the like, and the far infrared temperature detecting comprises a far infrared temperature sensor and a temperature display device or a control device. The invention provides an electromagnetic roller steaming machine which consists of a steel cylinder, the heating coil, the thermal insulation material, a decorating plate, a guide pulley, the temperature sensor, transmission device, a stander, an electronic control cabinet and a guide vane strip; and the steel cylinder is heated in a way of electromagnetic heating, and the temperature of the steel cylinder is monitored in real time by the far infrared temperature sensor. The method has high energy conversion efficiency, little unavailable energy loss and no smoke and harmful gas emission, greatly reduces the air temperature of a workshop, and improves the work environment of the workshop; and furthermore, the method is sensitive and rapid in temperature response, can effectively reduce the fluctuation range of the temperature of the steel cylinder, is beneficial to accurately adjusting and controlling the electronic control cabinet, effectively improves the quality of enzyme-denatured leaves, and is even in deactivation of enzyme. Therefore, tea has obvious aroma and emerald green color.

Illuminator of using kinetic energy includes piezoelectric generating transducer and luminous element light emitting diode connected to each other. The piezoelectric generating transducer uses PZT piezoelectric ceramic as transduction material. The illuminator of using kinetic energy further includes transforming storage connected to piezoelectric generating transducer as well as flashing light sequence control part, which is connected to luminous element, for controlling time sequence of luminescence. The disclosed illuminator of using kinetic energy uses parasitical energy to glow, possessing features of lightweight, small size, low cost, relative high output electric quantity, and convenient transmission of electric energy.

The invention discloses a preparation method for a broad-band gap star-shaped non-fullerene micromolecule receptor and application of the receptor in an organic solar battery. The structural formula of micromolecules is of formula I as shown in the specification. The micromolecule receptor material with broad-band gaps, which is disclosed by the invention, has relatively good electron conduction properties and is in good absorption complementation and energy matching with a narrow-band gap polymer donor material PTB7-Th and the like. The micromolecule receptor is applied to the organic solar battery, open circuit voltage of 0.95V and energy conversion efficiency of about 8.23-10.14% can be acquired, and the application prospect of the broad-band gap star-shaped non-fullerene micromoleculereceptor in the organic photovoltaic field is sufficiently widened.

The invention relates to a redundant MPPT circuit structure-based micro-nano satellite power supply system, which comprises a control assembly, an electric storage assembly, switch assemblies and power generating assemblies, wherein every two power generating assemblies are connected with each other in series to form a power generating assembly group; a positive terminal of each power generating assembly group is connected with one switch assembly; a negative terminal of each power generating assembly group is connected with the negative terminal of the electric storage assembly; a control terminal of each switch assembly is connected with the control assembly; two ends of each switch assembly are also connected with two ends of the electric storage assembly and/or the other switch assemblies respectively; the positive terminal of each power generating assembly group is also connected with a first voltage input end of the control assembly; an output end of the electric storage assembly is connected with a second voltage input end of the control assembly; and the control assembly is used for controlling opening or closing of the switch assemblies. According to the system provided by the invention, connection and disconnection of a PMOS tube and an NMOS tube are achieved by a simple logic algorithm through an MPPT function, so that the system is simple and reliable to run.

The invention relates to a high-efficient rectification antenna based on microwave RFID frequency range low-power input. The high-efficient rectification antenna comprises a microstrip reception antenna and a microstrip rectification circuit working under the RFID frequency range, wherein the output interface point of the microstrip reception antenna is connected with the input interface point of the microstrip rectification circuit, and the microstrip rectification circuit comprises an input interface, an impedance matching circuit, a rectification circuit, an output filter and a load. The input end of the input interface is connected with the output end of the reception antenna, and the output end of the input interface is connected with the load sequentially through the impedance matching circuit, the rectification circuit and the output filter.

A brushless motor controller system includes a brushless motor (201) which further contains a rotor (24) and a stator (22), a plurality of independent motor controllers (203), a plurality of batteries (204), and a plurality of battery chargers (205). The stator (22) of the brushless motor (201) has a plurality of salient poles (32). A plurality of coils are wound on the salient poles (32) such that on each of the salient poles (32) there is wound different groups of windings electrically isolated from each other. The plurality of independent motor controllers (203) each corresponds and is electrically connected to one of the groups of windings on one of the salient poles (32) of the brushless motor (201). The plurality of batteries (204) each is connected to a corresponding one of the independent motor controllers (203) to provide electrical power thereto. The plurality of battery chargers (205) each is connected to el a corresponding one of the batteries (204). The plurality of independent motor controllers (203) each is adapted to power and control a corresponding one of the groups of coils on one of the salient poles (32) in the brushless motor (201) independently. The brushless motor controller system utilizes distributed motor controllers (203), batteries (204) and chargers (205) for brushless DC motor (201) which provides not only flexibility in motor output control but also redundancies of the controlling system making it more robust.

The invention discloses a single-excitation rotary ultrasonic motor. A rotor comprises a rotating disk and a frictional layer arranged on the surface of the rotating disk; a stator comprises an ultrasonic vibration transducer, an elliptical vibration mode converter and a friction drive block which is arranged at the front end of the elliptical vibration mode converter; the ultrasonic vibration transducer comprises a bolt and a rear cover plate, piezoelectric ceramic sheets, an electrode plate and a front cover plate which are sleeved on the bolt sequentially; the front end plate is in threaded connection with the bolt; the elliptical vibration mode converter is arranged at the front end of the front cover plate, and is cylindrical integrally; three staggered rectangular notches are formed on the upper side and the lower side of the elliptical vibration mode converter; and the elliptical vibration mode converter can convert longitudinal ultrasonic vibration generated by the ultrasonic vibration transducer to elliptical vibration of the tail end of the elliptical vibration mode converter and the friction drive block, and can drive the rotor to make continuous rotation motion.

The invention discloses a syringe-microinjection-type infusion device based on shape memory alloy driven and a method thereof. A baffle, a first fixing plate and a second fixing plate are arranged on a base plate. Positioning holes are formed on a support plate and the baffle. Semi-cycle fixing grooves are formed on the first fixing plate and the second fixing plate. A stopping block is arranged in the middle of a push rod. Two sides of the stopping block are provided with a shape memory alloy spring and a reset spring. The end, with the reset spring mounted on, of the push rod penetrates the positioning hole on the baffle and contacts with a disposable syringe. The disposable syringe is placed in the semi-cycle fixing grooves of the first fixing plate and the second fixing plate, and is fixed on the first fixing plate and the second fixing plate through a first clamp and a second clamp. The end, with the shape memory alloy spring mounted on, of the push rod penetrates the positioning hole on the support plate which is fixed on the base plate through a bolt. The syringe-microinjection-type infusion device has the advantages that structure is simple, no noise is produced, size is small and the like, and is adaptable to micro-drug injection and the like.