498 results about "Pulsed power" patented technology

The invention provides a low-altitude logistics distribution method and system based on an electromagnetic launching unmanned aerial vehicle technology, and the method comprises the steps: installing a modular electromagnetic launching system in a designated region of a first logistics park; the unmanned aerial vehicle is connected with the modular electromagnetic emission system, and cargo loading and parameter calibration are carried out; dynamically planning a flight route of the unmanned aerial vehicle from the first logistics park to the second logistics park; the electromagnetic emission system is started to accelerate the unmanned aerial vehicle, and the pulse power modulation technology is utilized to control the output of specific pulse power in different stages, so that the unmanned aerial vehicle reaches a specified take-off speed within a preset distance range; the unmanned aerial vehicle autonomously flies along the flight route and autonomously performs obstacle avoidance and path correction, and the flight route or task sequence of the unmanned aerial vehicle is dynamically adjusted; and deploying a modular catapult stopping system in the second logistics park to complete stopping of the unmanned aerial vehicle. According to the invention, the acceleration efficiency can be improved to ensure that the unmanned aerial vehicle keeps a safe distance from the obstacle while keeping the distribution efficiency.

The invention belongs to the technical field of machine manufacturing, and particularly relates to a metal part discharge machining precision control method and system.The method comprises the steps that discharge gap multi-dimensional physical parameters are sensed in real time in a multi-modal mode, high-dimensional feature extraction and data fusion are carried out, an intelligent discharge state prediction model is constructed, and on the basis of a prediction result, a metal part discharge machining precision control system is obtained. And processing parameters such as a pulse power supply, servo feeding and dielectric liquid are adjusted in an ultra-fast and self-adaptive mode, and iterative optimization of the processing process is achieved. By the adoption of the technical scheme, the machining precision, the surface quality and the consistency of the metal part can be remarkably improved, electrode loss is reduced, and the machining efficiency is improved.

The invention belongs to the pulse power semiconductor technology, and provides a drift step recovery diode with an anode short circuit structure, a cell of the drift step recovery diode comprises an anode structure, a voltage-withstanding layer structure and a cathode structure from top to bottom, and the anode structure is a mixed anode structure comprising a diode anode part, an NPN transistor part and an isolation and insulation part; the diode anode part, the NPN transistor part and the isolation and insulation part are jointly positioned on the voltage-withstanding layer structure; the anode part of the diode comprises a P-type low-doped layer, a P-type anode region and anode metal from bottom to top; the NPN transistor part comprises a P-type base region and an N-type anode region from bottom to top, and then the P-type base region and the N-type anode region form an NPN transistor together with an N-type drift region; the anode metal is located on the upper surfaces of the P-type anode region of the anode part of the diode, the NPN transistor part and the isolation and insulation part and makes contact with the P-type anode region and the N-type anode region at the same time to form a short circuit point, namely, anode short circuit, and better pulse output characteristics and lower process difficulty are achieved.

The invention belongs to the field of advanced metal plastic processing, and particularly relates to a difficult-to-deform metal ultra-thin strip rolling device and method.The device comprises an uncoiler, a high-strength rolling mill and a coiler which are sequentially arranged, and the inlet side and the outlet side of the high-strength rolling mill are each provided with a pair of equal-diameter rollers; the equal-diameter roller is composed of a copper conductive roller and a ceramic insulating roller, the copper conductive roller on the inlet side and the copper conductive roller on the outlet side are electrically connected to the positive electrode and the negative electrode of the pulse power source respectively, and a strip blank on the uncoiling machine sequentially penetrates through the equal-diameter roller on the inlet side, the high-strength rolling mill and the equal-diameter roller on the outlet side and then is wound on the coiling machine. And a working roll, which is in contact with the strip blank, on the high-strength rolling mill is an insulating ceramic working roll. The pulse current in the method can induce dynamic recrystallization, an ultra-fine grain or nanocrystalline structure is obtained, and the strength and plasticity matching of the product is superior to those of a traditional process. Meanwhile, long-time high-temperature oxidation can be avoided by adopting pulse current to heat the strip blank, and the surface is bright.

The invention discloses a power modulation method and system for an all-solid-state power supply, and belongs to the technical field of pulse power. The method comprises the following steps: converting a target waveform into a multi-level discrete waveform, and segmenting the multi-level discrete waveform into a plurality of continuous sub-waveforms according to polarity; for each sub-waveform, identifying all level switching moments, obtaining a time-level number corresponding relation, and generating a corresponding switching action time sequence matrix; the row index of the switching action time sequence matrix corresponds to the level number, the odd-numbered columns store the turn-on time parameters of the switching devices under the corresponding level number, and the even-numbered columns store the turn-off time parameters of the corresponding switching devices; and converting the switching action time sequence matrix into period counting based on an FPGA main clock, and generating a corresponding driving pulse signal by the FPGA according to time sequence data so as to control a switching device in the all-solid-state power supply and carry out power modulation. High-real-time and high-precision control on the switch of the solid-state power supply is realized, and the effect of arbitrary waveform power modulation is realized.

The invention relates to a multi-level pulse power supply and semiconductor process equipment. The multi-level pulse power supply comprises a high-frequency isolation conversion module and a switch module, wherein the high-frequency isolation conversion module is electrically connected with the switch module; the high-frequency isolation conversion module is used for accessing a direct-current bus voltage and performing voltage conversion processing on the direct-current bus voltage to generate a plurality of pre-processing voltages; and the switch module is used for responding to an externally input control signal and switching the state of the switch module so as to perform voltage amplitude modulation based on the plurality of pre-processing voltages and output a target voltage. The multi-level pulse power supply can output multi-level pulses.

Methods and devices for pressurization of a pulsed-power driver are presented. According to one aspect, independent pressurization of gas switches for each stage of the pulsed-power driver is provided. Independent pressurization is provided via an air delivery system comprising a plurality of separate stage-specific air delivery subsystems. Each air delivery subsystem is further segmented according to a plurality of sectors, each sector configured to pressurize a group of gas switches. Gas switches of a group of axially adjacent stages are pressurized according to a pressurization profile that increases or decreases the pressure in a downstream direction of the driver. Gas switches of another group of axially adjacent stages are pressurized according to a constant / fixed pressure. The increasing pressurization profile to self-triggered stages reduces misfiring of the stages. The increasing / decreasing pressurization profile to self-triggered stages and the constant pressurization to externally triggered stages control a pulse shape output by the driver.

The invention belongs to the technical field of semiconductor devices, and discloses a microchannel flow guide structure based on impact jet, a radiator and a semiconductor device.The microchannel flow guide structure based on impact jet comprises a first flow guide channel and a second flow guide channel, and a first fin and a second fin are arranged in the first flow guide channel; third fins are arranged in the second flow guide channel, located between the first fins and the second fins and used for enabling the cooling fluid to impact the third fins to form impact jet flow. The method is particularly suitable for the semiconductor device which emits large heat under the short-time pulse power working condition, high-strength impact jet flow can be formed, the local peak heat dissipation capacity is remarkably improved, and key technical support is provided for stable and reliable operation of the semiconductor device.

The invention provides an under-water discharge machining system and method for a radiation environment. The under-water discharge machining system comprises a pulse power supply control system, an electric spark machining head device and a servo control system. The pulse power supply control system comprises a power supply control box, a rectifier and a power amplifier which are electrically connected in sequence. And the power amplifier is electrically connected with the servo control system and the electric spark machining head device. The electric spark machining head device is provided with a feedback signal wiring connected to the servo control system. The pulse power supply control system is matched with the servo control system to drive the electric discharge machining head device to guarantee the process of the workpiece to be machined, so that the problem that conventional electric discharge machining equipment cannot be used in the high-radiation and boron-containing water environment is solved.

According to the megawatt-level half-cycle power generator based on the magnetic pulse compression system, by designing the constant-current magnetic switch reset circuit and the PID voltage stabilization charging technology, the pulse jitter characteristic within 10 ns can be achieved on the premise that megawatt-level power is output, the control precision is greatly improved, and stable output of high-power pulses is achieved. The problem that pulse generated by a traditional magnetic pulse compression amplifier is large in delay jitter is solved, high-precision output of megawatt-level pulses can be achieved, the high-precision magnetic pulse compression amplifier can be applied to a high-power transmitter needing to accurately control pulse output time, the high switching frequency and high switching efficiency of an MOS tube and the pulse compression characteristic of a magnetic switch are combined, and the high-precision magnetic pulse compression amplifier is achieved. The magnetic pulse power source has the advantages of high output power and high efficiency, improves the amplitude and phase stability of the output pulse compared with the traditional magnetic pulse power source, and expands the application scene and platform.

The utility model belongs to the technical field of pulse power supplies, and particularly discloses a pulse power supply circuit, which comprises a power supply input module, a PWM (Pulse Width Modulation) signal input module, a feedback control module, a control chip and an output module, the power input module provides working power for the control chip and the whole circuit. The PWM signal input module is used for transmitting an external PWM signal to a signal input pin of the control chip; the feedback control module collects an electric signal in the circuit and transmits a processed feedback signal to the control chip; the control chip drives the output module to output a pulse power supply to provide electric energy for a load based on an input PWM signal and a feedback signal. According to the utility model, the feedback signal acquired by the feedback control module is compared with the reference voltage, the difference value is amplified, the control chip adjusts the duty ratio of the PWM signal according to the amplified error signal, the pulse waveform is effectively optimized, and the output stability and reliability of the pulse power supply are improved.

The invention discloses a non-linear frequency conversion regenerative amplification device and a method thereof, and belongs to the technical field of laser non-linear frequency conversion. The device comprises a signal light injection unit, a regeneration amplification cavity unit and a pump light synchronization unit. The regenerative amplification cavity unit comprises an optical resonant cavity structure module, a polarization control module and a nonlinear action module. A time domain switch is formed through the polarization control module under the driving of the time schedule controller, and the preset number of times of circulation of signal light in the cavity is accurately controlled. And meanwhile, the pump light synchronization unit generates pump pulse string laser which is synchronous with the circulation process and has sub-pulse power increasing in sequence, so that the signal light and one corresponding pump sub-pulse are subjected to optical parametric amplification in the nonlinear crystal in each circulation. The space complexity of multi-stage amplification is converted into time domain controllability, high-efficiency and high-gain nonlinear frequency conversion is realized by using a single-stage compact structure, and the integration level and the stability of the system are remarkably improved.

The invention discloses an aluminum alloy hard oxidation process, and relates to the technical field of aluminum alloy part surface treatment, the aluminum alloy hard oxidation process comprises the following steps: S1, pretreatment: oil removal, alkali corrosion treatment and acid pickling neutralization; s2, hard oxidation is conducted, specifically, the pretreated workpiece is put into an oxidation tank with electrolyte and a stirring system to be subjected to stirring and oxidation treatment; and S3, post-treatment: cleaning with hot water, sealing with nickel acetate and drying in a drying oven. The process mainly comprises the following steps: carrying out pretreatment of oil removal by an organic solvent, alkali etching and acid pickling, combining sulfuric acid-citric acid-monopotassium phosphate composite electrolyte, pulsed power supply and gradient boosting oxidation, carrying out ultrasonic stirring and precise temperature control hard oxidation, and finally carrying out nickel acetate sealing aftertreatment. The four industrial problems of poor batch consistency of oxidation films of aluminum alloy workpieces, non-uniformity of complex workpieces, high energy consumption and poor compatibility to high alloy materials are thoroughly solved, and the oxidation film which is high in hardness, uniformity and corrosion resistance and saves energy is obtained.

An integrated triggering system for a pulsed-power driver is presented. The triggering system includes a pulse distribution circuit that couples externally generated trigger pulses to midplanes of a limited number of stages of the pulsed-power driver. The pulse distribution circuit includes common midplane nodes, each coupled to a group of midplanes of a same stage via respective isolating inductors. Isolating elements are coupled between the common midplane nodes of a same stage. The triggering system further includes a protection circuit configured to reduce coupling of high voltages triggered at the midplanes to external circuits while allowing the trigger pulses to couple to the midplanes. The protection circuit includes a high pass filter comprising a capacitor. The triggering system further includes a midplane biasing circuit configured to provide a reference ground to the midplanes of all stages. The midplane biasing circuit includes a resistive ladder with nodes coupled to the midplanes.

A high-frequency power supply device includes a first power supply that outputs a high-frequency AC voltage having a first frequency, a second power supply that outputs a DC pulse voltage including one or more continuous pulse waveforms, a matching box that receives the high-frequency AC voltage, performs impedance matching such that impedance viewed from the first power supply becomes constant, and outputs the high-frequency AC voltage, a filter that receives the DC pulse voltage, filters the DC pulse voltage, and outputs the DC pulse voltage to a pulse-power input terminal of a load, and an IMD suppression circuit that includes a first inductor having predetermined inductance provided between the matching box and an AC-power input terminal of the load, receives the high-frequency AC voltage, allows the input high-frequency AC voltage to pass through the first inductor, and outputs the high-frequency AC voltage to the AC-power input terminal of the load.

The invention discloses a sodium ion battery internal resistance test and simulation calibration method based on a mixed pulse method, and the method comprises the steps: carrying out a mixed pulse power characteristic test experiment on a sodium ion battery through multi-rate pulse charging and discharging, and obtaining voltage-current response data in a full charge state range; based on the voltage-current response data, extracting and constructing an experimental internal resistance data set; taking the experimental internal resistance data set as an optimization target, performing crossover, variation and selection operation iterative optimization through a genetic algorithm until a predefined fitness function is smaller than a preset threshold value, and outputting calibrated electrochemical model key parameters; and embedding an open-circuit voltage temperature correction model obtained based on temperature gradient experimental data fitting and the calibrated key parameters of the electrochemical model into the electrochemical model to form a calibrated battery simulation model. The battery simulation model obtained through parameter calibration can reflect the coupling rule of the internal resistance, the SOC, the multiplying power and the temperature in a high-precision mode, and the precision of the model is improved.

The invention relates to the technical field of holographic electric quantity sensing and local hot spot regulation and control, in particular to an intelligent control system and method for energy-saving turn-off of an air conditioner based on holographic electric quantity sensing. The position marking unit associates the equipment position with an air conditioner airflow path, records a hot spot area wind speed reference value and an attenuation coefficient and marks a hot spot influence range, and the control unit calculates the minimum wind speed of a hot spot for maintaining a standard temperature through a heat diffusion model, predicts a global heat load in combination with the total electric quantity, coordinates frequency reduction of a compressor and generates a wind speed instruction. The fan control unit adjusts the wind speed in a partitioned mode, self-adaptive compensation is started in combination with actually-measured temperature rise, bidirectional closed-loop control over the fan and the compressor is achieved, and the energy-saving and temperature-control requirements are balanced.

The present disclosure can be applied to the technical field of LIDAR. Provided are a method and apparatus for correcting a wind speed error of a multi-sea-state variable-integration wind LIDAR. The method for correcting a wind speed error of a multi-sea-state variable-integration wind LIDAR comprises: acquiring attitude data of a wind LIDAR and a signal-to-noise ratio of an echo signal; minimizing a relative error value between simulation information of a degree-of-freedom coordinate value and measurement information of the degree-of-freedom coordinate value to obtain correction information of the degree-of-freedom coordinate value; on the basis of the signal-to-noise ratio and a buoy amplitude, determining a target pulse accumulation count from a pulse accumulation count lookup table; on the basis of the target pulse accumulation count, accumulating an initial pulse power spectrum to obtain a target pulse power spectrum; on the basis of a center frequency corresponding to the maximum power density in the target pulse power spectrum and the correction information of the degree-of-freedom coordinate value, obtaining a corrected radial wind speed; and performing inversion on the basis of the corrected radial wind speed to obtain a target wind speed vector.

The invention discloses a lithium battery SOC (State of Charge) and SOH (State of Health) joint estimation method based on dual-high-order volume Kalman filtering. The method comprises the following steps: firstly, based on a second-order RC equivalent circuit model of a lithium battery; equivalent circuit parameters are identified through a pulse power characteristic experiment, and an OCV-SOC relation curve is fitted through an open-circuit voltage experiment; constructing a dual-high-order volume Kalman filter, wherein the dual-high-order volume Kalman filter comprises an SOC estimation filter and an SOH estimation filter which are parallel to each other; the SOC filter operates in real time according to a sampling period; and finally, taking the SOC estimation value as an observed quantity of an SOH filter, using the SOH estimation value to correct a battery capacity parameter in the SOC filter, and introducing a time scale transformation factor. The method can effectively improve the precision and the real-time performance of battery state estimation, the operation efficiency is remarkably improved compared with an existing method, and the method is suitable for application scenes such as electric automobiles and energy storage power stations with high requirements for the battery state monitoring precision and the real-time performance.

The application discloses a multi-target scheduling method of a photovoltaic energy storage hybrid device and relates to the technical field of new energy energy storage. The method comprises the following steps: monitoring the irradiance fluctuation characteristics of a photovoltaic power generation area in real time to lock the fluctuation risk; in response to a risk trigger signal, calculating the internal concentration polarization voltage of a battery in real time and quantifying the polarization approximation degree; based on the polarization approximation degree, using a gradual barrier model with nonlinear growth characteristics to calculate the length of the forced static period; and finally generating a pulse power instruction sequence composed of working pulses and forced static periods alternately. The application inserts a physical static time window when the micro electrochemical boundary approaches a critical point, uses the spontaneous diffusion of ions to eliminate accumulated concentration polarization, thereby meeting the rigid power support demand of the power grid while avoiding triggering the overvoltage protection of the battery, and realizing high-fidelity execution of the scheduling instruction.

The application provides a power battery pack SOP estimation method and estimation system, and a computer device. The power battery pack SOP estimation method comprises the following steps: obtaining the actual charging power, the initial charging pulse power, the initial charging duration power and the aging coefficient of the power battery pack; obtaining the first charging pulse power of the power battery pack based on the actual charging power, the initial charging pulse power and the initial charging duration power; obtaining the second charging pulse power of the power battery pack based on the initial charging pulse power and the first charging pulse power; obtaining the charging estimation duration power of the power battery pack based on the initial charging duration power and the aging coefficient; obtaining the charging estimation pulse power of the power battery pack based on the second charging pulse power and the aging coefficient; and the SOP estimation result of the power battery pack comprises the charging estimation pulse power and the charging estimation duration power of the power battery pack.

An electro-crushing drill bit is to drill a wellbore, wherein the electro-crushing drill bit comprises a bit body; a ground structure coupled to the bit body; and at least one electrode coupled to a power source and the bit body, the at least one electrode positioned within the ground structure, wherein the at least one electrode comprises, a fixed plate; and a movable plate that is movable relative to the fixed plate.

The application discloses a mandarin fish domestication pool, which comprises a pool body, wherein an oxygenation device, a water inlet and a water outlet are arranged in the pool body, a bait fish breeding frame is arranged below the water inlet, and a feeding device is arranged on the side of the bait fish breeding frame; the feeding device comprises a feeding pipe, a bait temporary storage tank arranged on the upper end of the feeding pipe, a feeding hopper arranged on the upper end of the bait temporary storage tank, cathode ring pieces and anode ring pieces arranged in the feeding pipe, and a pulse generator and a pulse power amplifier connected through wires. The domestication pool is improved, so that live fish feeding, live fish and dead fish or feed proportionate feeding are facilitated, and switching and adjustment are facilitated, thereby improving the convenience and success rate of domestication.

The invention discloses a battery dynamic characteristic test method based on optimization iteration, which comprises the following steps of: 1, executing a hybrid pulse power characteristic (HPPC) test, and collecting data such as current and voltage to establish a second-order RC model; 2, constructing a deep reinforcement learning (DRL) simulation environment by using parameter identification, defining a state, an action and a reward function, and training to obtain an optimal strategy network; 3, the deep reinforcement learning strategy network outputs the next action according to the current battery state, the action acts on the battery model to generate a new state, the new state is guided to generate a subsequent action, and loop iteration is carried out in this way to finally splice a complete test waveform; and comparing the dispersion of the performance indexes to verify the superiority in amplifying the difference and improving the identification precision. According to the method, the dynamic test waveform with higher identification capability can be generated, and the time and energy consumption cost required by battery evaluation and sorting are effectively reduced.

The invention provides a pulse power module for discharging a super capacitor, which is applied to the field of fusion. The module adopts a double-layer discrete structure and comprises a converter box and a high-voltage box which are arranged on a primary side and are mutually independent, and the high-voltage box is positioned above the converter box and is electrically connected with the converter box to form a main circuit. A water-cooling heat dissipation H-bridge converter unit and a direct-current support capacitor are integrated in the converter box; and an air-cooled radiating direct current circuit breaker and a smoothing reactor are integrated in the high-voltage box. The module is further provided with a double-loop redundant power supply system which adapts to the fusion pulse discharge working condition, electricity is taken from the input side of the high-voltage box and the direct-current bus side of the converter box respectively, and power is reliably supplied to the control unit through a high-voltage optimization strategy. The problems of complex heat dissipation management, unstable power supply, inconvenient maintenance and the like in fusion high-power pulse application are effectively solved, and the reliability and the safety of the system are improved.

The technology disclosed relates to a pulsed power drilling system 100 for breaking a mineral substrate 400 and to a method for breaking a mineral substrate 400 by passing a pulsed electrical current through the mineral substrate 400. The disclosed pulsed power drilling system 100 and method 500 using microwave radiation for affecting the electric field and electric charge distribution inside ionizable inclusions in the mineral substrate 400 to create localized ionizations inside the mineral substrate 400. The disclosed pulsed power drilling system 100 and method 500 may for example be applied in rock drilling, concrete processing, mineral processing, and continuous mining. The present disclosure further relates to a drill rig 600 comprising a pulsed power drilling system 100, a computer program product comprising instructions, and the use of a pulsed power drilling system 100.

The invention discloses a synchronous test method for SOC-OCV and pulse power of a lithium battery, and the method comprises the steps: S1, carrying out the standard charging and standard discharging of a to-be-tested battery for 5 circles at room temperature, taking the average value of the discharge capacities of the last three times as Cs, and ending the battery when the battery is fully charged; s2, enabling the battery to reach heat balance at the test temperature, standing, and recording the battery heat balance standing tail end voltage Vs; s3, respectively carrying out discharging and charging tests on the battery in a C / 3 or C / 6 constant-current-to-constant-voltage mode to obtain data of a standing tail end voltage I V0, a discharging tail end voltage V1, a standing tail end voltage II V2, a charging tail end voltage V3 and a standing tail end voltage III V4 of the battery under different SOC values; and S4, obtaining a data matrix table according to the voltage data obtained in the step S3, and drawing an SOC-OCV curve and a pulse power value. According to the method, the SOCOCV and the pulse power can be tested at the same time, the accuracy of the test result is high, the test efficiency is greatly improved, and the test period and test resources are saved.

The invention discloses a preparation method of a low-temperature plasma plating and permeating modified layer on the surface of a metal mold. The preparation method comprises the following steps: S1, precise pretreatment of a base body: sequentially carrying out mechanical grinding and polishing and ultrasonic cleaning on the base body, and then drying and putting the base body in a vacuum chamber; s2, plasma activation: after vacuumizing, introducing mixed gas of argon and hydrogen, generating glow discharge under the action of a pulse power supply, and performing sputtering activation on the surface of the substrate; s3, gradient transition layer plasma deposition is conducted, specifically, a pulse direct-current plasma source is adopted, a Ti target and a Cr target serve as sputtering sources, and a transition layer with components changing in a gradient mode is prepared; s4, plating and permeating a multi-element synergistic functional layer: preparing the functional layer by adopting a radio frequency-pulse direct-current composite plasma source, namely a Ti target, a Cr target, a Si-Al alloy target and a rare earth element target through synergistic sputtering; and S5, post-treatment optimization: performing vacuum cooling to room temperature after low-temperature annealing treatment to obtain a final modified layer. The permeation modified layer prepared by the method has high binding force, high hardness, high wear resistance and salt spray corrosion resistance.

This invention discloses a variable-wave arc welding power supply control method, arc welding equipment, control device, and storage medium. Applied to an arc welding equipment, the equipment includes a coordination control module and at least two power conversion modules. The coordination control module is connected to the controlled terminals of each power conversion module to control the switching of the power conversion modules to form and output pulse power. The output terminals of each power conversion module are connected in parallel to superimpose the electrical energy of the arc welding power supply. The variable-wave arc welding power supply control method includes: the coordination control module outputting its corresponding control commands to each power conversion module; and each power conversion module adjusting the pulse width and on / off timing of the pulse power according to the control commands to increase the power or voltage amplitude of the arc welding power supply. This design optimizes the output waveform of the welding power supply, enabling it to provide excellent dynamic characteristics and improve welding performance.

The invention relates to the technical field of electroplating, in particular to an ionic liquid aluminum plating method. The invention discloses an ionic liquid aluminum plating method. The frequency lt is adopted; and carrying out electroplating treatment by using a 50Hz pulsed power supply, wherein an electroplating solution is a chloroaluminate system ionic liquid. According to the ionic liquid aluminum plating method, the frequency lt is adopted; according to the invention, electroplating is carried out by using a pulse power supply with the frequency of 50 Hz, and aluminum ions can obtain sufficient growth time after nucleation and form a stable and compact crystal structure in cooperation with the chloroaluminate system ionic liquid, so that the problems of poor compactness, easy formation of loose dendritic crystals and weak leveling performance of an existing ionic liquid aluminum plating layer are effectively solved. And the prepared pure aluminum coating is flat and compact in surface, has no obvious defects, and is obviously superior to a coating prepared in the prior art.