89 results about "Pulse discharge" patented technology

The invention relates to the technical field of battery management, and discloses a battery health state evaluation method and system for an electric tool energy supply device, and the method comprises the steps: obtaining multi-source sensor data in the operation process of an electric tool, and carrying out the preprocessing of the data; identifying and classifying multi-stage pulse discharge events, extracting multi-scale voltage response features and performing temperature compensation; equivalent circuit model parameter identification is carried out, abnormal identification results are checked and removed, and parameter aging characteristics are extracted; constructing a time sequence prediction model for prediction; evaluating the overall health state and the monomer consistency of the battery pack; defining a judgment standard of effective cycles, predicting the number of remaining effective cycles, calculating a confidence interval of a prediction result, and generating a battery management suggestion; formatting into a standardized evaluation report, carrying out data synchronization and model optimization through edge cloud collaboration, and recording a system operation log; according to the invention, accurate health state evaluation and residual life prediction are realized.

The invention discloses a load control method and system for mobile energy storage equipment, a medium and a product, and the method comprises the steps: obtaining the motion state data and environment state data of target mobile energy storage equipment; performing second-order differential operation on the real-time speed to obtain a jerk value; generating a power demand impact sequence; based on the real-time polarization impedance and the real-time open-circuit voltage, calculating a maximum pulse discharge power threshold value under the condition that a preset under-voltage protection threshold value is not triggered; when the maximum power demand value in the power demand impact sequence is greater than the maximum pulse discharge power threshold, determining that the target mobile energy storage equipment has a power supply drop risk in a preset load prediction time window; calculating an energy gap prediction sequence based on waveform integration of the power demand impact sequence; and generating a feed-forward compensation instruction based on the energy gap prediction sequence, and controlling an auxiliary power conversion unit in the target mobile energy storage equipment to execute the feed-forward compensation instruction. And the accuracy of load control is improved.

The invention relates to the technical field of storage battery monitoring, and discloses a storage battery operation state visual monitoring method and system based on an electrochemical impedance and polarization internal resistance technology. The method comprises the following steps: sequentially applying sine wave alternating current excitation signals of a plurality of frequency points to a to-be-monitored storage battery, and synchronously drawing a first Nyquist graph; applying pulse discharge excitation in a floating charge state of the to-be-monitored storage battery, and acquiring a current signal and a terminal voltage signal in real time to obtain a polarization internal resistance estimated value; calculating a high-frequency intercept change rate according to the first Nyquist graph and a second Nyquist graph under a corresponding environment condition; and performing visual graphic display on the first Nyquist graph, the impedance parameter set, the voltage response waveform corresponding to the polarization internal resistance estimation value and the comprehensive aging index. According to the invention, a visual and clear battery operation state monitoring result can be provided for operation and maintenance personnel.

To realize an inexpensive and miniaturized test device for electrical and electronic equipment. [Solution] The present invention proposes an electrical and electronic equipment testing apparatus for housing an electrical and electronic equipment to be tested in an internal space and testing the electrical and electronic equipment, comprising: a voltage connector to which voltage is applied via a coaxial cable; a housing that includes the voltage connector at its end, constitutes an outer conductor, and forms an internal space; and an inner conductor provided inside the housing, extending from the coaxial conductor of the voltage connector, and constituting a conductor septum, wherein a resin-based insulating material that suppresses the discharge of high-voltage pulses is filled in a predetermined range from the end, determined based on the applied voltage and the distance from the inner conductor to the outer conductor.

The invention discloses a chirped pulse Fourier transform microwave spectrometer and a detection method, and belongs to the technical field of microwave spectrums.The chirped pulse Fourier transform microwave spectrometer comprises a pulse sample introduction and reactant in-situ generation system, a segmented chirped pulse generation and radiation system, a signal detection and high-speed acquisition system, a synchronous time sequence control system and a signal processing and automatic acquisition assembly. According to the chirped pulse Fourier transform microwave spectrometer and the detection method, 18-40 GHz continuous broadband coverage is realized through a segmented chirped pulse sequence, and a pulse discharge sampling system is integrated, so that high-reaction-activity intermediates and molecular clusters thereof can be generated and directly detected in situ; the technical blank of a broadband high-sensitivity microwave spectrometer with the frequency band of 18-40 GHz is filled, and a powerful tool is provided for research on structures and reaction kinetics of key transient species in atmospheric chemistry, combustion chemistry and celestial chemistry.

The invention provides a multi-pulse space trigger adjustable discharge method and device, and the method comprises the steps: a control module transmits a trigger signal to an ith discharge ignition module at an ignition time point of an ith exciter according to an ignition time sequence mode; and when the ith discharge ignition module receives the trigger signal, a rising edge pulse discharge signal is sent to the ith exciter, so that the ith exciter carries out ignition operation. By adjusting the ignition time sequence mode, the ignition time sequence of the multiple exciters can be flexibly controlled, different combustion chamber structures and working condition requirements are met, and the ignition efficiency is improved. Different distribution of the exciters in the space and combined use of multiple ignition modes can be overlapped to generate different ignition effects, the ignition reliability of the combustion chamber is further improved, and it is ensured that the engine can be successfully ignited under various complex conditions.

This invention discloses a device for degrading biochemical warfare agents using positive and negative pulse discharge. The device includes a positive and negative pulse drive power supply that self-excites to generate narrow pulse signals, converts mains power to DC power, and then chops the DC power to output high-voltage positive and negative pulses. A reactor includes a reaction vessel and an inner electrode core, with the inner electrode core fixed inside the reaction vessel. The reaction vessel has a wastewater inlet pipe and a clean water outlet pipe. The wastewater inlet pipe receives tap water containing the biochemical warfare agent, and the clean water outlet pipe connects to a clean water tank. The inner electrode core is filled with an inner stainless steel wire mesh, which is connected to the positive and negative pulse drive power supply via an insulated wire. The outside of the reaction vessel is wrapped with an outer stainless steel wire mesh, which is grounded via a wire. This invention achieves rapid wastewater purification and good degradation effect of biochemical warfare agents through high-voltage positive and negative pulse discharge using the positive and negative pulse drive power supply.

The application discloses a high-voltage thyristor short-circuit switch testing device and system, and the device comprises a direct-current power supply module, a charging current-limiting resistor, an IGBT discharge switch, a pulse discharge capacitor, an IGBT driving and protection circuit module, and further comprises an overcurrent detection and latching module; the overcurrent detection and latching module collects the Hall current of a measured loop, and sends a blocking IGBT control signal to the input end of the IGBT driving and protection circuit module according to the Hall current; and after the blocking signal is reset, the IGBT can be controlled by the IGBT driving signal.

The invention discloses a long pulse debugging method for a large-area thermionic cathode ion source, and belongs to the technical field of thermionic cathode ion sources, and the method comprises the steps: carrying out the air inlet vacuum debugging after the ion source is assembled; the insulation and voltage endurance capability is improved through cold high-voltage exercise; turning off high voltage, lighting a lamp filament, applying arc voltage, and cleaning the cavity through arc chamber plasma discharge; the extraction voltage is gradually applied to perform beam extraction exercise, and beam transmission is optimized through diversion coefficient scanning; and finally, the diversion coefficient is reduced, the pulse width is prolonged, and long-pulse discharge debugging is realized. According to the method, a systematic debugging process from vacuum verification, insulation and voltage resistance, cavity cleaning to beam extraction and long pulse discharge is established, the stability and reliability of the ion source can be effectively improved, the breakdown risk is reduced, and a technical basis is provided for long-term stable operation of a large-area hot cathode ion source in the future.

The invention relates to the technical field of power supply circuits, in particular to a modular circuit of a high-repetition-frequency pulse power supply and a control method of the modular circuit. According to the technical scheme, the device comprises a preceding-stage AC-DC charging unit, an energy storage capacitor, two pulse discharging modules connected in parallel and a discharging switch, and the preceding-stage AC-DC charging unit is used for converting alternating current input into direct current. According to the invention, by adopting a standardized and parallelizable modular circuit architecture, flexible and linear adjustment of the maximum output current of the system is realized, the product development and delivery cycle for different current requirements is remarkably shortened, and the customization and maintenance cost is reduced; meanwhile, the total power is dispersed to a plurality of independent modules through the design, the limit requirement for a single power device is lowered, and the reliability and maintainability of the whole system are improved; under the design of synchronous triggering and current sharing, all the modules can cooperatively output high-quality and high-consistency pulse current.

This invention provides a method for controlling the rate of change of current in an electrical discharge pulse power supply. The electrical discharge pulse power supply includes a high-voltage breakdown circuit for gap breakdown machining in electrical discharge processing, a constant current source circuit for controlling the peak current of the pulse discharge, and a current waveform control circuit for controlling the rate of change of current at the leading and trailing edges of the output current waveform. The pulse power supply of this invention adopts an energy-saving design, eliminating power consumption and heat dissipation problems caused by current-limiting resistors in traditional power supplies. It meets different needs in actual processing and has better market applicability. It can effectively control the output current waveform to rise and fall at a certain slope, increasing the variety of output current waveforms, resulting in high processing efficiency and low electrode loss, thus meeting different processing requirements in actual production.

The application discloses a kind of full-component aggregate continuous industrialization recycling system and method of waste concrete, and the system includes reaction vessel, flat plate discharge electrode, screen group, powder collection container and side aggregate collection container.The screen group includes multiple screen meshes arranged in parallel from top to bottom;Screen mesh can be switched to connect high-voltage pulse source or ground, thereby forming high-voltage electrode or grounding electrode.When recycling waste concrete, the electrode properties of adjacent screen mesh layers in the screen group are replaced in sequence, so that a pulse discharge circuit is formed between adjacent screen mesh layers, particles on the lower screen mesh in adjacent screen mesh layers are crushed, and different particle size aggregates separated are input into the aggregate collection container.Fine powder crushed is entered into the powder collection container through the fourth screen mesh, avoiding secondary crushing of regenerated aggregates that have been dissociated, ensuring the original size and apparent form of the aggregate, achieving continuous industrialization recycling of waste concrete, and reducing energy consumption.

The utility model discloses an active driving type intelligent voice pulse voltage anti-theft door which can be applied to a door provided with a common door lock and a high-grade door lock. According to the active driving type intelligent voice pulse voltage anti-theft door, the outside of the door is monitored at any time through the pyroelectric infrared sensor installed on the outer side of the door, and dynamic monitoring is conducted within the monitoring range. And when an abnormal phenomenon occurs, the camera system is started to carry out automatic camera shooting. Meanwhile, the first function is started for voice driving, and after 10 seconds of starting, if the thief does not give up, the second function is automatically started for pulse type discharging, so that the thief is prompted to stop the criminal behavior of theft due to instant electric shock, and the purpose of actively driving the thief is achieved.

The invention relates to a discharge control circuit, a corresponding system, a vehicle and a method. A discharge control circuit includes a driving circuit arrangement that applies a pulsed discharge signal to a control terminal of an electronic switch and generates a pulse in the pulsed discharge signal, the duration of the pulse being in accordance with a voltage applied to the control terminal of the electronic switch sensed at a sensing node. The circuit also includes a feedback network including a reference generator that generates a signal indicative of a reference duration of a pulse in the pulsed discharge signal, and a pulse duration generator coupled to the sensing node to generate a duration signal indicative of an actual duration of the pulse in the discharge signal. A pulse duration comparator coupled to the reference generator and the pulse duration generator acts on the pulse duration control circuitry to control the duration of a pulse in the pulse discharge signal applied to the control terminal of the electronic switch.

The invention discloses a solid-state switch output pulse voltage top drop compensation method and circuit, and the method comprises the steps: monitoring the discharge time of a main pulse in real time when a main pulse generation unit outputs pulse voltage, and immediately injecting a compensation current into an energy storage module of the main pulse generation unit when the main pulse begins to discharge, the compensation current is used for counteracting voltage drop caused by discharge of the energy storage module, so that the top of the discharge voltage of the main pulse generation unit is kept flat during discharge. According to the invention, solid-state switch output pulse top drop compensation is simply and efficiently realized.

This invention belongs to the field of power semiconductor technology and relates to a parallel current sharing circuit for a variable conduction region MCT. This invention employs a gate layout partitioning and threshold hierarchical control method, dividing the MCT gate layout into multiple conduction regions. By combining a gate drive circuit, a pulse discharge circuit, a feedback circuit, and a gate control circuit, the MCT gate conduction regions are controlled in real time, achieving precise control of the current peak during pulse discharge. The gate drive circuit is powered by an external low-voltage power supply and provides the gate drive signal to the gate control circuit through a driver chip. The pulse discharge circuit is powered by an external high-voltage source, discharging a resistor to generate a high-frequency pulse current signal. The feedback circuit samples the current peak of the high-frequency pulse current signal and provides a feedback signal to the gate control circuit. The feedback signal from the feedback circuit is used to precisely control the MCT conduction regions. The parallel current sharing structure of the variable conduction region MCT has the advantages of high integration, small size, and high stability.

According to the signal trailing control circuit and the signal trailing control method of the Marx type high-voltage pulse source, two or more discharging circuits which are connected in parallel and have different resistance values are arranged in each stage of Marx booster circuit, and then different discharging current-limiting resistor combinations are selected and switched, so that the Marx type high-voltage pulse source is formed. Namely, a large resistor combination is selected by a large voltage, a small resistor combination is selected by a small voltage, and accurate and rapid discharge aiming at different residual voltages is realized, so that trailing is inhibited. According to the signal trailing control circuit and the signal trailing control method, trailing can be flexibly and accurately controlled, the pulse width can be adjusted, and voltage monitoring and discharge time calculation can be simply realized without monitoring pulse discharge voltage by utilizing a capacitor discharge formula and Taylor expansion thereof.

This invention provides a signal-enhanced pulsed discharge helium ionization detector and detection method, comprising a sample introduction module and, from top to bottom, a grounding module, a discharge region module, and a dual-biased electrode ion focusing module. The grounding module includes a grounding cathode needle. Helium, serving as both the carrier gas and discharge gas, enters the discharge region module from the grounding module. The grounding cathode needle is used to ionize the helium gas within the discharge region module to generate discharge material. The dual-biased electrode ion focusing module includes a collecting electrode and a first bias electrode and a second bias electrode coaxially disposed upstream and downstream of the collecting electrode. The second bias electrode provides a reverse electric field to transport electrons flowing with the helium gas to the collecting electrode. The sample introduction module, located below the dual-biased electrode ion focusing module, is used to inject the standard gas sample to be detected countercurrently from the bottom into the dual-biased electrode ion focusing module to mix and ionize with the discharge material. This invention can significantly enhance the output signal, improve sensitivity, and increase the signal-to-noise ratio.

The invention relates to thermal effect simulation in electrical discharge machining, in particular to a simulation method for a temperature field and a thermal stress field in electrical discharge machining. The method comprises the steps of collecting data through discharge machining experiment parameters, analyzing a single pulse discharge waveform, carrying out material microstructure characterization through a scanning electron microscope and an electron back scattering diffraction technology, establishing a physical model comprising an electrode, a workpiece and a plasma channel, carrying out model simplification, and setting a heat conduction model and a heat source model. Electric and magnetic field boundary conditions and heat conduction and fluid heat transfer conditions of a discharge channel are set, thermodynamic coupling analysis is carried out in ABAQUS software, the distribution condition of a transient heat effect and a stress field in discharge machining is simulated, numerical solution is carried out in combination with experimental data, and therefore the change condition of the temperature of the surface of a workpiece and the change condition of the thermal stress field in the machining process are obtained. Through the method, the distribution of thermal stress can be accurately predicted, and a theoretical basis is provided for optimizing a processing technology and reducing generation of microcracks.

The invention relates to a method for operating a pulsed discharge plasma source, as well as a discharge plasma source and an optical metrology system. In the method, the discharge plasma source emits a plurality of light pulses, wherein a pulse rate set during this emission of light pulses is varied over time during the operation of the discharge plasma source.

The application discloses an electromagnetic flanging device and method capable of maintaining axial dynamic balance of a coil and belongs to the technical field of plastic processing of metal materials. The device comprises an upper die, a lower die, a forming sheet, a balance sheet, a driving coil and a pulse discharge circuit. The driving coil is symmetrically arranged between the two sheets, and the two sheets are consistent in material, shape and thickness. The central aperture of the upper die is slightly larger to allow flanging, and the central aperture of the lower die is slightly smaller to limit deformation. The method comprises the following steps: sequentially placing the balance sheet, the forming sheet and the die, and fastening and closing the switch to discharge. The pulse magnetic field makes the two sheets induce eddy currents and Lorentz forces which are equal in size and opposite in direction, so that axial dynamic balance of the coil is realized. The application solves the problem of instantaneous one-way stress of the coil, avoids high-speed impact, greatly improves the stability of shaft pressure shell and the service life of the device, and is beneficial to batch production.

The invention discloses an electromagnetic pulse treatment device and method for partitioned customized strengthening of a metal welded joint, and belongs to the technical field of post-welding modification treatment of metal welded joints. Comprising an upper die, a lower die, a tailor-welded plate, an insulating baffle, a magnetic collector, a fixing device, a discharge coil and a pulse discharge loop. Heat affected zones on the two sides of the tailor-welded plate are firstly acted by induced eddy current to achieve transient pulse current treatment near a welding seam, the welding seam is acted by a high-energy pulsed high-intensity magnetic field collected by a magnetic collector, and in addition, the welding seam is subjected to the contraction effect of the induced eddy current and the diffusion effect of the pulsed high-intensity magnetic field. The welding seam and the heat affected zone are further affected by the current and the magnetic field in the attenuation process of the electromagnetic energy field. According to the method, severe joule heat, shock waves and an electromagnetic energy effect are induced at a heterogeneous joint interface through high-energy electromagnetic pulses, so that nanometer strengthening phase precipitation is instantly achieved, defects are eliminated, and the method has the advantages of being high in flexibility, high in efficiency, high in performance, high in reliability and the like.

The application relates to the technical field of implantable medical devices, in particular to an active implantable pulse generator system generating bidirectional pulses and a control method. The system comprises a microcontroller, a bidirectional pulse generation circuit, a charge pump unit, a DA unit, an electrode lead and a sensing filter amplification unit. The bidirectional pulse generation circuit comprises two charging capacitor units and a plurality of discharge circuits. Under the control of the microcontroller, the two charging capacitor units are first charged by the charge pump unit, then the bidirectional pulse generation circuit can discharge a preset group number of bidirectional pulses to human tissues according to a preset voltage value and a preset pulse discharge time, so as to achieve the treatment purpose, and finally the charge in the human tissues is balanced by short-circuiting the discharge electrode, the charge accumulation effect caused by the unidirectional stimulation pulse is eliminated, and the problem that the charge accumulation effect causes damage to the human tissues is avoided.

The application provides a kind of magnet coil monitoring method and system, wherein the monitoring method comprises: in the process of discharging circuit of magnet coil every time pulse discharge, the first voltage signal and the first current signal of pulse discharge are acquired;First voltage signal and first current signal are phase aligned, and second voltage signal and second current signal after phase alignment are obtained;The impedance of magnet coil is calculated when each pulse discharge using second voltage signal and second current signal;The loss factor variation characteristic of magnet coil is determined based on the impedance of at least two pulse discharges;Magnet coil is monitored based on loss factor variation characteristic.In the transient pulse discharge mode of the magnet coil of nuclear fusion device, by phase alignment of current and voltage, and using the current and voltage after phase alignment to calculate the loss factor variation characteristic in at least two pulse discharge processes, the aging / failure development trend of magnet coil is accurately, quickly and intuitively monitored, to give early warning in advance.

The invention discloses a high-speed Miller platform detection circuit for a GaN half-bridge gate driving chip, and relates to the technical field of power device driving. The circuit comprises a detection node, an RC series circuit, a positive pulse discharge path, a negative pulse voltage stabilization path and a signal isolation circuit. The RC series circuit couples the voltage jump delay of the floating ground to the detection node so as to generate a voltage pulse representing the starting point of the Miller platform; the positive pulse discharge module and the negative pulse clamping module are respectively connected in parallel between the detection node and the floating ground, and are used for rapidly discharging positive interference pulses and clamping negative pulses at safe voltage; and the signal isolation module is used for isolating a post-stage circuit load. The circuit is simple in structure, high in response speed and easy to integrate, the problems that a traditional detection scheme is large in delay and complex in circuit are solved, and key support is provided for a high-frequency GaN driving chip to achieve accurate active driving.

High voltage pulse discharge cracking device in drilling water The invention provides a high voltage electric pulse water pressure cracking device for rock mass, wherein a fracturing zone is formed between the front packer and the back packer, and the two are connected through an intermediate connector, and a discharge device on the intermediate connector comprises a copper ring A and a copper ring B, wherein the copper ring A is connected with a negative electrode wire, and the copper ring B is connected with a positive electrode wherein the copper ring A and the copper ring B are insulated and a distance is reserved as the discharge area.

The invention discloses an underwater pulse discharge plasma channel time-varying resistance prediction method based on a PINN, and belongs to the technical field of calculation. The method comprises the following steps: firstly, collecting discharge experiment data under various initial conditions, and performing preprocessing according to model training requirements; and secondly, a PINN neural network is constructed according to the requirement of an underwater pulse discharge actual task, a discharge equivalent loop and the Kirchhoff's law are combined to improve a PINN loss function, and the PINN loss function is made to be suitable for prediction of the plasma channel time-varying resistance. Thirdly, minimizing a loss function, optimizing model parameters, and training a PINN neural network to find optimal parameters; and finally, a corresponding time-varying resistance value can be obtained by inputting underwater pulse discharge time data. According to the method, the physical law and the neural network are combined for predicting the time-varying resistance of the underwater pulse discharge plasma channel for the first time, and the mapping relation of the time-varying resistance can be effectively constructed by combining physical information and the neural network.

The invention discloses an underwater pulse discharge experimental device and method, and belongs to the technical field of high-voltage discharge, the experimental device comprises a device cavity, and an electrode system and a reflecting cover are arranged in the device cavity; the electrode system is of a coaxial structure and is sequentially provided with a metal central core wire, an insulating layer and an annular metal shell from inside to outside, and the reflecting cover is nested on the outer side of the annular metal shell and is fixedly connected with the insulating layer; the electrode system comprises a high-voltage side rod electrode and a grounding side rod electrode, the center points of the high-voltage side rod electrode and the grounding side rod electrode coincide with the first focus of the reflecting cover, the grounding side rod electrode is fixed to the annular metal shell, and the high-voltage side rod electrode receives high-voltage pulses generated by the pulse high-voltage power source through a metal central core wire to achieve pulse discharging in water. And the generated shock waves are converged at a second focus after being reflected by the reflecting cover. According to the invention, the peak pressure and the utilization efficiency of shock waves are improved, different reflecting covers can be replaced, the experimental flexibility is realized, and a comprehensive experimental research platform for discharging in water, which is complete in function and convenient to operate, is provided.

This invention relates to the field of plasma generation technology, providing a hollow cathode discharge cavity and a high-repetition-rate pulsed discharge system. The hollow cathode discharge cavity includes an anode structure and a cathode structure; the anode structure is a hollow cylindrical structure; the cathode structure is a hollow cylindrical structure; the cathode structure is located inside the anode structure, and a gap exists between the outer wall of the cathode structure and the inner wall of the anode structure; the outer wall of the cathode structure has several through holes connecting to the hollow portion in the middle of the cathode structure. This solution can improve the plasma density and metastable atom conversion efficiency generated by the discharge.