312 results about "Electric current pulse" patented technology

The invention relates to the technical field of power batteries, in particular to a power battery pack health state detection method and system. The power battery pack health state detection method comprises the following steps: acquiring open-circuit voltage change data and terminal voltage fluctuation data of a battery under micro current pulse excitation, recording a change curve of voltage along with time through high-precision time sequence acquisition equipment, and obtaining an initial data set of voltage dynamic response; acquiring magnetic field intensity distribution and magnetic field gradient change data of the surface of the battery in a weak alternating magnetic field, and acquiring spatial magnetic field information through a magnetic sensor array to obtain a three-dimensional distribution diagram reflecting magnetic field nonuniformity; through a three-dimensional distribution diagram of magnetic field intensity distribution and magnetic field gradient change, a defect detection algorithm is adopted to analyze a mapping relation between magnetic field non-uniformity and internal micro cracks, and correlation distribution of defect positions and internal resistance growth rates is determined.

The invention discloses an LED chip service life rapid estimation method and device and a medium, and relates to the technical field of electrical digital data processing, and the method comprises the steps: designing a current pulse stress sequence for a calibration sample based on photoelectric thermal characteristic data, synchronously collecting photoelectric thermal response data before and after a pulse, and carrying out verification completion and mapping storage; generating a photoelectric thermal pulse response data set; according to the photoelectric thermal pulse response data set, photoelectric thermal change characteristics of the LED chip sensitive to the service life are extracted, and a photoelectric thermal pulse service life fingerprint of the LED chip is constructed; constructing a service life rapid estimation model, and predicting the service life of the LED chip according to the photoelectric thermal pulse service life fingerprint and the working condition information to generate the predicted service life of the LED chip; according to the method, the photoelectric thermal pulse life fingerprint of the LED chip is constructed, the photoelectric thermal evolution process under the pulse stress is compressed into a unified life characterization carrier, and a degradation feature basis capable of being directly called is provided for life modeling.

The invention relates to the technical field of battery pack charging control, and particularly discloses a sectional pulse charging control method and system, and the method comprises the steps: dividing a charging process into a plurality of charging intervals; a buffer zone is arranged between every two adjacent intervals; constructing a pulse control objective function; optimizing the initial parameters in combination with a particle swarm algorithm; performing transition control on the pulse amplitude and the duty ratio in the buffer zone, and fusing the optimization signal and the buffer signal to generate a final charging control instruction; compared with the prior art that a fixed current pulse or a simple segmented threshold hopping strategy is mostly adopted, voltage sudden change and severe temperature rise are likely to occur, and particularly under a nonlinear charging working condition, flexible transition of control parameters and service life-friendly charging adjustment are difficult to achieve, the method has the advantages that due to a buffer transition mechanism, the service life of the battery is prolonged, and the service life of the battery is prolonged. And pulse parameters are dynamically adjusted in combination with multi-objective optimization, so that the stability of charging control is improved and the cycle life of the battery pack is prolonged.

A drug injection device includes a drug injector configured to suck a drug from a drug storage by electrochemically operating an electroosmotic pump and discharge an sucked drug to an injection target; and a controller configured to output, to the drug injector, a control signal corresponding to an amount-based injection sequence for causing the electroosmotic pump to operate in an immediate bolus injection mode, wherein the amount-based injection sequence includes at least one pulse block defining a voltage pulse or a current pulse to be applied to the electroosmotic pump, the at least one pulse block defines a pair of pulse signals including a forward pulse and a reverse pulse that are applied to the electroosmotic pump to alternately generate negative pressure and positive pressure, and the electroosmotic pump alternately generates negative pressure and positive pressure for each pulse block to suck and discharge the drug.

The invention discloses a flood season river pollution early warning system and method, and relates to the technical field of environmental monitoring, the system comprises a microbial electrochemical sensor module, a current monitoring and data analysis module, a multistage early warning trigger module, a chemical detection auxiliary module, and a data transmission and storage module, through the microbial electrochemical sensor network, water samples on the surface layer, the middle layer and the bottom layer of a river can be collected at the same time, the toxicity index of composite pollutants is analyzed in real time by means of metabolic activity changes of electroactive flora, the comprehensiveness of monitoring of the river pollution condition is greatly improved, meanwhile, the current pulse frequency is monitored in real time, and the toxicity index is rapidly analyzed; and by matching with a preset accurate threshold value of the early warning trigger module, an early warning mechanism can be quickly triggered once the pollution condition reaches an early warning standard, so that the early warning timeliness is greatly improved, the time interval from pollution occurrence to early warning sending is shortened, and precious time is won for taking pollution prevention and control measures in time.

A high power (HP) generator (10) and method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, A high power (HP) generator (10) and method, wherein a damping circuit (50) is positioned in an open chain configuration between some, particularly all, of the LP generators (14, 16, 18), and in particular the damping circuit (50) includes a resistor (R) and / or an inductor (L).

The invention relates to the technical field of energy storage battery module health monitoring, in particular to an energy storage battery module health monitoring method, which comprises the following steps: S1, applying a preset micro-current pulse sequence to each single battery in an echelon utilization energy storage battery module; s2, collecting voltage response data of each single battery under the excitation of the micro-current pulse sequence, and recording current temperature data of each single battery; s3, extracting a first characteristic parameter set and a second characteristic parameter set from the voltage response data; s4, a pre-established reference model is used, the model combines the characteristic parameters, the battery aging state and the temperature corresponding relation, and the real-time influence of historical damage and the current temperature is separated and quantified; and S5, based on the historical damage contribution and the current temperature instant influence contribution, evaluating the inconsistency of each single battery in the echelon utilization battery module. The method has the advantage of improving the accuracy of health state and inconsistency evaluation.

The invention discloses a preparation method of a defective graphene negative electrode for a lithium battery, which comprises the following steps: grinding natural graphite into powder, carrying out graphite modification by irradiation of a high-current pulse electron beam, mixing with a conductive agent and a binder to prepare slurry, and coating the slurry on a metal foil to prepare the defective graphene negative electrode for the lithium battery. Natural graphite is modified through high-current pulse electron beam irradiation, obvious expansion deformation occurs on the surface of the natural graphite, defects are generated on a graphite structure, mutual stripping between graphite layers is achieved, the whole surface of the graphite is in a hairy wrinkle form, the structure is almost transparent, and the storage capacity and the cycling stability are obviously improved; the obtained defective graphene negative electrode material provides more channels for lithium ion diffusion, the ion diffusion path is effectively shortened by internal gaps, and a physical method is adopted, a specific reducing agent, an oxidizing agent or other intermediate media do not need to be used, and introduction of impurities is avoided.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, - A balancing circuit containing components that allow current to flow in only one direction, in particular a diode (D) or a component acting like a diode, is connected between the two LP generators (14, 16, 18).

A high power (HP) generator (10) and method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, particularly a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, the HP generator (10) is at least partially liquid-cooled, in particular directly by an immersed dielectric cooling liquid, and in particular the LP generators (14, 16, 18) are immersed in the dielectric cooling liquid.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, The control unit (22) is further configured to select the contribution of the LP generators (14, 16, 18) in a galvanically isolated manner, in particular via a fiber optic connection or a magnetic coupling.

A pulsed field ablation (PFA) system includes a composite electrode, a body-surface electrode, a PFA generator, and a processor. The composite electrode is coupled to a distal end of a catheter configured for insertion into an organ of a patient. The body-surface electrode is configured to be attached to a skin of the patient. The PFA generator is configured to be electrically connected to the composite electrode of the catheter and to the body-surface electrode, and to generate Direct-Current (DC) PFA pulses. The processor is configured to control the PFA generator to apply the DC PFA pulses between the composite electrode and the body-surface electrode while the composite electrode is placed in contact with target tissue of the organ and the body-surface electrode is in contact with the skin of the patient.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each LP generator (14, 16, 18) includes an energy storage component (C1, L1), and in use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; each LP generator (14, 16, 18) when in use provides at its output an LP generator value corresponding to the value of an energy storage component (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18); Several low power (LP) generators (14, 16, 18); - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, At least one, preferably several and most preferably all LP generators (14, 16, 18) comprise an LP generator value limiting circuit (151), e.g. a voltage limiting circuit or a current limiting circuit.

A method and apparatus for generating light includes a chamber having a high voltage region, a low voltage region, and a plasma generation region that defines a plasma confinement region. A magnetic core is positioned around the chamber and is configured to generate a plasma in the plasma confinement region. A switched power supply includes a DC power supply and a switched resonant charging circuit that together generate a plurality of voltage pulses at the output causing a plurality of current pulses to be applied to the power delivery section around the magnetic core so that at least one plasma loop is established around the magnetic core that confines plasma in the plasma confinement region, thereby forming a magnetically confined Z-pinch plasma. Light generated by the Z-pinch plasma propagates out of a port in the light source.

The invention discloses a method for manufacturing an aluminum alloy and a composite material thereof through additional ultrasonic vibration assisted pulse current electric arc wire feeding, and belongs to the technical field of electric arc additive preparation of aluminum alloys and aluminum alloy composite materials. The technical problems that an existing aluminum alloy electric arc additive structure is thick and large, air holes are many, and the deposition quality is poor are solved. The method comprises the following steps: pre-treating a substrate and a welding wire; an ultrasonic vibration head is arranged on a base plate, ultrasonic equipment vibrates in the z-axis direction under protective gas, and meanwhile welding wires are stacked layer by layer in a certain direction on the x-y plane through electric arc wire feeding; and then solid solution treatment, water quenching and aging treatment are sequentially carried out, and the process is completed. In the printing process, the current pulse and the ultrasonic vibration are applied at the same time, the stirring effect on the molten pool is formed, dendritic crystal breaking is promoted, the solidified grain structure is obviously refined, meanwhile, the defects such as air holes are reduced, and the mechanical property of the product is improved. The machining method is used for machining the large-size thin-wall cylinder part.

The present invention relates to the field of inverter fault detection, and specifically relates to an arc fault detection device for a photovoltaic energy storage inverter. It includes an inverter body and a housing sleeved outside it. A power switch is provided at the lower end of the inverter body, a transformer fixedly connected to the housing is beside it, and a detection device electrically connected to the power switch is also provided. An electromagnetic drive type circuit breaker mechanism is provided beside the detection device, which includes an electromagnetic coil, an iron core, a moving contact and a static contact. When the detection device detects an arc fault signal of the power switch, it sends a current pulse to the electromagnetic coil to make it energized to generate a magnetic field, and the iron core drives the moving contact away from the static contact. A fan for cooling is provided beside the power switch. A protection mechanism is provided beside the transformer, which is composed of an insulating cover and an insulating baffle. When the moving contact is separated from the static contact, the insulating cover moves towards the transformer and sleeves the transformer, and then the insulating baffle abuts against the insulating cover to play a protective role. This device can detect faults in the inverter and cool down and insulate the fault area.

A high power (HP) generator (10) configured to deliver pulsed high power of high voltage and / or current values ​​to a capacitive load, in particular to a plasma process, - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, - a control unit (22) have a current boost capability of at least 10 A / μs, and / or Capable of withstanding voltages of approximately 0.5 kV or more with a voltage change rate of 15 kV / μs or more It further includes switching units (24, 26, 28).

A method of detecting presence or absence of a magnetic measurement probe at a measurement launch position in an electromagnetic coil of an ophthalmic instrument includes applying a temporary current pulse to the electromagnetic coil, detecting a counter-electromotive force voltage spike induced in the electromagnetic coil by the current pulse, evaluating a decay behavior of the counter-electromotive force voltage spike, and correlating the decay behavior of the counter-electromotive force voltage spike to presence or absence of the measurement probe at the measurement launch position.

Implementations described herein are related to a diode driver that recirculates residual current from an operating current pulse in an inductor. Such recirculation produces a diagnostic current pulse to a diode array for measuring a voltage drop across a portion of the array. For example, after a controller charges an inductor of a diode driver to deliver operating current pulses to a portion of a diode array for illumination, the controller causes a residual current to remain and recirculate in the inductor. In some implementations, in response to the recirculating current reaching a monitoring threshold, the controller delivers a monitoring pulse to the portion of the diode array to measure a voltage drop across the portion of the diode array. In some implementations, the controller may infer defectivity in the portion of the array from such voltage drop measurements over time.

The invention belongs to the field of subsea pipeline welding, and particularly discloses a bottom sealing welding process curve based on a narrow-gap U-shaped groove, application and a product, the bottom sealing welding process curve is used for welding the narrow-gap U-shaped groove, and on the basis of a CMT reference curve, at least one current pulse is introduced before and after the short-circuit stage respectively, so that the narrow-gap U-shaped groove is welded. Therefore, the root fusion width is increased, the root recess is avoided, the peak current and the cycle time are increased to increase the welding heat input, and the peak current rising rate and the peak current falling rate are reduced to prolong the peak current acting time. According to the method, the welding heat input and the root fusion width can be increased, the excellent single-face welding and double-face forming effect is achieved under the conditions of zero-gap assembly and no liner, the problem of weld defects is solved, and the service performance of the acid marine pipeline is effectively improved.

The invention discloses an abnormity identification method and device of a battery management system and a nonvolatile storage medium. The method comprises the steps that current pulses corresponding to a target battery are acquired, and the current pulses comprise a charging pulse and a discharging pulse; based on the current pulse and an equivalent circuit model, battery model parameters are determined, the equivalent circuit model is used for simulating the operation state of the target battery, and the battery model parameters comprise ohmic internal resistance, polarization internal resistance and polarization capacitance; estimating the state of charge of the target battery based on the battery model parameters to obtain a first state of charge estimation value; acquiring a second charge state estimation value of the target battery recorded in the target battery management system; and comparing the first state-of-charge estimation value with the second state-of-charge estimation value, and determining an abnormal identification result of the target battery management system. The technical problem that the failure of the BMS battery management system cannot be found in time in the charging process at present is solved.

The invention provides a battery impedance measuring device which comprises N pulse excitation switches which are controlled to be switched on and switched off by pulse excitation signals and can generate pulse excitation current which serves as current excitation of a battery unit; the N series resistors and the N pulse excitation switches form N series circuits in a one-to-one correspondence mode, and the two ends of the N series circuits are connected to the positive electrode output ends and the negative electrode output ends of the N battery units in a one-to-one correspondence mode; and the impedance acquisition circuit can be connected with the positive electrode end and the negative electrode end of each battery unit, and is used for acquiring voltage response signals of the corresponding battery units when current excitation is carried out on the N battery units.

The invention relates to a method for operating a motor vehicle locking system (1), wherein the motor vehicle locking system (1) has a drive (2) with an electric drive motor (3) and a control arrangement (4) for controlling the drive (2) in order to provide a motorized closing function for an adjustable closure element (5) of the motor vehicle (6), wherein the control arrangement (4) has an electrical, rechargeable energy store (9) with at least one capacitor (10), wherein an electrical emergency supply voltage is made available by means of the energy store (9) in emergency operation, in particular in the event of a failure of a normal supply voltage.It is proposed that a diagnostic routine is carried out by means of the control arrangement (4), in which the capacitor (10) is connected to a reference potential via an inductance (11) in order to generate a current pulse with a pulse duration of less than 1000 µs, and in which an equivalent resistance of the capacitor (10) is determined on the basis of a capacitor current measured in the current pulse and a capacitor voltage measured in the current pulse.

The invention discloses an insulation discharge defect detection method and system based on solar-blind ultraviolet and UVA dual wavebands, and belongs to the technical field of electrical equipment insulation state detection.The method comprises the steps that a solar-blind ultraviolet waveband optical signal, a UVA ultraviolet waveband optical signal, a discharge current pulse signal, a solar-blind ultraviolet waveband image and a UVA waveband image of detected equipment are synchronously collected; carrying out lock-in amplification noise suppression on the UVA ultraviolet light signal, and extracting a photon event rate feature; extracting a light intensity peak value characteristic from the solar blind ultraviolet light signal, and calibrating a discharge quantity value through a nonlinear regression model in combination with a photon event rate; carrying out dynamic range expansion on the UVA ultraviolet image, and carrying out wavelet fusion on the UVA ultraviolet image and a solar blind ultraviolet image; fractal dimension features of the discharge channel are extracted from the fused image; and inputting the photon event rate, the light intensity peak value, the discharge capacity value and the fractal dimension features into a deep learning model, and outputting defect types and severity.

Radio-frequency (RE) microneedling skin resurfacing systems are described including an electrode with an array of partially insulated needles, where the needles' exposed tips conduct bipolar RF electric current into a patient's skin, thus enhancing collagen production that stretches the skin. The electrode is carried by an application handle, which connects to an RF current generator. The applied treatment cycles utilize vacuum to pull the skin against the needles and dielectric coolant to cool the epidermis. The needles' array penetrates the skin to a pre-determined depth inside the dermis layer, followed by a sequential delivery of RF bipolar current pulses. The treatment cycle is controlled by an algorithm, designed to raise the dermis layer temperature for a certain duration. The treatment cycle and algorithm rely on dynamic impedance measurements and temperature measurements by thermistors to assure optimized controlled heating of the dermis layer to a target temperature between 45 and 69°C.

The invention discloses a solid-state battery bidirectional DCDC multi-target optimization control system integrated with a BMS, and belongs to the technical field of battery management systems, and the system comprises an acoustic library building module which is used for applying current pulses of different amplitudes and rates, and collecting a high-frequency broadband sound wave response spectrum; analyzing the propagation speed, attenuation characteristics and frequency spectrum change of sound waves in the multilayer structure, and establishing an acoustic characteristic base library; the risk identification module is used for applying a micro-current detection pulse in a predetermined mode and capturing a transient acoustic response; accurate sensing of the microscopic physical state of the solid-state battery under the dynamic load working condition can be achieved, high-power charging and discharging and working condition abrupt change scenes can be rapidly adapted, the power response timeliness and the control precision are improved, meanwhile, global optimal balance of efficiency, service life and power stability is achieved, uneven deposition of lithium ions is restrained, and the service life of the solid-state battery is prolonged. Interface impedance and failure risks are reduced, and safe and reliable operation of the system is guaranteed.

The invention provides a voltage regulation circuit, charging equipment and system suitable for multiple platforms. The voltage regulation circuit is provided with a current pulse acquisition unit, a voltage comparison unit, a resistance value regulation unit, a PFC control unit, a pulse generation unit, a voltage division unit and a voltage regulation unit. A current pulse acquisition unit is connected with a PFC correction circuit and a voltage comparison unit, the voltage comparison unit is further connected with a resistance value adjustment unit, the resistance value adjustment unit is further connected with a PFC control unit through a voltage division unit, a pulse generation unit is connected with the resistance value adjustment unit, and the PFC control unit is connected with the voltage adjustment unit. The pulse width of the output current of the DC-DC charging circuit is acquired, the output voltage of the PFC correction circuit is adjusted according to the duty ratio reflected by the pulse width of the output current, the duty ratio is adjusted, and the charging efficiency and the safety coefficient are improved.

The invention relates to a method for adjusting the height and flatness (14, 16, 50) of a monopolar and / or bipolar plate (72), which is manufactured from a base plate (10) or from a base plate (10) and a top plate (12) and is joined by resistance welding. Indentations (32, 34) or protrusions (28) are embossed into the base plate (10) or the top plate (12), the depressions or protrusions (28) serving as tolerance compensation elements (60). The base plate (10) and the top plate (12) are then placed one on top of the other between two flat electrodes (36, 38), which are brought together to a defined distance (44) determined by at least one spacer (46).Subsequently, the depressions or protrusions (28) in the lower sheet (10) or the upper sheet (12), which serve as tolerance compensation elements (60), are pressed into the opposing lower or upper sheet (10, 12), forming an indentation geometry (54) in the latter. A current pulse is then applied to the electrodes (36, 38) to increase the temperature at the contact points formed by the depressions or protrusions (28) and the indentation geometry (54), thereby creating a metallurgical bond.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, The control unit (22) may further be configured to sequentially select the contributions of the LP generators (14, 16, 18) through the LP generators (14, 16, 18), in particular each pulse sequence may start with a different LP generator (14, 16, 18).

The present invention belongs to the technical field of magnetic storage. Specifically, the present invention relates to a method and apparatus for generating Skyrmions on the basis of current pulses, and a magnetic field control method and apparatus therefor. The magnetic field control method comprises: acquiring a target sample, wherein the target sample comprises electrodes and a material layer; placing the target sample in a controllable magnetic field, and applying preset current pulses to the electrodes, so as to generate Skyrmions on the material layer on the basis of the controllable magnetic field and the preset current pulses; and controlling the erasure and writing of the Skyrmions by means of the controllable magnetic field. Therefore, the present invention solves the problems in the prior art of techniques being complex and the cost being high.