11 results about "Direct-current discharge" patented technology

The invention discloses a closed CO2 laser adopting diffusion cooling and longitudinal direct current discharge, and belongs to the technical field of laser beam combination, and the closed CO2 laser comprises a vibration suppression component which comprises a beam combination assembly, a laser used for emitting laser beams is arranged in the beam combination assembly, and a reflex reflector used for reflecting the laser beams is arranged in the beam combination assembly. An optical element used for transmitting and reflecting different laser beams is arranged in the beam combining assembly, through accurate light distribution of a reflex reflector and the optical element, reflection and transmission cooperative beam combination of four paths of laser beams with different polarization and different wave bands is achieved, and finally the four paths of laser beams are combined into one laser beam to be output. On the premise of keeping the original beam quality of the single-path laser, the power of the combined beam is increased by several times; and the beam combining light path is accurately matched with the light emitting path of the laser, additional optical loss is avoided, the light spot uniformity, the coaxiality and the polarization characteristic of the combined laser beams are guaranteed, and the strict requirement of industrial precision machining for the quality of the laser beams is met.

The embodiment of the invention provides a direct current V2L discharge switching method and device, and electronic equipment. The method comprises the following steps: obtaining a first voltage value of a CC2 detection point in an improved national standard charging guide circuit by responding to a switching operation of a user for a selector switch, according to the improved national standard charging guide circuit, in a vehicle interface part of the national standard charging guide circuit, a change-over switch and a second resistor are connected in parallel on the basis of a first resistor between vehicle body grounding and a CC2 detection point; according to the first voltage value, the V2L discharge protocol is switched to a target discharge protocol, the target discharge protocol is a national standard charge protocol or a forward development discharge protocol, and the forward development discharge protocol is a reverse development protocol of the national standard charge protocol. The method is used for achieving the purpose of intelligent discharge switching which does not need manual transition intervention and is compatible with multiple protocols.

The invention belongs to the technical field of high-voltage power distribution of new energy automobiles, and particularly relates to a multi-branch power flexible switching circuit and a multi-branch power flexible switching method. Each circuit branch comprises an electric box group, a manual maintenance switch MSD, a direct current discharging relay, a power diode, a direct current charging relay I, a pre-charging relay, a pre-charging resistor, a current sensor, a direct current charging relay II and a gun base; the manual maintenance switch MSD, the direct-current discharge relay and the power diode are sequentially connected in series; the direct-current charging relay I is connected in parallel with the direct-current discharging relay and the power diode; the pre-charging relay, the pre-charging resistor and the direct-current discharging relay are connected in parallel; the current sensor and the direct current charging relay II are sequentially connected in series; according to the device, opening and closing control is carried out on circuit branches through the high-voltage sampling unit HVB, different electric box groups are selected for discharging, and the problem that a multi-branch power supply discharging scheme is single is solved.

The invention provides an intracardiac electrical cardioversion system, comprising: an intracardiac defibrillator, the intracardiac defibrillator comprising a host, a line for outputting an intracardiac electrical signal and a line for inputting a body surface electrocardiosignal; the intracardiac cardioversion catheter is in signal connection with the intracardiac defibrillator host; wherein the system is configured to be switchable between an ECG mode and a DC direct current discharge mode; in the ECG mode, the intracardiac defibrillator transmits an intracardiac electric signal picked up by the catheter to an external electrophysiological device; in the DC direct current discharge mode, the intracardiac defibrillator can release cardioversion electric shock with a set energy value to cardiac muscle tissue through the catheter. And the purposes of improving safety and success rate are achieved.

The invention provides a low-voltage electrochemical energy storage system and a control method thereof. The low-voltage electrochemical energy storage system converts alternating current input by a power grid into direct current and inputs the direct current to a direct-current bus, and converts the direct current of the direct-current bus into alternating current and outputs the alternating current to a load. When the voltage of the direct-current bus is within a preset charging voltage range, the bidirectional conversion device converts the direct-current power of the direct-current bus into the direct-current charging power of the battery module and controls the charging current of the connected battery module to be a first current value; and when the voltage of the direct-current bus is within the preset discharge voltage range, converting the direct-current discharge power of the battery module into the direct-current power of the direct-current bus, and controlling the discharge current of the battery module to be a second current value. The battery cluster capacity and power configuration can be increased or decreased as required without changing the bus structure, the system integration complexity and the insulation requirement are reduced, and the cost, the efficiency and the battery life are considered.

The application discloses a closed CO2 laser adopting diffusion cooling and longitudinal direct-current discharge, belongs to the technical field of laser beam beam combining, and comprises a vibration suppression component, the vibration suppression component comprising a beam combining assembly, a laser for emitting laser beams is arranged in the beam combining assembly, a folding mirror for reflecting the laser beams is arranged in the beam combining assembly, and optical elements for transmitting and reflecting different laser beams are arranged in the beam combining assembly. Through accurate light distribution of the folding mirror and the optical elements, reflection and transmission of four different polarization and different waveband laser beams are realized, and the four different polarization and different waveband laser beams are finally combined into one laser output. On the premise of maintaining the original beam quality of the single laser, the power of the combined beam is improved by several times. The beam combining path is accurately matched with the laser light path, there is no additional optical loss, the spot uniformity, coaxiality and polarization characteristics of the laser beams after beam combining are ensured, and the strict requirements of industrial precision machining on the quality of the laser beams are met.

The application discloses a fluorine-containing lithium battery recycling method, comprising the following steps: S1, stripping the battery to obtain a battery core, and collecting positive and negative electrode sheets respectively; S2, connecting the positive and negative electrode sheets to the positive and negative terminal posts of a direct-current discharge device respectively for low-voltage discharge treatment; S3, using Na2SO4 aqueous solution to perform ultrasonic-assisted deep discharge on the positive and negative electrode sheets after low-voltage discharge treatment until the voltage is stably reduced to <0.1V; and S4, vacuum drying the positive and negative electrode sheets after deep discharge to remove electrolyte, and performing multi-stage crushing and screening to obtain electrode sheet powder; the application realizes ultrasonic-assisted deep discharge, guarantees the purity of target metal ions in a lithium-rich solution, monitors and controls the concentration of Ca 2+ after fluorine removal, avoids the interference of impurity ions, and makes the purity of recycled lithium salt and the purity of recycled copper foil and aluminum foil higher, so that the waste of valuable metals is reduced, and the raw material utilization rate of unit fluorine-containing lithium battery recycling is improved.

The invention discloses a method and a system for predicting rod-plate gap direct current discharge voltage at an extreme temperature, and belongs to the technical field. The method comprises the following steps: taking the structural features and the meteorological features as feature input data; dividing the processed data into a training set and a test set according to a preset proportion, and optimizing key hyper-parameters of an AdaBoost-SVR model on the training set by adopting a five-fold cross validation grid search method so as to select an optimal hyper-parameter combination to construct a model; and inputting the feature input data into the AdaBoost-SVR model for prediction to obtain the direct current discharge voltage of the rod-plate gap at the extreme temperature. The method is suitable for data with small samples, reliable prediction values can be output only by depending on basic structure features and meteorological feature input of the rod-plate gap under the direct-current voltage without complex calculation, and the technical method has a continuous learning mechanism and can optimize the prediction precision along with test data accumulation.

This invention discloses a high-power CO2 amplifier and its operating method, relating to the field of EUV lithography technology. The amplifier includes a vacuum system, a resonant cavity, and a pump source. The vacuum system consists of a turbopump, a vacuum pump, stainless steel tubing, and a glass tube forming a gas circulation channel. A large-diameter ceramic discharge tube is placed within the channel, with high-transmittance windows mounted at both ends via input and output window assemblies. The pump source uses a DC high-voltage power supply in conjunction with an anode needle and a cathode ring electrode arranged axially along the ceramic discharge tube. The operating method involves evacuating the cavity to a low pressure and backfilling it with a mixture of helium, carbon dioxide, and nitrogen. The turbopump is then activated to create an axial fast flow. A DC high voltage is set, and 10.6μm signal light is injected into the input window to achieve pulse amplification. The combination of the large-diameter discharge channel and the axial fast-flow DC discharge improves the amplifier's saturation intensity and discharge uniformity, reduces thermal damage, and is suitable for post-amplification stages of LPP-EUV light sources.

The application discloses a kind of vehicle-mounted high-voltage battery pack charging and discharging power supply system and control method thereof, it is related to vehicle-mounted high-voltage energy storage technical field, the method comprises: system wake-up request upper low voltage, obtain working parameter;Monitoring battery voltage value and component failure and CAN communication;Satisfy battery voltage normal, system normal work and component are without failure and then prompt low-voltage standby;System normal request upper high voltage or request charging;Monitoring high-voltage interlock, fault condition and bus voltage during pre-charging;System high-voltage state normal and normal upper high voltage then prompt pure electric discharge;After upper high voltage, system normal request direct current charging, alternating current charging or inverter discharge.The application adopts high-voltage battery pack to meet the high-voltage direct current power demand of system and load demand, supports multiple charging and discharging application scenarios, such as direct current charging alternating current discharge, direct current discharge alternating current discharge and the like, flexibly identifies discharge or charging mode, can effectively control double-gun charging and discharging according to real-time working condition.

A tungsten-containing material that has an oxygen generation quantity of more than 1 ppm and 20 ppm or less at 2100°C to 2300°C as detected by oxygen analysis based on an oxygen separation method, and contains 5 ppm or more and 30 ppm or less of potassium.