6458 results about "High current" patented technology

The present invention provides an impedance matching method for an ultrasonic therapeutic apparatus, comprising: obtaining a rated load impedance value of a power amplification module; obtaining an impedance value of a transducer module; determining an expected impedance value to which the impedance matching module should transform the impedance value of the transducer module according to the rated load impedance value; determining the impedance matching module according to the impedance value of the transducer module and the expected impedance value; completing impedance matching of the ultrasonic therapeutic apparatus; performing preliminary impedance matching through a pre-conversion unit composed of multiple transformers of the impedance matching module and completing impedance matching of the ultrasonic therapeutic apparatus through a compensating conversion unit, i.e., an inductor-capacitor impedance, thereby overcoming the problem of using only a single impedance matching network under high power, high current and high frequency conditions, i.e., the inability to match the expected impedance value using only a conversion unit composed of transformers, and the problem of a lack of suitable inductors on the market and large volume of self-made inductors when using only an inductor-capacitor impedance matching network.

The invention discloses a standardized electrical switch cabinet detection method based on the Internet of Things, and relates to the technical field of electrical switch cabinet detection, and the method specifically comprises the following steps: obtaining the core information of all abnormal data generated by all sensors in an electrical switch cabinet in real time, and carrying out the analysis after obtaining, evaluating the priority of each abnormal data in the electrical switch cabinet with the high current leakage phenomenon, and dividing each abnormal data into low-priority abnormal data, medium-priority abnormal data and high-priority abnormal data according to an evaluation result; and according to the division result of each abnormal data, constructing an abnormal data hierarchical sorting mechanism, and respectively adopting different sorting and processing measures for low-priority abnormal data, medium-priority abnormal data and high-priority abnormal data. According to the method, the problem of unreasonable priority processing of the abnormal data in a high-current leakage scene is solved, quick response and accurate detection are realized, and the fault processing efficiency and the system reliability are improved.

The invention relates to the technical field of cylindrical lithium ion battery production, and discloses a method for detecting insufficient welding of a cylindrical lithium ion battery, and the method comprises the following steps: S1, appearance inspection; s2, initial internal resistance benchmark test; s3, applying a short-time large-current pulse to the battery by using a pulse generator, simulating an actual load condition, and recording an instantaneous voltage drop and current response curve of the voltage of the battery end during the pulse period; s4, performing infrared thermal imaging identification and data processing; s5, learning the picture and establishing a model; s6, comparing the test picture and the data with the model; s7, dynamic internal resistance calculation; s8, cold solder joint query and sorting processing; and S9, retesting the electrical performance. According to the invention, the technologies of dynamic internal resistance measurement, nondestructive X-ray or ultrasonic detection, rate discharge test and the like are adopted, so that efficient, accurate and nondestructive detection of the cold solder joint of the cylindrical lithium ion battery is realized, and the production efficiency and the detection precision are remarkably improved.

The invention discloses a power supply circuit, a power supply method, a server, a product and a medium, and relates to the technical field of server power supply, the total power demand of the server is dispersed through the parallel design of multiple power panels, the bus current of a single board connected to a first voltage is reduced to the safe bearing range of an MOS tube, the impact risk is reduced, and the service life of the server is prolonged. The electronic fuse is matched with the single-board power to set an overcurrent protection threshold value, and the short-circuit protection response time is shortened; each board is independently provided with a power supply brick to realize second voltage localization conversion and single board output current reduction, a multi-board output end combined power supply design is combined, a heat source is dispersed to eliminate heat accumulation, the through-current capability is multiplied through a parallel path, and the heat dissipation and electrical design feasibility of the circuit board is improved. The technical problems of MOS tube over-limit, overcurrent protection delay, circuit board heat accumulation and difficult through-flow caused by large current brought by a power supply in a high-power server are solved, and the technical effects of enhancing power supply reliability and optimizing energy efficiency are achieved.

The invention discloses a server power supply system and a server, relates to the field of server power supply, and is used for solving the problem of high energy loss in a traditional alternating current power supply architecture. The power conversion module converts the power supply into high-voltage direct current with the voltage not lower than the preset voltage, the high-voltage direct current is transmitted to the power distribution board of the server through the bus copper bar, and the bus copper bar serves as a transmission medium of the high-voltage direct current and has low resistance and high current-carrying capacity. Extra loss caused by electromagnetic induction and a capacitance effect in alternating current transmission is avoided; high-voltage direct current is directly input to the power distribution board, so that multiple times of conversion in an intermediate link are avoided, and energy loss in the conversion process is reduced; and the power distribution board directly converts the high-voltage direct current into the voltage required by the load, so that the loss of multi-stage conversion in the traditional architecture is reduced. According to the invention, the power transmission efficiency is improved, the energy loss is reduced, and the requirement of a modern high-computing-power and high-energy-consumption server for efficient power supply is met.

A high current connector includes a base, at least one terminal and at least one insulating piece. The base has an inner wall defining a passage. The terminal is disposed in the passage. The insulating piece is disposed in the passage. The insulating piece is at least partially located between the terminal and the inner wall. A front end of the insulating piece exceeds a front end of the terminal.

The invention provides a test system and method for calibrating high-power large-current parameters, and belongs to the technical field of power electronic component testing and metering, and the system comprises a high-power large-current standard device, a standard current sensor and a high-speed data acquisition unit. The high-power large-current standard device is used for providing high-power large current for the load to be tested; and the standard current sensor and the high-speed data acquisition unit are used for calibrating the large current of the high-power large-current standard device. The high-power large-current parameter traceability is realized, and the high-power large-current parameter quantity value is ensured to be accurate and reliable.

The invention discloses a high-current wide-capacitance-range LDO (Low Dropout Regulator) based on a frequency compensation circuit. The LDO comprises a first-stage operational amplifier, a second-stage operational amplifier and a third-stage operational amplifier The secondary operational amplifier is used for carrying out secondary amplification on the amplified error signal; the driving circuit is used for enhancing the driving capability of the error signal subjected to secondary amplification; the current output circuit is used for adjusting the output current of the output demand according to the secondary amplified error signal with the enhanced driving capability and the input voltage; the feedback circuit is used for generating new feedback voltage according to the output current; the first-stage operational amplifier is also used for amplifying a new error signal; and the frequency compensation circuit is used for adjusting the positions of a plurality of zero poles in the new error signal according to the output current by utilizing the multi-zero pole dynamic compensation branch and the current buffer compensation branch so as to offset a secondary pole and widen the whole unit gain bandwidth at the same time to obtain an adjusted error signal. According to the invention, a large bandwidth can still be obtained in a large current output range and a large load capacitance range.

Disclosed in the present invention are a method and system for determining a short-circuit current of a grid-forming power electronic device. The method comprises: establishing a short-circuit equivalent model for a grid-forming power electronic device, and initializing a dynamic compensation current value to 0; acquiring a node voltage prediction value and a fixed branch short-circuit current prediction value on the basis of the present dynamic compensation current value and the short-circuit equivalent model for the grid-forming power electronic device; determining a power electronic device short-circuit current prediction value on the basis of the present fixed branch short-circuit current prediction value and the present dynamic compensation current value; determining the maximum current limit value, an active current limit value and a reactive current limit value of the power electronic device under an actual short-circuit fault; performing three-level amplitude limiting, and determining an active current value and a reactive current value after amplitude limiting; calculating a compensation current dynamic correction amount; and if the present compensation current dynamic correction amount is less than or equal to a preset threshold, determining that the present power electronic device short-circuit current prediction value is the short-circuit current actual value of the grid-forming power electronic device.

The invention discloses an accurate zero crossing point control method for a built-in relay of a large-current electric energy meter, which relates to the technical field of power electronics and intelligent metering and comprises the following steps of: receiving a power grid voltage digital signal, determining a voltage zero crossing point by comparing symbol changes of adjacent sampling values, establishing a phase corresponding relation between voltage and current, and calculating a current phase corresponding relation; generating current zero crossing point prediction data; when a relay switching instruction is received, the specific moment of the next current zero crossing point is calculated, and the control signal sending moment is determined; a relay driving control signal is sent, the actual action completion moment of the relay is collected, the deviation from the expected zero crossing moment is calculated, and the mechanical action delay time parameter of the relay is corrected. By predicting the current zero-crossing time and considering the mechanical action delay characteristic of the relay, accurate switching of the built-in relay at the actual current zero-crossing point is achieved, meanwhile, the self-adaptive adjusting capacity is achieved, the arc energy during large-current switching is reduced, the service life of the relay is prolonged, and the reliability of the electric energy meter is improved.

A method for estimating current-dependent non-linear equivalent circuit model (ECM) parameters of a battery may include measuring a battery voltage across terminals of the battery and a battery current drawn from the battery, modelling behavior of the battery with an impedance model having impedance model parameters, dynamically analyzing the battery current drawn from the battery by a load, dynamically determining safe operating limits for an augmented current for augmenting the current drawn by the load, based on analysis of the battery current and the safe operating limits, determining the augmented current, generating the augmented current to be drawn from the battery, and estimating the impedance model parameters when the augmented current is drawn from the battery.

The invention discloses a storage battery charging control system and a control method thereof, and relates to the technical field of storage battery charging, and the control method comprises the following steps: firstly, comprehensively obtaining multi-modal sensing data from a storage battery; preprocessing the obtained original data, and extracting key features beneficial to identification of lithium ion migration blocking from the preprocessed data under a detection window; and inputting the extracted features into a pre-learned deep learning model, and carrying out intelligent assessment on the lithium ion migration blocking risk in the storage battery charging process through the deep learning model. Multi-modal sensing data and a deep learning model are utilized, the lithium ion migration blocking risk is accurately identified, an electrochemical polarization rapid change factor and an electrode dynamics non-equilibrium factor are extracted to generate a deposition index and classify the deposition index, a charging strategy is dynamically adjusted, high-current charging is carried out during normal migration, and current is reduced during blocked migration. Lithium deposition and dendritic crystal risks are reduced, efficiency and safety are improved, and the service life of the battery is prolonged.

The invention discloses a multi-physics field simulation method, device and equipment for a large-current connecting piece and a storage medium, and discloses the multi-physics field simulation method for the large-current connecting piece, and the method comprises the steps: carrying out the dynamic simulation of a contact process through a dynamic simulation model of the large-current connecting piece, and determining a dynamic simulation result; and determining a first state geometric model of the large-current connecting piece and a contact pressure function of each contact surface according to a dynamic simulation result, and further performing multi-physics field coupling simulation on the large-current connecting piece in a contact state to obtain a multi-physics field simulation result. According to the mode, when force-electricity-heat multi-physical field joint simulation is carried out on the large-current connector contact element, dynamic simulation is carried out firstly, electrothermal coupling simulation in a contact state is carried out based on a simulation result, and the simulation process is disassembled, so that the convergence and stability of simulation calculation are improved; and reliable information is provided for subsequent design optimization of the large-current connecting piece.

The invention provides a battery heating control method and device, equipment, a storage medium and a program product, and relates to the technical field of battery heating. The method comprises the steps that when the vehicle meets the pulse heating condition, the saturation current of a motor for adjusting the battery temperature is determined based on the maximum negative electrode potential of a battery cell in a battery; determining the maximum pulse heating current of the motor based on the maximum current and the saturation current borne by the bus of the motor; and performing pulse heating on the battery based on the maximum pulse heating current. By considering the influence of the cathode potential, the cathode potential of the battery cell is kept in a safe range in the pulse heating process, and the risk of lithium precipitation of the battery cell is effectively reduced, so that the safety of the battery is improved, and the service life of the battery is prolonged; besides, the saturation current of the motor is determined based on the maximum cathode potential, and the maximum pulse heating current of the motor is further determined, so that the heating rate of the battery can be maximized on the premise of ensuring the safety of the battery, and the performance of the battery in a low-temperature environment is improved.

The invention discloses a lithium ion battery modified graphite negative electrode material and a preparation method and application thereof, and belongs to the technical field of batteries, the negative electrode material is of a core-shell structure, an internal core is graphite particles, an external shell is a high electronegativity nonmetal / metal heteroatom co-doped carbon material of N, O, F and the like, the weight ratio of carbon doped in the shell part to graphite is X, and 2% < = X < = 20%. Compared with the prior art, the negative electrode material can form an SEI film which is more stable, compact and continuous and is rich in fluoride with high ionic conductivity, so that the SEI film can be effectively prevented from being broken and lost in the later charging and discharging process, and the service life of the negative electrode material is prolonged while the first-round coulombic efficiency of the negative electrode material is remarkably improved. And the cycle life and the high-current charge-discharge performance of the negative electrode material can be remarkably improved.

A circuit device includes a current source circuit, a first charging circuit that supplies a first charging current to a charging node, a second charging circuit that supplies a second charging current to the charging node, and a control circuit that sets a current value of the first charging current and the second charging current, based on a current setting value. When the current setting value is in a first range, the first charging circuit supplies the first charging current. When the current setting value is in a second range on a higher current side, the second charging circuit supplies the second charging current. At switching between the first range and the second range, the first charging circuit supplies the first charging current and the second charging circuit supplies the second charging current.

The invention belongs to the technical field of connectors, and discloses a high-voltage large-current connector which comprises a working box and a plug shell, the inner wall of the working box is fixedly connected with a socket shell, the two ends of one side of the inner wall of the socket shell are fixedly connected with high-voltage terminal pieces respectively, the two sides of the outer wall of the socket shell are fixedly connected with protruding rods respectively, and the high-voltage large-current connector further comprises a plug, when the current connecting mechanism is pulled out of the plug shell, firstly, a connecting block is pushed in the direction close to the working box, the connecting block drives a transverse plate and a bent plate to move, and the bent plate drives a movable plate to push and extrude a sliding plate, so that the sliding plate pushes nitrogen in a fixed shell into a conical head gas pipe; nitrogen enters the socket shell and the plug shell through the conical head gas pipe, generation of an electric arc and consumption of electric arc energy are restrained through the chemical stability of the nitrogen, generation of the electric arc can be effectively restrained, when a high-voltage terminal piece is separated from a high-voltage terminal line, the electric arc energy can be rapidly consumed through injection of the nitrogen, and damage of the electric arc to equipment is prevented.

High-power- (HP-) generator (10) configured to deliver high power with a high value of voltage and / or high current value to a pulsing unit (3), wherein the pulsing unit (3) is configured to deliver pulsed high power with a high value of voltage and / or high current with pulse-high-duration of 10 µs or less and pulse- low-duration of 10 µs or less to a capacitive load, in particular to a plasma process, the HP-generator (10) comprises: - a control input (11), configured to be connected to a control signal from an external pulsing control (9), wherein the pulsing control (9) also controls a pulse-high-duration and a pulse-low-duration of the pulsing unit (3), - a control unit (22) configured to adjust the output of the HP-generator (10) responsive to the signal at the control input (11) in a way that the output voltage and / or current of the HP-generator (10) may be changed during a pulse-low-duration and is constant during the following pulse-high-duration of a pulse at the output of the pulsing unit (3)

A system for estimating current-dependent non-linear equivalent circuit model (ECM) parameters of a battery may include measurement circuitry for measuring a battery voltage across terminals of the battery and a battery current drawn from the battery. The system may also include an impedance model having impedance model parameters, the impedance model for modelling behavior of the battery. The system may further include an augmented stimulus signal generator configured to dynamically analyze the battery current drawn from the battery by a load, based on analysis of the battery current, determine an augmented current for augmenting the current drawn by the load; and generate the augmented current to be drawn from the battery. The system may also include a battery model estimator for estimating the impedance model parameters when the augmented current is drawn from the battery.

The invention belongs to the technical field of power electronics, and particularly relates to a modular commutated converter with high overload capacity. The modular commutation type converter is formed by connecting at least one large-current turn-off commutation bridge and at least one cascade module chain in parallel, wherein the large-current turn-off commutation bridge is an H-bridge circuit comprising four large-current turn-off commutation bridge arms; the large-current turn-off commutation bridge arm comprises at least one single switch device module SDM and at least one high-turn-off single switch device module HDM which are connected in series, and the current turn-off capacity of the high-turn-off single switch device module HDM is larger than the current at the turn-off moment of the large-current turn-off commutation bridge arm. According to the technical scheme of the invention, high-power overload operation can be realized in a short time, so that voltage and inertia support can be effectively carried out on a power grid. Compared with an existing structure, the topological structure has the advantage that the manufacturing cost is obviously reduced.

The subject invention is concerned with systems and methods advantageously applying finite element analysis to establish design rules for a highly sensitive piezo-resistive pressure sensor with an output that is high enough to be detectable by simple and inexpensive circuits and therefore ensure wearability. Four frequently reported micro-feature shapes in micro-patterned piezo-resistive sensors are provided, where the micro-dome and micro-pyramid yield the highest sensitivity. Investigations of different conductivity values of micro-patterned elastomers show that coating the elastomer with a conductive material (e.g., a metallic coating) leads to higher current response when compared to composited conductive elastomers. Advantageous geometric parameters and spatial configurations of micro-pyramid design of piezo-resistive sensors are provided. Results show that an enhanced sensitivity and higher current output can be achieved by a lower spatial density configuration of three micro-features per millimeter length, a smaller feature size of around 100 μm, and a 60-50 degrees pyramid angle.

The invention relates to a large current tester for charging pile chip detection, which comprises a base and a cover body, and is characterized in that the top of the base is provided with a positioning mechanism for positioning a chip; a testing mechanism for detecting a chip is mounted at the bottom of the base, the testing mechanism comprises a testing plate and a plurality of probe modules electrically connected with the testing plate, each probe module comprises a heat conduction block, a connecting piece and probe elastic pieces distributed in an array, the connecting piece is sequentially connected with the heat conduction block and the probe elastic pieces in series, and the probe elastic pieces are electrically connected with the testing plate. The probe elastic sheet is arranged on the inner side of the heat conduction block to form a probe module; a pressing assembly for fixing the chip is arranged on the inner side of the cover body, and a control assembly for driving the pressing assembly to be close to the base is arranged at the top of the cover body. During testing, the probe elastic sheets are elastically deformed, stable contact between each probe elastic sheet and the corresponding pin can be guaranteed, the probe elastic sheets are distributed independently, it is guaranteed that the probe elastic sheets have high conduction efficiency in the detection process, and the stability and precision of large-current testing are guaranteed.

The invention relates to a direct-current circuit breaker based on a thyristor and an on-off method of the direct-current circuit breaker, and belongs to the technical field of direct-current middle-high voltage power system fault protection. The direct-current circuit breaker comprises a main switch branch, a current transfer branch, a voltage-limiting energy consumption branch and a pulse commutation loop, the direct-current circuit breaker is connected with a power system in series, and the main switch branch is connected with the current transfer branch. Two nodes connected in series are respectively marked as Q1 and Q2, the main switch branch and the voltage-limiting energy consumption branch are connected in parallel through the Q1 and Q2, one ends of secondary sides of two high-frequency transformers in the pulse commutation loop are respectively connected to the Q1 and Q2, and the other ends of the secondary sides of the two high-frequency transformers in the pulse commutation loop are respectively connected to two ends of the current transfer branch. The problem that in the prior art, a large number of pulse charging and discharging loops are configured for meeting the fault large-current breaking requirement, and consequently the size and cost are increased is effectively solved.

The invention relates to a formation method of a lithium-free negative electrode battery, and belongs to the technical field of lithium batteries. The testing method comprises the following steps: standing at low temperature before first-circle charging to enable the interior of the battery to reach a steady state, carrying out short-time and low-electric-quantity charging by adopting large current, and charging and discharging for several circles by adopting small current after the interior of the battery reaches the steady state at room temperature. According to the formation process provided by the invention, a compact seed crystal layer formed by lithium cores can be formed on the surface of Cu in situ at low temperature and high current density, so that the physical binding force between a deposited lithium layer and a copper substrate is remarkably enhanced, and the contact resistance is reduced, thereby inhibiting the growth of moss or dendritic metal lithium and realizing low-porosity and high-compactness lithium deposition; and a more uniform and stable SEI film is formed through low-current deposition, so that the coulombic efficiency and the cycling stability of the battery are improved.

The invention relates to a lithium ion battery grouping method. The method comprises the following steps: performing low-current formation charging on battery cells, and monitoring and removing abnormal battery cells; then carrying out aging treatment and screening abnormal battery cells; based on the relationship between the voltage and the state of charge, adjusting the electric quantity of the battery cell and evaluating the capacity of the single battery cell through a series of tests; finally, the evaluated battery cells form a battery pack, the overall performance of the battery pack is detected by calculating the voltage difference and large-current pulse discharge impedance, grouping is completed, and effective evaluation and guarantee of the battery performance are achieved. Compared with the prior art, the method has the advantages that the electric quantity is directly adjusted to the shipment electric quantity requirement by adopting a simple process step after the battery cell formation is finished, the traditional full-full discharge capacity test process step is replaced, and control means such as voltage difference and DCR are introduced in the process are replaced, and on the basis of ensuring the battery consistency and capacity, the battery cell production and manufacturing time is shortened, and the cost is greatly reduced.

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with a reclosing mechanism, which comprises a shell, a circuit breaker handle is rotationally arranged in the shell, an operating rod and at least three gears meshed in sequence are further rotationally arranged in the shell, and the tooth number of each gear is gradually increased in sequence. The two gears located on the two sides are a small gear and a large gear respectively, the number of teeth of the small gear is smaller than the number of teeth of the large gear, the operating rod is fixedly connected with the small gear, and the large gear is in transmission connection with a circuit breaker handle. Speed reduction and torque increase are realized through the gear train, so that the force required to be applied when a user manually operates the handle of the circuit breaker is remarkably reduced, the operation intensity is reduced, the convenience of manual reclosing is improved, and the manual reclosing device is particularly suitable for a large-current circuit breaker or an occasion requiring a relatively large operation torque.

The present invention discloses a front-terminal vertical wide-tab direct-connected bipolar lead-acid battery and an assembly method thereof. Specifically, a new battery structure is proposed, in which the busbars between the single compartments in a conventional battery are removed, and the connection between the single compartments is replaced by a bipolar plate connection method. The plates and separators are stacked horizontally into a battery slot layer by layer in a specific arrangement order, the tabs are widened, and a row of holes are punched in the middle of the tabs of the bipolar plates. After the lamination is completed, metal rods are inserted into the holes to connect the pole groups and tabs in parallel, the pole groups are locked with a pressing plate, and each monomer is sealed by glue injection. The two halves are then bonded into a whole by glue sealing or heat sealing, and the battery is turned into an upright state. The busbars at the turning points are welded, the terminals are welded, and the side covers are sealed to complete the battery assembly. This structure can greatly improve the high-current and high-rate discharge performance of the battery, and effectively solve the high-rate discharge and assembly problems of lead-acid batteries, providing key support for technological innovation, performance breakthroughs and market expansion of lead-acid batteries.

The invention provides an aluminum-doped modified mixed sodium ferric phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of sodium ion batteries. The chemical formula of the aluminum-doped modified mixed sodium ferric phosphate positive electrode material is Na < 4.4 > Fe < 3.4 > Al < 0.1 > (PO4) < 2.5 > (P2O7) / C. The aluminum-doped modified mixed sodium ferric phosphate positive electrode material is obtained by doping Al < 3 + > into NFPP through a sol-gel method and then carrying out high-temperature roasting. When the aluminum-doped modified mixed sodium ferric phosphate positive electrode material is used for a positive electrode of a sodium-ion battery, the initial capacity is high, excellent cycling stability and high rate performance are shown, and the reversible capacity is 133 mAh.g <-1 > under the current density of 0.2 C; under the current density of 20C, the capacity retention ratio is 99% after 500 cycles; and under the high current density of 50C, the capacity retention ratio is still 88% after 2500 cycles.

To provide a biological vector potential generating apparatus that is capable of suppressing the resistance and inductance of a solenoid coil and conducting a large current.SOLUTION: A biological vector potential generating apparatus 1 includes a vector potential coil 10 which is formed by winding a solenoid coil formed by winding conductors 22a to 22d connected in series with core wires 21a to 21d along substrates 30a to 30d with an insulation property. The apparatus further includes an oscillator 36 and amplifiers 31 to 34 that are connected to the oscillator 36 and connected to respective vector potential coils 10a to 10d. The vector potential coils 10a to 10d are stacked such that the central axes of the substrates 30a to 30d are aligned. By supplying current to the vector potential coils 10a to 10d connected to the amplifiers 31 to 34, a vector potential is generated within the internal space.SELECTED DRAWING: Figure 1

The present invention provides a mini travel power conversion socket, including: a face cover, a light guide post, a door spring, a main body, and a bottom cover. This invention provides a mini travel power conversion socket equipped with British plugs, European plugs, and American / Australian rotatable adapter plugs; the socket section is designed with a universal socket panel that can accommodate plugs from multiple countries. The product is compact and miniaturized, with a socket safety protection door set in the middle area between the face cover and the main body. It can support AC plugs / sockets capable of carrying 10 A high current. Inside the hardware socket bracket above, there is an integrated L / N pole socket hardware guide plate that is widened and thickened. Below the hardware connection bracket, there is an integrated plug hardware guide plate, along with a positioning block that can independently extend individual plugs.