223 results about "Charge detection" patented technology

The invention belongs to the technical field of charging detection, and particularly relates to a charging pile extreme environment test method based on composite stress simulation, a terminal and a storage medium, and the method comprises the steps: inputting an identifier corresponding to a target test scene through a human-computer interaction interface of a test cabin, and executing a query operation based on the input identifier, retrieving a preset parameter combination from a preset scenarized stress library by using the mapping function; in a closed test cabin, environment parameter data are collected in real time through a distributed sensor array and fed back to a central controller, and the central controller drives an execution component to cooperatively regulate and control parameters such as temperature and humidity, so that the environment parameters are stabilized in a preset range; a sequential stress scheme is generated based on a pre-stored dynamic loading algorithm, an execution component is controlled to realize stress superposition or stress alternation, and a charging load is synchronously adjusted to simulate a composite stress effect under an actual working condition; simulation of multi-factor combined stress and dynamic loading is realized, an actual use fault can be found in advance, and the matching degree of a test result and a real environment is remarkably improved.

The invention discloses a battery state-of-charge detection method based on deep learning and ultrasonic feature fusion. The method comprises the following steps: collecting and preprocessing battery ultrasonic signals and battery electrical parameters; extracting an ultrasonic amplitude; extracting and fusing the characteristics of the battery voltage, the surface temperature, the ultrasonic amplitude and the phase difference; the method comprises the following steps of: optimizing parameter values of a BiTCN-BiLSTM-Multi-Head Attention network on the basis of a WAA weighted average optimization algorithm, extracting basic characteristics related to the SOC of the battery in a characteristic matrix on the basis of a bidirectional time convolution network BiTCN, extracting long-term information related to the SOC of the battery in the basic characteristics on the basis of a BiLSTM network, extracting important characteristics related to the SOC of the battery in the long-term information on the basis of a Multi-Head Attention network, and calculating the SOC of the battery according to the extracted important characteristics. And outputting a predicted value of the SOC of the battery through the full connection layer. According to the invention, the estimation precision of the battery SOC can be improved.

The invention relates to the technical field of live detection, in particular to a power distribution gap lightning arrester live detection result compensation algorithm, which comprises the following steps: acquiring a voltage signal and dividing a period section, extracting waveform characteristics to generate a mark set, identifying trend reversal to construct a sudden change section list, analyzing intersection point spacing to form an abnormal set, and calculating a power distribution gap lightning arrester live detection result. And tracking trend deviation to determine correction data, mapping a reference path to reconstruct a reference baseline, and completing conduction state correction recording. According to the method, the detection data of the operation state of the power distribution gap lightning arrester is processed, waveform segmentation marks of a continuous period are constructed, a reversal trend path and slope abrupt change characteristics are combined, potential interference is identified, an abnormal fluctuation area is formed, and a voltage recovery deviation trend is constructed and analyzed through a front window and a trend line segment; and the offset starting and ending points are positioned and the reference path is corrected, so that the reliability of detection data, the accuracy of state judgment and the adaptability of operation conditions are effectively improved.

The invention relates to the field of power grid power load detection, in particular to a power grid power load real-time detection method and system. The method comprises the following steps: acquiring load values of a power grid after preprocessing, constructing a load sequence, and labeling each load value; decomposing the load sequence based on VMD to obtain a plurality of modal components, classifying frequency values in any modal component into a normal class and an abnormal class according to labels, and calculating a first offset mean value of the normal class and a second offset mean value of the abnormal class; and training a preset network based on the calculated importance, inputting frequency values of a plurality of modal components of the real-time load value into the correspondingly trained preset network, outputting sub-probabilities, integrating all the sub-probabilities to obtain a state probability, and completing detection. According to the technical scheme, the precision of the charge detection result can be improved, and a guarantee is provided for safe operation of a power grid.

The invention relates to the technical field of battery replacement cabinet charging detection, and provides a charging detection method and system for batteries of a battery replacement cabinet. The method comprises the following steps: setting initial parameters according to layout information of a charging bin of a battery changing cabinet; determining a candidate strategy based on the initial parameters in combination with voltage overcharge protection and current overcurrent protection conditions; based on a candidate strategy, configuring a first regulation and control vector in a gain space in a stepped manner by direct-current voltage, and configuring a second regulation and control vector in a digital space in a stepped manner by a pulse width duty ratio; establishing a charging strategy search space through the two types of regulation and control vectors; and performing Pareto screening in the space to obtain a service life, efficiency and safety performance non-dominated solution set, and determining an optimal strategy, so as to solve the technical problem that safety, charging efficiency and cycle life optimization are difficult to consider in the charging process of the battery of the battery changing cabinet, and achieve the purposes of constructing a charging strategy search space through a multi-dimensional regulation and control vector and performing Pareto screening to obtain a charging strategy. The technical effects of prolonging the charging and discharging service life, improving the charging efficiency and improving the safety performance are achieved.

The invention provides a lithium battery state-of-charge rapid detection method, and belongs to the technical field of lithium battery detection.The lithium battery state-of-charge rapid detection method comprises the steps that the surface temperature and the initial end voltage of a to-be-detected lithium battery are collected, and the internal resistance growth rate and the capacity fading rate are obtained through a pulse discharge test to evaluate the health state grade; carrying out impedance measurement on the characteristic frequency points to obtain impedance real part and imaginary part data to form a characteristic frequency impedance vector, extracting a statistical moment characteristic vector, inputting a battery state topology reasoning model to output a primary charge state estimation value and local area charge state distribution, extracting auxiliary characteristics in a low-resolution interval to carry out dynamic correction, and judging whether to increase the measurement frequency points according to the confidence interval width. The method solves the technical problems that the lithium battery state-of-charge detection is insufficient in estimation precision and cannot quantify the uncertainty when facing health state degradation and a low-resolution interval.

The present application relates to a kind of new energy vehicle operation safety detection system and charging detection method, it is related to new energy vehicle detection technical field, solve the technical problem of small use range of new energy vehicle operation safety detection equipment in prior art.The new energy vehicle operation safety detection system includes: solar module, battery module, inverter, charging module, control system, direct current charging gun, communication module, charging detection module, display module and 220V power module.The new energy vehicle operation safety detection system of the present application uses high-power battery pack as power supply, and can detect the safety of power storage battery, drive motor, electric control system and electrical safety of new energy vehicle, compared with the prior art using 380v industrial power grid as power supply, since there is no grid restriction, increase the use range and flexibility of new energy vehicle operation safety detection equipment.

This invention discloses a live-line detection device and method for partial discharge in GIS (Gas Insulation System), relating to the field of live-line detection of power equipment. The equivalent capacitance between the primary and secondary windings of a current transformer coil is used as a pulse signal coupling channel. Two sets of pulse current signals within the high-voltage conductor of the GIS are acquired through these two pulse signal coupling channels. Then, the partial discharge voltage signal of a specified frequency is extracted through a pulse partial discharge detection circuit. The two extracted pulse signals are output to a differential mode comparison and acquisition module. This module compares the pulse signals input from the two channels, effectively eliminating interference signals. This invention simultaneously solves two problems in GIS live-line partial discharge pulse detection: pulse coupling and high-voltage side partial discharge interference during live operation. It achieves accurate detection of partial discharge during GIS operation, ensuring the safe and stable operation of GIS electrical equipment.

The utility model discloses a voltage regulation circuit for photovoltaic power generation, which relates to the technical field of photovoltaic power generation and comprises a photovoltaic module for photoelectric conversion; the voltage regulation module is used for voltage stabilization regulation; the output control module is used for filtering and output superposition control; the charging and discharging module is used for controlling transmission of electric energy and controlling energy storage and discharging work of the energy storage module; the boost control module is used for carrying out full charge detection on the energy storage module and controlling the charge and discharge module to carry out discharge control; and the output module is used for receiving electric energy. The voltage regulation circuit for photovoltaic power generation can carry out voltage stabilization regulation, when the voltage regulation module stops power supply, the energy storage module carries out standby power supply, power supply requirements are met, power supply efficiency is improved, and when voltage boosting is needed and the energy storage module is fully charged, superposition processing is carried out in cooperation with electric energy voltage output by the output control module and the voltage regulation module. Therefore, required electric energy is provided for the output module, and the power supply voltage range is improved.

A power storage device is provided with: a first semiconductor switch (55a) and a second semiconductor switch (55b) provided in series on a power line (53b) between a power storage element (3) and a negative terminal (52); an OFF control switch (Q2) connected to the first and second semiconductor switches (55a, 55b) and configured to simultaneously turn off the first and second semiconductor switches (55a, 55b) when the management means detects an abnormality in the power storage element (3); and an external charging detection unit (56a) that detects that the positive terminal (51) and the negative terminal (52) are connected to an external power supply (80), and simultaneously turns on the first and second semiconductor switches (55a, 55b).

The invention relates to the technical field of thermal degradation monitoring, in particular to an electrical equipment insulating material thermal degradation monitoring and early warning method and system based on multi-source data, and the method mainly comprises the steps: outputting a first monitoring node with a risk at present through a thermal degradation early warning model based on current target data, and detecting a target loop with abnormal current based on the residual electric quantity, acquiring a second monitoring node on the target loop, and judging whether the target gas types of the target monitoring node all belong to the standard gas type or not. According to the method, the possibility of false alarm of the current detection point is reduced by analyzing the gas possibly volatilized by the current monitoring node, and all the current monitoring nodes are evaluated based on the obtained sorting result and the early warning value to obtain a processing sequence for a worker to refer to; therefore, more serious accidents caused by the fact that emergency monitoring nodes are not processed preferentially can be avoided as much as possible.

The application discloses a GIS insulator partial discharge charge on-line detection method and system, and relates to the technical field of charge detection.The method comprises the following steps: according to a GIS simulation model, simulating the electric field distribution of charge generation in the partial discharge process, determining the performance index of the required electric field sensing probe, and preparing the electric field sensing probe; according to an epoxy resin model, obtaining the charge density, the charge distribution range and the electric field signal collected by the electric field sensing probe under different voltage pulses, and constructing a test data set; according to the GIS simulation model, obtaining the electric field signal under different charge densities and different charge distribution radii, and constructing a training data set; training a neural network model according to the training data set, and correcting according to the test data set; and collecting the partial discharge electric field signal by using the electric field sensing probe array arranged on the outer wall of the GIS insulator, and obtaining the charge density and the charge distribution range on the surface of the insulator by using the neural network. Non-invasive and non-contact on-line measurement is realized.

The invention relates to a charging protection circuit, a charging detection method and device, electronic equipment and a medium, and the charging protection circuit comprises a control circuit which is used for being coupled with a plurality of functional terminals of the electronic equipment, and is used for detecting whether the impedance between the functional terminals is abnormal or not, and each functional terminal is used for being coupled with charging equipment; the first end of the first pull-down circuit is coupled between the first end of the control circuit and a communication terminal in the function terminals, the second end of the first pull-down circuit is used for being coupled with a grounding end, the control end of the first pull-down circuit is coupled with the second end of the control circuit, and the first pull-down circuit is used for enabling the control circuit to communicate with charging equipment; the first end of the second pull-down circuit is coupled between the first end of the control circuit and the communication terminal, the second end of the second pull-down circuit is used for being coupled with the grounding end, the control end of the second pull-down circuit is coupled with the third end of the control circuit, and the second pull-down circuit is used for enabling the charging equipment to stop outputting electric energy. Through the second pull-down circuit, the charging equipment can stop outputting electric energy to protect the electronic equipment, so that the risk that the electronic equipment is damaged is reduced.

A charge detection mass spectrometer (CDMS) comprises an electrostatic sector field ion trap 40, an inductive image charge detector 400 and a fragmentation device. The electrostatic sector field ion t

The embodiment of the application discloses a parameter acquisition method of an oscillation waveform detection system, relates to the technical field of power system control, and accurately acquires the equivalent resistance value, the equivalent inductance value and the equivalent distributed capacitance value of a winding of a transformer to be measured, the output voltage of a high-voltage direct-current power supply, the maximum input voltage of a data acquisition module, the maximum charging current value allowed by a charging detection loop and the like, and based on the indexes, the first capacitance value of a parallel capacitor, the second capacitance value of a voltage division capacitor, the third capacitance value of a measurement capacitor and the resistance range of a current limiting resistor in the oscillation waveform detection system are acquired, the uncertainty caused by empirical design is avoided, the quality of generated oscillation waveforms is ensured to be stable and controllable, consistent and reliable detection results on transformers of different capacities and voltage grades are ensured, and the accuracy and universality of the oscillation wave detection method in practical application are improved.

The utility model provides a battery capacity control circuit and a battery capacity control device, the battery capacity control circuit comprises a power supply circuit, a detection interface, a charging detection circuit, a charging control circuit, a discharging detection circuit, a discharging control circuit and a discharging circuit, the input end of the charging detection circuit is electrically connected with the battery discharging terminal of the detection interface; the output end of the charging detection circuit is electrically connected with the control end of the charging control circuit, the power input end of the charging control circuit is electrically connected with the power supply circuit, the power output end of the charging control circuit is electrically connected with the battery charging terminal of the detection interface, and the input end of the discharging detection circuit is electrically connected with the battery discharging terminal. The output end of the discharge detection circuit is electrically connected with the control end of the discharge control circuit, the input end of the discharge control circuit is electrically connected with the battery discharge terminal, and the output end of the discharge control circuit is electrically connected with the discharge circuit. The battery capacity control circuit provided by the utility model can be used for conveniently controlling the battery capacity of an electronic product.

The invention discloses a suspension type charging device and an in-situ detection system thereof, and relates to the technical field of charging piles, the suspension type charging device comprises a charging pile body, a detection robot and a suspension bag; the detection robot is arranged at the bottom of the charging pile body in a detachable connection mode and used for walking on the seabed and conducting in-situ detection. The suspension bag is of an annular bag body structure and is used for providing buoyancy to enable the charging pile body to float on the sea surface or suspend at the water bottom; the charging pile body is fixed to the middle of the suspension bag and used for charging the detection robot. When the detection robot sinks to the seabed for in-situ detection, the detection robot is electrically connected with the charging pile body through the charging wire for charging; the technical effects that buoyancy adjustment is accurate, flexibility is improved, offshore attitude stability is improved, functions are diversified, and suspension stability is improved during offshore charging can be achieved.

The invention discloses a new energy automobile operation safety detection system and detection method, belongs to the field of new energy automobile detection, and aims to solve the problem of incomplete new energy automobile operation safety detection items in the prior art. The new energy automobile operation safety detection system comprises an OBD reading module, an electrical detection module, a direct current charging module, a charging detection module, a battery pack sealing detection module, an industrial personal computer, a host and a cloud server. According to the new energy vehicle operation safety detection system and detection method, the battery pack sealing detection module is arranged, the thermal imager and the convolutional neural network are utilized to perform sealing detection on the battery pack on the vehicle, the leakage type can be identified, and the detection accuracy is improved by utilizing an infrared image processing technology. The influence of a complex structure and a complex detection working condition is reduced, the recognition accuracy of the convolutional neural network model is improved, and then the battery pack sealing detection precision is improved.

The utility model discloses a kind of charging pile online detection system based on big data, it is related to charging detection technical field, solve the technical problem that supervisory department is used for charging equipment charging electric energy measurement online detection equipment investment cost is too high.The utility model includes output voltage sensor, shunt resistance voltage sensor, shunt resistance temperature sensor, charging pile ammeter, controller, controller is connected with output voltage sensor, shunt resistance voltage sensor, shunt resistance temperature sensor and charging pile ammeter respectively.The utility model utilizes the resistance shunt mode of charging pile itself to detect the voltage on shunt resistance, in combination with temperature and power and other factors, again using big data algorithm calibration, both reduce cost, and can reach similar effect.

The invention provides a multi-mode self-adaptive charging energy efficiency collaborative optimization system and a dynamic control method. The multi-mode self-adaptive charging energy efficiency collaborative optimization system comprises a charging general control circuit unit, a charging detection circuit unit connected with the charging general control circuit unit, a charging current output control unit and a multi-mode sensing unit used for monitoring SOC, SOH, temperature and internal resistance parameters of a battery in real time. The multi-mode sensing unit comprises a battery state sensing unit, an environment sensing unit used for collecting environment temperature, humidity and electromagnetic interference data, a user demand sensing unit used for analyzing charging mode preference input by a user, and a power grid interaction unit used for obtaining real-time electricity price, load rate and carbon emission data. The charging master control circuit unit comprises a single-chip microcomputer U1, a charging positive electrode circuit connected with a PWMOUT contact of the single-chip microcomputer U1 and a charging negative electrode circuit connected with an ADCN contact of the single-chip microcomputer U1, the charging stability of the whole circuit can be well improved in practical application, and therefore the charging efficiency is improved.

This utility model discloses a power supply abnormality alarm device, comprising: a power supply module for outputting stable 5V and 12V voltages; a charging detection module configured to connect to an external power source and charge a lithium battery, switching to lithium battery power supply when the external power supply is abnormal; a main control unit configured to trigger alarm actions based on voltage status; an audible and visual alarm module indicating power supply status through sound signals and light color changes; a wireless communication module transmitting power outage alarm information including location information to a designated terminal via wireless transmission when power supply is abnormal; and a testing and maintenance module including test pads connected to each operating voltage and status indicator LEDs for voltage visualization monitoring and maintenance, and also including a reserved interface module. This utility model belongs to the field of power supply alarm technology, specifically providing a solution to the problems of delayed fault response, low troubleshooting efficiency, and insufficient scalability in existing technologies.

The invention discloses a charging detection device for a battery driving module, and relates to the technical field of battery charging detection, the charging detection device comprises a main control circuit board, the main control circuit board internally comprises a multi-path detection unit, a diagnosis unit and a control unit, and the multi-path detection unit is connected to each single battery of the battery module through a wire harness. According to the invention, the multi-path detection unit collects the voltage, the total loop current and the temperature signal of each monomer of the battery module in real time, and the diagnosis unit executes a multi-time scale extended Kalman filtering algorithm based on the dynamic working condition data, and synchronously calculates two key parameters of the internal resistance and the capacity fading rate of the battery. And finally, the control unit dynamically adjusts the charging parameters of the charging equipment according to the diagnosis result and triggers equalization control, so that accurate diagnosis and self-adaptive regulation and control of the battery state under a complex working condition can be realized, battery attenuation is effectively delayed, the charging safety and the consistency of the battery pack are improved, and the service life of the battery module is remarkably prolonged.

The application discloses a gas controller backup battery charging detection device and a detection method, and relates to the technical field of charging detection. In the device, a charger circuit is used for charging the backup battery and detecting whether the backup battery is in a charging loop; an analog battery circuit is used for switching between analog battery circuit charging and backup battery charging; the analog battery circuit is also used for monitoring whether the charging current of the analog battery circuit is within a normal range; a charging current monitoring circuit is used for monitoring the current value of the charging loop between the backup battery and the charger circuit, and sending the current value to a microcontroller circuit; and a charging voltage monitoring circuit is used for monitoring the voltage value of the charging loop between the backup battery and the charger circuit, and sending the voltage value to the microcontroller circuit. The application realizes backup battery charging detection of the gas controller through the joint action of multiple circuits and reasonable circuit control, and frequent switching of the charger for detection is not needed.

The invention discloses a dynamic material flow monitoring method and system for cut tobaccos, and the method comprises the steps: uniformly arranging measuring electrodes on the inner wall of a cut tobacco conveying pipeline for secondary winnowing, so as to construct an electrode array for electrostatic charge detection; forming a polar plate corresponding to the capacitor by the measuring electrode and a set shielding electrode; the capacitance value of the capacitor is obtained through the electrostatic charges of the pipe wall, and the capacitance value correspondingly changes along with the distribution concentration of tobacco shreds in the tobacco shred conveying pipeline; obtaining the capacitance value change of the capacitor in real time, and obtaining a distribution image of tobacco shreds in the tobacco shred conveying pipeline by using an image reconstruction algorithm; and calculating the volume ratio of the tobacco shreds according to the distribution image, and further calculating the tobacco shred flow and the tobacco shred blanking mass according to the volume ratio and the tobacco shred flow velocity. According to the invention, the accuracy and convenience of dynamic flow monitoring of the secondary winnowing tobacco shreds can be improved.

The invention provides a wireless charging detection method, a vehicle, an ultra wide band radar and electronic equipment. According to the specific implementation scheme, in response to the situation that a vehicle is located at the position corresponding to a wireless charging panel, the ultra-wideband radar periodically detects a preset area corresponding to the wireless charging panel; in response to the condition that the ultra-wideband radar detects that a target object exists in the preset area, the ultra-wideband radar determines a target echo corresponding to the target object; the ultra wide band radar determines the object type of the target object according to the target echo; and the ultra wide band radar sends a corresponding charging adjustment instruction to the vehicle according to the object type, so that the vehicle stops charging or adjusts the charging power. According to the scheme disclosed by the invention, the robustness of foreign matter and living body detection during wireless charging of the vehicle can be improved, and the problem of influence of external environment change on foreign matter and living body detection of wireless charging is solved.

A process for charge detection mass spectrometry includes: acquiring a time-varying signal representative of a current induced on a detector by oscillatory motion of ions within a trapping region; processing the time-varying signal to derive a frequency of the oscillating motion; generating resonant ion selective time overview (STORI) data representing a relationship of STORIreal value to time and a relationship of STORIimag value to time based on the amplitude of the time-varying signal and the derived frequency of the oscillatory motion; regenerating STORI data based on a change in the frequency of the oscillatory motion over time; and determining a state of charge of the ion based on the regenerated STORI data.

An example circuit, method, and electronic device configured to filter pulses below a minimum threshold pulse width and provide delays that exhibit low variance to changes in temperature, voltage, and technology processes, are provided. The example circuit includes a first flip / flop, a second flip / flop, and a charge detector. The first flip / flop generates a first out signal and a first inverse signal based on an input signal and a first clocking signal. The second flip / flop generates an output signal and a second out signal based on the first out signal, the first inverse signal, and a second clocking signal, wherein the second clocking signal is an inverse of the first clocking signal. The charge detector circuit includes a charging capacitor to generate a charge signal based on a change in the input signal, such that pulses are filtered based on a capacitance value of the charging capacitor and a reference voltage.

The invention relates to the technical field of power detection, and particularly discloses a high-voltage circuit breaker time relay field calibration method, system and device and a storage medium. In order to solve the problems that in the prior art, wires need to be disassembled and connected, and the measurement precision is low, a detection mode is automatically switched by detecting the electrification state of a relay port: in the electrification mode, a double-contact relay is controlled to keep a first path, and alternating-current and direct-current signals are converted through a bridge rectifier unit; in the non-charged mode, the second path is switched to form a detection loop; a signal conditioning circuit is used for collecting the contact state, a level jump signal is transmitted through optoelectronic isolation, and finally an action time parameter is calculated. The system comprises a state judgment module, an access control module, a signal processing module and a time sequence calculation module. The equipment integrates a programmable power supply unit and a man-machine interaction unit. According to the invention, disconnection-free live detection is realized, AC / DC relay testing is compatible, and the detection efficiency and safety are improved by adopting a modular design.

The invention relates to the technical field of electrical equipment testing, and particularly provides a space charge detection device and method based on optical measurement. The space charge detection device based on optical measurement comprises a sensing acquisition array which is uniformly distributed around detected equipment in the circumferential direction, full-surrounding detection of space charges is achieved, collaborative design of four optical detection technologies is adopted, multi-dimensional detection of the space charges is achieved through the complementary effect of Raman scattering, the photoacoustic effect, LIBS and the photoelectric effect, and the detection accuracy of the space charges is improved. The detection limitation of a single technology is made up; according to the space charge detection method based on optical measurement, a space-time synchronization-weight distribution-feature fusion algorithm and a signal-to-noise ratio-based adaptive weight distribution fusion algorithm are adopted, space-time synchronization calibration and Kalman filtering are combined, the problems of space-time inconsistency and random errors of multi-source data are solved, and the precision of data fusion is improved.

The application discloses a capacitor measurement circuit and a capacitor measurement method, and belongs to the field of semiconductors. The capacitor measurement circuit can accurately measure the junction capacitance of a semiconductor detector (a device to be measured) in real time and on line while applying thousands of volts of direct-current working voltage to the semiconductor detector by coupling an alternating-current test signal in a high-voltage bias loop and directly responding to charge changes by using a detection module, so that the measurement result truly reflects the capacitance characteristics of the device under the actual high-voltage working state. The entire circuit adopts a topology combining alternating-current injection and charge detection, effectively isolates the influence of high-voltage direct current on the precision detection circuit, guarantees high measurement precision and a signal-to-noise ratio, has good electrical safety, and is also compatible with the capacitor measurement demand under conventional low-voltage or zero-bias conditions, thereby improving the universality and application flexibility of the circuit.