134 results about "Charge detection" patented technology

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.

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 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 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 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.

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 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.

The application discloses an electric vehicle charging pile parking space warning system and method based on an STM32 chip, and belongs to the field of automobile parking safety. In view of the situation that electric vehicle charging pile parking spaces are occupied and thus electric vehicles in need of charging cannot be charged, the application designs an electric vehicle charging pile parking space warning system based on an STM32 chip. When a vehicle drives into a parking space, whether the license plate of the parked vehicle is green is recognized by an OPENMV module, and whether the charging pile is in operation is judged by a current sampling circuit; if any of the two conditions is not met, a buzzer continuously issues an alarm, a corresponding warning slogan appears on a display screen, and a GPS module and an ESP8266 communication module are started at the same time to prompt the owner of the vehicle of corresponding information of the nearest parking lot. The application analyzes the situation of the vehicle entering the charging pile parking space from multiple angles through the license plate recognition function and the charging detection function, and the system issues a warning and guides the vehicle to a parking place at the same time, so that the charging pile parking space is fully ensured not to be occupied.

The utility model belongs to the field of balance car, and relates to balance car controlling means, include: controller, brushless motor three -phase drive circuit, single -phase half bridge drive circuit, gyroscope sensor circuit, light control circuit, hall detection circuit, BUCK -BOOST voltage reduction circuit, charge detection circuit and battery detection circuit through electrical connection with controller, controller is used for receiving the information of gyroscope sensing circuit and hall detection circuit, keeps the balance of balance car through the rotation of control motor, brushless motor three -phase drive circuit is used for receiving the control signal of controller, drives brushless motor rotation, single -phase half bridge drive circuit is used for auxiliary drive or brake control, and gyroscope sensor circuit is used for detecting the inclination angle and angular velocity of balance car, and inclination angle and angular velocity are transmitted to controller. The balance stability is improved, the battery management is improved, the power system efficiency is improved, and the additional function is increased.

The embodiment of the application discloses a charging detection circuit and a voltage collection circuit, a battery pack and a power utilization device. The charging detection circuit comprises a first switch unit, a second switch unit and a control unit. The first switch unit is used for being connected with the positive pole of the battery, a first charging end and a second charging end respectively. The second switch unit is used for being connected with the first switch unit, a first power supply and the control unit respectively. When the first switch unit and the second switch unit are closed, the control unit receives a first level signal. In the above manner, the charging safety can be improved while the cost is reduced.

The invention relates to a particle collision device (10) for detecting an electrical charge after a collision of a particle (12) with a collision partner (14), with an acoustic particle holding device (16), a particle preparation device (32) for changing at least one particle property of the particle (12), a collision partner (14) and a charge detector (28) which is configured to detect an electrical charge of the particle (12) and / or the collision partner (14) after a collision of particle (12) and collision partner (14).

A solid-state switch includes a power board and a control board. The power board is operational to switch on / off a high-voltage current, measure the high-voltage current, and sense a high voltage. The control board includes a microcontroller unit and a bus interface circuit. The control board is operational to pass control signals from the microcontroller unit to the power board for switching of the high voltage current, and pass sensed data from the power board to the control board for the high voltage current and the high voltage. The microcontroller unit is operational to calculate a pre-charge detection, an ampere squared seconds detection, an over current detection, an over temperature detection, and a short circuit detection, and report the detections external to the control board via the bus interface circuit.

To provide a battery management system using a small, inexpensive battery station that can be introduced and operated even in small stores. [Solution] The battery has a location detection unit that detects the location of the battery using a location information detection function, and a remaining charge detection unit that detects the remaining charge of the battery. The battery transmits the location information of the battery and remaining charge information indicating the remaining charge to a server using a wireless communication function. The power connector unit controls the power supply for charging the battery based on instructions transmitted from the server, and transmits to the server the location information of the power connector unit and supplied power information indicating the amount of power supplied for charging the battery. The server outputs the battery's location information and remaining charge information in association with each other based on the information transmitted from the battery.

This invention relates to the field of wireless earphone charging detection technology, and discloses a self-detection method, circuit, charging case, and charging system for wireless earphones. The invention detects the status of the wireless earphones. If earphones are detected in the charging case, in-case communication is performed to obtain the earphone's battery level / voltage. Based on the earphone's battery level / voltage, the current charging mode is determined, and the corresponding theoretical charging current is obtained. The theoretical charging current is compared with the actual detected value of the charging current to determine if the charging current is abnormal. If charging current is detected after the charging case is closed, but the earphone status detection result shows no earphones in the case, the in-case detection is deemed abnormal. This invention determines whether the charging case is charging abnormally from three dimensions: in-case detection, in-case communication detection, and charging current detection. It effectively achieves self-detection of charging case charging abnormalities. Combined with executing a charging termination response or other power-consuming operations or prompting the user about charging case abnormalities, it can effectively save power consumption.

This utility model discloses a single-cell lithium battery protection circuit, including a lithium battery charging circuit, a lithium battery protection control circuit, a battery detection circuit, a programming port circuit, a button indicator light interface circuit, a charging detection circuit, a DC brushed motor circuit, and a gyroscope circuit. The lithium battery charging circuit includes connector CN1, diode D2, capacitor C4, resistor R2, resistor R3, capacitor C5, and integrated circuit U2. The lithium battery protection control circuit includes integrated circuit U3, resistor R4, capacitor C6, connector CN3, connector CN2, and resistor R5. This utility model's single-cell lithium battery protection circuit, by setting up a charging detection circuit and a battery detection circuit, evaluates the lifespan of a single-cell lithium battery in real time based on the voltage, current, and internal resistance parameters under different conditions, and provides warnings through the button indicator light interface circuit, facilitating timely maintenance of the single-cell lithium battery and extending its lifespan.

A charge-detection mass spectrometry process includes capturing a time-varying signal, representing a current induced by the oscillatory motion of an ion within a capture region at a detector; processing the time-varying signal to derive a frequency of the oscillatory motion; and generating, based on the amplitude of the time-varying signal and the derived frequency of the oscillatory motion, Selective Temporal Overview of Resonant Ion (STORI) data. Real -Values ​​over time and HISTORY Imag -Represent values ​​over time; regenerate the STORI data based on a variation of the frequency of the oscillation over time and determine a charge state of the ion based on the regenerated STORI data.

The utility model relates to the technical field of battery management, and relates to a battery protection circuit and power supply equipment. The circuit comprises a charging and discharging switch unit, a voltage stabilizing circuit unit, a self-locking circuit unit, a charging detection unit and a battery management unit, the charge-discharge switch unit is arranged between the battery and the load circuit, and the driving end of the charge-discharge switch unit is connected with the battery management unit; the self-locking circuit unit is arranged between the positive electrode of the load circuit and the voltage input end of the voltage stabilizing circuit unit, and the voltage output end of the voltage stabilizing circuit unit is connected with the power supply end of the battery management unit; the charging detection unit is used for feeding back a first level signal to the battery management unit based on the potentials of the negative electrode of the battery and the grounding end of the load circuit, and driving the self-locking circuit unit to enter a self-locking conduction state; the battery management unit is used for comparing the battery electric quantity with a preset value and then outputting a second level signal so as to drive the self-locking circuit unit to enter a turn-off state. The service lives of the battery and the applied power supply equipment can be prolonged, and potential safety hazards are reduced.

The utility model provides a charge detection optimized and improved ash bucket anti-blocking heat-tracing-free system, which comprises an ash bucket, a special nano ceramic material coating coated on the inner wall of the ash bucket, a fluidization air pipeline arranged at a position close to the bottom of the ash bucket, an anti-blocking device arranged at an inlet of the fluidization air pipeline, and a charge quantity detection sensor group arranged on the inner wall of the ash bucket, the charge quantity detection sensor group is electrically connected with the distributed control system, and the outer wall of the ash bucket is provided with a blockage clearing device. The system provided by the utility model eliminates detection dead angles, the sensors collect data in real time through the distributed control system, output of the anti-blocking device is dynamically adjusted, the dust dispersing effect is improved, and the system has the advantages of being comprehensive in detection, accurate in control, low in energy consumption, long in service life and the like.

The invention discloses a two-wheeled vehicle illegal charging detection method and system based on mode recognition. The method comprises the steps of determining a charging mode of a to-be-detected two-wheeled vehicle according to positioning information and basic charging data in battery end charging data; extracting a plurality of output frequency domain energy characteristics of a charger corresponding to the to-be-detected two-wheeled vehicle based on the charging data of the charging end; generating a charging feature vector of the charger based on the plurality of output frequency domain energy features, and calculating a matching degree between the charging feature vector and each candidate charger model feature vector in a preset charger model feature library; acquiring historical charging time sequence distribution characteristics of the to-be-detected two-wheeled vehicle, determining current charging time sequence distribution characteristics of the to-be-detected two-wheeled vehicle according to battery state data in the battery end charging data, and determining an illegal charging detection result of the to-be-detected two-wheeled vehicle based on the matching degree, the historical charging time sequence distribution characteristics and the current charging time sequence distribution characteristics, the comprehensiveness of a detection mode and the accuracy of a detection result can be improved.

The invention provides a power battery charging detection control method and system and a controller, and relates to the technical field of power battery charging detection, the method can configure exclusive risk detection matrixes for different types of power batteries, the threshold parameters in the risk detection matrixes can be flexibly configured and adjusted based on the attribute parameters of the batteries, and the risk detection accuracy is improved. The applicability and the flexibility of a power battery risk detection scene are improved; besides, the method not only can detect the charging process of the power battery in real time, but also can realize prospective risk identification based on the real-time temperature data, thereby further improving the accuracy of the charging risk detection of the power battery.