41 results about "Voltameter" patented technology

The invention discloses a high-thermal-conductivity ultrathin silica gel gasket and a preparation method thereof, and belongs to the technical field of thermal conductive materials. The high-heat-conductivity ultrathin silica gel gasket is prepared from silicon rubber, vinyl silicone oil, MQ silicon resin, a coupling agent, dimethyl silicone oil, hydrogen-containing silicone oil, an inhibitor, a catalyst and heat-conducting powder according to specific mass parts, wherein the heat-conducting powder is prepared by compounding sphere-like aluminum oxide and multi-particle-size spherical aluminum oxide; by accurately controlling the performance parameters of each component and the particle size distribution and mass ratio of the heat-conducting powder, collaborative optimization of the heat-conducting property, the processing property and the structural stability is realized. The heat conductivity coefficient of the prepared high-heat-conductivity ultrathin silica gel gasket is larger than or equal to 5.0 W / (m.K), the thickness can be as low as 0.25 mm, the heat resistance is smaller than or equal to 0.21 K.in / W, the breakdown voltage is larger than or equal to 3.7 kV, needle holes and stripping phenomena do not exist in the surface, and the high-heat-conductivity ultrathin silica gel gasket meets the heat dissipation requirement of precise electronic equipment. The preparation method is simple in process, high in controllability and suitable for industrial production.

The invention relates to the technical field of aerosol generating devices, and discloses a voltameter data processing method and an aerosol generating device. The aerosol generating device comprises a battery cell, a voltameter and a controller, the voltameter data processing method comprises the steps of determining whether to update a target learning data set according to a preset time rule, a current learning data set and the target learning data set stored in a flash memory of the controller, and when it is determined that the target learning data set is updated, determining whether the target learning data set is updated. Updating the target learning data set to be consistent with the current learning data set; and after the voltameter is reinitialized, according to a target learning data set stored in the flash memory of the controller and the current learning data set, determining whether to update the current learning data set, and when it is determined that the current learning data set is updated, updating the current learning data to be consistent with the learning data set. Therefore, the influence that the voltameter is powered down or enters an ultra-low power consumption mode can be avoided, and the accuracy of the remaining power percentage displayed by the aerosol generation device is improved.

The present application discloses a battery system and a power supply system. The battery system comprises a processing circuit, a constant current source and a plurality of battery packs; each battery pack comprises at least one sampling resistor; the sampling resistors of all the battery packs are connected in series across the constant current source; voltages across the constant current source can directly reflect corresponding voltage protection values when different numbers of battery packs are connected in series; the processing circuit is connected across the constant current source, and uses the voltage across the constant current source as a voltage protection value to compare same with a voltage after the plurality of battery packs are connected in series. According to the battery system provided by the present application, the voltage protection value is directly represented by means of the voltage across the constant current source, and there is no need for an installation worker to open a switch box on site to adjust the voltage protection value by means of a DIP switch, thereby achieving convenience and rapidness, improving the safety, and reducing personnel costs.

The application relates to the field of batteries, in particular to a battery SOC estimation method, an estimation system and a power battery system. The battery SOC estimation method comprises the following steps: A, obtaining a display SOC value by using an ampere-hour integration method; B, detecting a dynamic voltage of a battery charging system, and obtaining a corrected SOC value in a dynamic voltage / SOC matrix table according to the dynamic voltage; and C, comparing the display SOC value with the corrected SOC value, and determining a display mode of the display SOC value according to a comparison result. Compared with the prior art, the battery SOC estimation method provided by the application can obtain a corrected SOC value in a dynamic voltage / SOC table according to a dynamic voltage of a battery system during charging, compare the corrected SOC value with a display SOC value obtained by using an ampere-hour integration method, determine a final display SOC value according to a comparison result, and thus can ensure that the residual capacity of the battery can be accurately fed back before the vehicle starts discharging after being charged, which is a great progress in the field.

The invention discloses an FCA-UKF lithium battery pack SOC estimation method comprising the following steps: providing a dynamic weighted voltage characterization method to construct a virtual unit model of a lithium battery pack, and through the virtual unit model, significantly reducing the calculated amount, adapting to battery inconsistency, and ensuring efficient and accurate SOC estimation; selecting an equivalent circuit model, and establishing a system state space equation; on the basis of HPPC working condition test data, model parameters are identified in combination with a least square method with a forgetting factor; and estimating the SOC of the whole battery pack in combination with a virtual unit model. According to the method, a fuzzy covariance adaptive unscented Kalman filter (FCA-UKF) algorithm is provided, the process noise covariance is adaptively adjusted on the basis of the unscented Kalman filter algorithm, the difference value between the actual variance and the theoretical variance of the measured noise is monitored in real time in combination with a fuzzy controller, real-time online adjustment of a measured noise covariance matrix is achieved, and the real-time online adjustment of the measured noise covariance matrix is achieved. The accuracy and stability of state estimation can be improved while the filtering precision is ensured.

The application relates to a low-voltage distribution network topology identification method based on weighted Mahalanobis distance and granularity clustering, which comprises the following steps: collecting the voltage sequence of each user's electric meter box under each block as a sample point; using an improved weighted Mahalanobis distance to calculate the weighted Mahalanobis distance between each voltage meter sequence; calculating the density between the sample points according to the weighted Mahalanobis distance between two voltage meter sequences; for each sample point, constantly obtaining the sample point closest to the current sample point and having increased density, clustering, determining the clustering center, and discriminating the block to which the user belongs according to the clustering result. Compared with the prior art, the application is simple to realize, only needs to measure the voltage data of the smart electric meter, does not need to increase additional measuring equipment in the system, and the calculation result of the weighted Mahalanobis distance is more relevant and can better reflect the similarity relationship between the data.

This invention relates to a method and apparatus for measuring the voltage of a secondary battery. Existing methods for assessing the state of charge (SOC) of a battery can only be performed when the battery is not in operation, and therefore cannot reflect the battery's true SOC. This method involves connecting the positive and negative electrodes of the secondary battery to a first voltmeter to measure a first voltage; placing a positive-side voltage measuring probe on the positive electrode side of the secondary battery, and symmetrically, placing a negative-side voltage measuring probe on the negative electrode side; connecting the positive and negative-side voltage measuring probes to a second voltmeter to measure a second voltage; and taking the average of the first and second voltages as the measured voltage value of the secondary battery for assessing its remaining capacity. This invention enables rapid, accurate, and effective measurement of the secondary battery voltage while it is in operation, thereby allowing for more precise management of the energy storage of the secondary battery.

A frame is installed on the periphery of a light-transmitting plate, a group of opposite side edges of the frame are provided with two groups of translation grooves with corresponding heights, the two groups of translation grooves are arranged above the light-transmitting plate and are arranged up and down, and two ends of two clamping rods are respectively connected in the group of translation grooves at the lower side. The probe plate is connected in one group of translation grooves on the upper side, an ampere meter terminal and a voltmeter terminal are led out from the probe plate, the other group of opposite side edges of the frame are respectively connected with a support column on the base through a shaft, and a handle is arranged at the outer end of the shaft. When the positive electrode and the negative electrode are both designed on the same face of the battery and on the two faces of the battery respectively, compatible fixation is conducted on the solar battery during IV testing, the battery is fixed through the movable clamping rod, the probe plate is installed on the movable moving rod, flexible adjustment can be achieved, the solar battery fixing device is particularly suitable for fixing small-size batteries, the batteries are firmly fixed, and the working efficiency is improved. And the overturning of the test bench does not affect the clamping and fixing of the battery.

A lifting mechanism is installed on a base, a cooling device is arranged above the lifting mechanism and fixed with the lifting mechanism, a carrying table comprises an insulating plate on the lower layer and a conductive plate on the upper layer, the carrying table is arranged above the cooling device and fixed with the cooling device, and a test board is located above the carrying table; a conductive flat cable of the test board is located on the lower surface of the light-transmitting plate, an ampere meter terminal and a voltmeter terminal are led out from the conductive flat cable, the battery is placed on the conductive plate with the light-receiving surface facing upwards, all grid lines on the back surface of the battery are in contact conduction with the conductive plate, the lifting mechanism ascends, and the grid lines on the light-receiving surface of the battery are in contact conduction with the conductive flat cable; and the electric control cabinet is provided with a temperature controller and a temperature control switch associated with the cooling device, a lifting switch associated with the lifting mechanism and an associated power supply. When the positive electrode and the negative electrode are respectively designed on the two surfaces of the cell, the device is suitable for compatible fixation of solar cells with different electrode patterns, sizes and thicknesses during IV testing.

The invention relates to the technical field of lithium battery management, in particular to a negative-end high-voltage isolation circuit for voltameter communication, which is applied to a battery pack comprising a battery pack, a voltameter IC (integrated circuit), a protection IC and a negative-end switch MOSFET (metal-oxide-semiconductor field effect transistor) controlled by the protection IC. The control module outputs a control signal according to the level state of the discharge control output end; the high-voltage isolating switch unit is connected in series on a communication line between the communication pin of the voltameter IC and the external communication interface; when the discharge control output end indicates that discharge is allowed, a control signal output by the switch control unit enables the high-voltage isolation switch unit to be conducted; when the discharge control output end indicates to turn off discharge due to protection action, a control signal output by the switch control unit turns off the high-voltage isolation switch unit so as to cut off a communication line and isolate the impact of high voltage generated at the load negative end P-due to turn-off of a discharge switch tube on the voltameter IC.

The application discloses a power battery SOC estimation method based on battery monomer voltage, and the main design concept of the application is that the characteristics of end pressure difference amplification of a battery pack with poor monomer consistency are utilized, the actual SOC maximum and minimum values are estimated based on the maximum and minimum values of the monomer voltage and the rated capacity, and the actual power value in the actual charging and discharging process is estimated by using the weighted summation of the two. Meanwhile, in the process of continuously obtaining the actual power value, the pre-calibrated monomer voltage OCV table is inquired according to the set power interval and the charging and discharging current threshold, so that the actual SOC maximum and minimum values participating in the estimation are corrected in real time, that is, the actual power estimation value is continuously corrected based on the calibrated monomer voltage value in the charging and discharging process, so that the actual SOC of the battery pack can be accurately calculated when the monomers of the battery pack have large differences, and the charging and discharging capacity of the battery pack can be accurately reflected.

An ammeter measures current when a storage battery having a plurality of single batteries connected in series is charged or discharged. A voltmeter measures total voltage of the storage battery. A calculation device calculates dV / dt obtained by differentiating the total voltage with respect to time on the basis of a relationship between the total voltage and charging time or discharging time, separates a characteristic peak obtained by a dV / dt curve into peaks for the respective single batteries, and diagnoses soundness of the storage battery on the basis of the separated peaks.

The utility model relates to the technical field of teaching demonstration appliances, and provides a hydroelectric generation demonstration device for teaching, which comprises a fixed box. The indicating lamp, the ampere meter and the voltmeter are fixedly connected to one side of the front face of the fixed box, a cavity is formed in the fixed box, the upper end of the inner wall of the cavity is rotationally connected with a water turbine, the lower end of one side of the fixed box is fixedly connected with a drainage pipe, and the upper end of the other side of the fixed box is fixedly connected with a generator; the water storage tank is arranged above the fixed tank, and one end of the bottom end of the water storage tank is fixedly connected with a blow-off pipe; the filtering assembly is assembled at the top end of the water storage tank; the height between the bottom end of the blow-off pipe and the water turbine can be changed through the arranged adjusting assembly, the water flow discharge amount is achieved through a valve on the blow-off pipe, then different demonstration of the power generation amount by different water flows and heights can be achieved, and the corresponding teaching demonstration effect is improved.

The utility model provides a traceability device for electric vehicle power battery detection equipment, which belongs to the technical field of traceability of power battery detection equipment and comprises a load module, a voltameter and a voltage / current sampling module. Electric energy released by the electric vehicle power battery detection equipment in the traceability process is consumed through the load module; the voltameter is connected with the charging gun and is used for collecting electric quantity consumed by the load module; the voltage / current sampling module is connected with the charging gun and is used for collecting voltage data and current data transmitted to the load module by the charging gun in the traceability process. According to the utility model, the traceability of the power battery detection equipment of the electric vehicle is realized and the accuracy of the detected quantity value is verified without disassembling the whole vehicle and changing the control strategy, so that the detection data among different power battery detection equipment of the electric vehicle has a unified standard.

The invention discloses an early warning system for damage of materials in a high-temperature furnace or a graphitization furnace. The early warning system is suitable for the high-temperature furnace provided with an opposite-penetrating type graphite heater and a multi-layer carbonaceous heat preservation layer. According to the system, the center temperature of a hearth is obtained through an optical pyrometer arranged outside a furnace body, temperature sensors are arranged in heat preservation layers with different thicknesses to obtain the temperature of each heat preservation layer, current transformers or Rogowski current loops are arranged at the head and the tail of a graphite heater, and a low-voltage alternating-current voltmeter is connected to a heating loop; collecting the temperature in the furnace, the temperature of each insulating layer and the current, voltage and power data of a heater; the method comprises the following steps: establishing a heat preservation characteristic reference curve corresponding to furnace temperature and different heat preservation thicknesses in the initial heating stage of equipment, comparing real-time data with the reference curve in the operation process, distinguishing abnormal short circuit and normal aging of a heat preservation material by combining head and tail current distribution and resistance change of a graphite heater, and evaluating equivalent loss of a graphite piece. The system records multi-dimensional data for a long time through the PLC and the upper computer, predicts the residual life of the thermal insulation material and the heater, and realizes online diagnosis and early warning of the state of the material in the furnace.

The application relates to the technical field of lead-acid battery shell detection devices, and provides a lead-acid battery shell detection mechanism, which comprises a detection seat, a detection assembly is arranged on the detection seat, the detection assembly comprises first probes and second probes, the first probes are electrically connected with a constant-current power supply, the first probes are electrified to welding points, the second probes abut against the welding points and are electrically connected with a voltmeter, and the voltage of the welding points is tested. Based on the mechanism, the welding points after wall penetration welding can be detected, and whether there is lead explosion or impurity residue can be judged.

The utility model discloses a battery module, and belongs to the technical field of batteries, the battery module comprises a battery body, a voltameter, a display screen and a wireless communication device, the voltameter, the display screen and the wireless communication device are installed on the battery body, the voltameter and the display screen are electrically connected with the battery body, and the wireless communication device is electrically connected with the battery body. The voltameter is used for detecting the residual electric quantity of the battery body, the voltameter is in communication connection with the display screen, the display screen is used for displaying the residual electric quantity of the battery body, and the wireless communication device stores parameter information of the battery body. According to the battery module, the problems that the consistency of patterns formed on the surface of the battery is poor and the patterns are easy to abrade along with the increase of the use time because the current battery generally adopts a silk-screen mode, so that a user cannot accurately obtain corresponding information can be solved.

The embodiment of the invention provides an information processing method and electronic equipment, the electronic equipment comprises a first battery, a charging module and a first voltameter, the charging module is used for charging the first battery, and the first voltameter is used for measuring the electric quantity of the first battery; the method comprises the following steps: when the first voltameter detects that the electric quantity of the first battery is fully charged, controlling the charging module to stop charging the first battery; and / or, when the charging module detects that the first battery is fully charged, the first voltameter is controlled to set the electric quantity of the first battery to be fully charged. According to the embodiment of the invention, the problem that the real-time battery electric quantity displayed in the electronic equipment is inconsistent with the battery charging state can be solved, and the user experience is improved.

The present application relates to the field of battery thermal safety performance test, specifically to a kind of energy storage device thermal safety performance test test device, including test box, controller, temperature detector and voltmeter, the controller, temperature detector and voltmeter are sequentially installed from top to bottom in test box front left side, and controller is electrically connected with temperature detector, heater electrically connected with controller is installed in the left and right inner walls of test box, controller controls the start-stop of heater, let heater heat test box, temperature measuring mechanism is installed in the top of test box inner chamber, and fire extinguishing mechanism is installed around the top of test box inner chamber.Effectively solve the technical pain points that existing test device cannot detect battery bulging, test dimension is single, fill the blank of structure failure early warning in battery thermal safety test, provide more comprehensive, rigorous data support for battery thermal safety performance evaluation, and then provide accurate direction for structure optimization and performance improvement of battery.

This invention provides a voltage measuring device for the CPR battery of a WD-32 stability vehicle, relating to the field of CPR battery voltage measurement technology. The device includes a voltmeter installed on an NPR battery for measuring the voltage of the CPR battery; and a pressure monitoring unit connected to the voltmeter for acquiring the CPR battery voltage data from the voltmeter and performing pressure monitoring analysis to generate pressure monitoring result data. This device monitors the CPR battery voltage in real time by installing a voltmeter on the CPR battery, ensuring the normal operation of power supply facilities and equipment related to the CPR battery.

This invention discloses a method and system for optimizing the performance control of solid-state batteries. The method collects real-time voltage, surface temperature, internal stacking pressure, and interfacial impedance spectrum, inputting these data into an electrochemical-mechanical coupling model that includes an interfacial stress tensor field and a dynamic correction factor. It calculates the polarization characteristics and the trend of interfacial porosity changes, generating a dynamic charge rate curve, a dynamic discharge depth limit, and a variable mechanical stacking pressure adjustment target value based on Pareto optimality. The frequency and duty cycle are dynamically adjusted through variable-frequency pulse charging, combined with active stacking pressure adjustment to dynamically compensate for interfacial contact pressure. This invention achieves closed-loop dynamic control of the solid-solid interface, solving the problem of not being able to detect and actively intervene in interface degradation, and significantly improving the cycle life and energy efficiency of solid-state batteries.

The utility model discloses a rapid liquid level measuring device based on a temperature control element. The rapid liquid level measuring device comprises at least one liquid level measuring ruler and a data recording and processing device, the liquid level measuring scale comprises a substrate, at least one thermocouple anode, a thermocouple cathode, a data transmission male port and a horizontal adjusting device, the thermocouple anode and the thermocouple cathode are arranged on the surface of the substrate; the thermocouple anode and the thermocouple cathode are connected with the data transmission male port; the horizontal adjusting device is used for enabling the liquid level measuring ruler to be perpendicular to the measured liquid level. The data recording and processing device is used for recording data measured by the liquid level measurement value and sending the data to the outside at the same time; the data recording and processing device comprises a data transmission female port, a sensitive micro voltmeter, a timing reset button and a heat insulation shell; the data transmission female port is detachably connected with the data transmission male port; a temperature control element is arranged at each joint of the thermocouple anode and the thermocouple cathode; and the temperature control element is electrically connected with the data recording and processing device.

The present invention relates to a battery treatment method, which relates to a method of treating a waste battery, the method comprising: a step of preparing a battery; a step of measuring a voltage of the battery; a step of subjecting the battery to a low-temperature treatment at a temperature below a minimum temperature according to the voltage of the battery; and a step of crushing the battery, the minimum temperature satisfying the following formula 1. The battery treatment method is the minimum temperature satisfying the following formula 1, <Formula 1> Minimum temperature = 21.42857 + (-21.1255) x Voltage + (-0.69264) x Voltage 2 ± 0.5 In the above formula 1, the voltage represents a battery cell reference voltage of the battery.

The invention discloses a power supply voltage adaptation device and heating equipment. The power supply voltage adaptation device comprises a voltage conversion module which reduces a first alternating current power supply voltage input from the outside, rectifies a second alternating current power supply voltage obtained after the voltage reduction into a direct current voltage and outputs the direct current voltage; the voltage sampling module samples the DC voltage output by the voltage conversion module to obtain a sampled voltage; the voltage adaptation module obtains the sampling voltage output by the voltage sampling module, the sampling voltage is adapted to an internally preset global power supply voltmeter to obtain externally input alternating current power supply voltage adapted to the heating equipment, and then the power of the heating equipment is adjusted according to the obtained externally input first alternating current power supply voltage adapted to the heating equipment. Therefore, the heating equipment can automatically adapt to different external power supply voltages, the heating equipment is universal in countries with different power supply voltages in the global range, the national requirements of the countries with different power supply voltages in the global range are met, and the hardware cost of the heating equipment is reduced.

Provided is a battery pack capable of conveniently diagnosing, by itself, the degree of degradation of the internal resistance of a battery. A battery pack includes: a battery; contactors; an AC constant current source supplying an AC constant current with a predetermined frequency to the battery; an AC voltmeter detecting the value of a voltage between a positive electrode and a negative electrode when the AC constant current is supplied to the battery; and a control unit supplying an AC constant current to the battery by controlling the AC constant current source, calculating the internal resistance of the battery on the basis of the value of the voltage detected by the AC voltmeter, and diagnosing the degree of degradation of the battery on the basis of the internal resistance.

The utility model discloses a high-efficiency and energy-saving intelligent regulation and control device for a distribution transformer. A wire inlet port and a wire outlet port are fixedly installed on the outer walls of the two sides of the bin body respectively. The voltage transformation assembly comprises a transformer, and the transformer is fixedly installed on the inner wall of the bin body; a plurality of groups of sliding variable resistance assemblies are arranged, each sliding variable resistance assembly comprises a porcelain cylinder, a resistance wire is wound on the outer wall of the porcelain cylinder, the outer wall of the porcelain cylinder is slidably connected with a shifting fork, the shifting fork is electrically connected with the resistance wire, and the input end and the output end of the resistance wire are electrically connected with a voltmeter. Relates to the technical field of intelligent regulation and control devices of transformers, and can quickly and automatically change the resistance by driving a lead screw through a servo motor to accurately adjust the position of a shifting fork on a porcelain tube resistance wire, ensure that various electric equipment can efficiently operate in a stable voltage environment, and effectively reduce the equipment fault risk caused by voltage fluctuation.

The utility model discloses a nuclear power plant test box calibrator, which comprises a shell and a calibration device arranged in the shell, the calibration device comprises a battery, a light emitting diode, a buzzer and a test box jack which are sequentially connected in series, and the calibration device also comprises a voltmeter which is connected in parallel with two ends of the light emitting diode; the battery is installed in the shell, and the light emitting diode, the buzzer, the test box socket and the voltmeter are all installed on the upper surface of the shell; the test box socket is used for connection of a nuclear power plant test box. By applying the nuclear power plant test box calibrator, the adhesion condition of the button of the nuclear power plant test box can be found in advance, and similar mistaken starting events can be avoided. Reverse installation of the opening and closing button can be found in advance.

The present disclosure relates to a device and a method for monitoring turn-off capability. The device is suitable for monitoring the turn-off capability of an electrical consumer connected to a first current path, in which a first electrical regulating element is arranged, the current passing capacity of which can be changed by a first regulating signal and is characterized by a first electrical parameter (capacitive capacity or voltage ascertained by a voltage measuring device). The device is further provided with a second regulating element in a second current path for providing the first regulating signal, the current passing capacity of which can be changed by a second regulating signal and is characterized by a second electrical parameter (capacitive capacity or voltage). The two capacitive capacities are connected in series, the control device operates the second regulating element by means of the second regulating signal and evaluates the value of the first electrical parameter in order to identify a fault in the first regulating element, said evaluation comprising a comparison of said value with at least one reference predetermined value.

The utility model discloses a roof photovoltaic practical training device, which comprises a photovoltaic panel, a support for installing the photovoltaic panel on a roof and a storage battery connected with the photovoltaic panel and provided with a battery management system, an ampere meter and a voltmeter which are used for monitoring are further arranged between the photovoltaic panel and the storage battery, and assembly practical training is carried out through the photovoltaic panel and the support. The LED lamp further comprises some connecting assemblies and some electronic components which are all in the prior art and are not described in details any more. The device further comprises a sun-shading mechanism which is arranged on the support and used for shading a practical trainee, the practical trainee cannot be too hot during operation, especially in summer, the heatstroke probability is reduced, and the sun-shading mechanism can rotate around the support so that the practical trainee can be moved away from the photovoltaic panel after installation is completed. And rotation is used for moving to one side after installation, so that a photovoltaic panel is prevented from being shielded, and normal photovoltaic power generation is realized.

The invention discloses a method and a system for evaluating expansion of a sodium ion battery in real time. The method comprises the following steps of: multi-source data acquisition: acquiring battery temperature, working current, terminal voltage and surface stress in real time by adopting a multi-source sensing module; electrolyte concentration gradient modeling: calculating the electrolyte concentration gradient according to sodium ion diffusion kinetics; dynamically calculating an expansion coefficient: calculating an electrochemical expansion coefficient in combination with a sodium ion deintercalation efficiency factor; deep learning prediction: inputting the feature vector into the model, and outputting an expansion force predicted value; residual error correction: a prediction result is optimized through a de-noising auto-encoder; the system is used for implementing the method. According to the method, the influence of sodium ion diffusion kinetics, deintercalation efficiency factors and mechanical stress is fully considered, so that the expansion force of the sodium ion battery is predicted to obtain higher prediction precision.