88results about How to "Monitor voltage in real time" patented technology

The invention discloses a high-power direct-current charging machine/pile DCDC conversion device for an electric automobile and a control method of the high-power direct-current charging machine/pile DCDC conversion device. A multiphase interleaving voltage decrease and increase adjustment technology is adopted in the device, the requirements for adjustment of wide voltage input and wide voltage output are met, and through the modularized control structure design, the output of charging energy can be controlled, the output ripples can be reduced, and power and efficiency are improved. The output voltage and the current of the device can both be controlled, and the device has the protection functions of current protection, voltage protection, temperature protection, power protection, drive short circuit protection and the like; and a pre-starting current limiting module, a charging pre-starting and discharging protection module, a hardware overcurrent protection module and a fault signal processing module are additionally arranged, so that the safe reliability of the device is effectively enhanced. The device is small in ripple, high in conversion efficiency, low in cost, simple in structure, small in start current and high in safe reliability, the device can be used for high-power direct-current charging machine/pile DCDC power conversion for the electric automobile and also be used for other power and power supply equipment, and the device is suitable for being used in various power and electronic fields.

The embodiment of the present invention discloses a charging control method and system. The method includes a step of receiving a high-voltage power-on instruction sent by a VCU, closing a main negative relay, and connecting a negative output end of a battery pack to a negative connecting end of a load circuit, a step of closing a first pre-charge relay in a first pre-charge circuit when a condition that the front and back voltage of the main negative relay reaches target voltage is monitored, accessing the first pre-charge circuit and carrying out pre-charge on a high voltage loop, a step of carrying out fault reporting when the pre-charge of a load loop is completed in T1 after closing the first pre-charge relay is monitored and stopping high-voltage power-on, and a step of disconnecting the first pre-charge relay when a condition that a ratio of the voltage of the load loop to the voltage of the battery pack is smaller than a preset ratio in T2 after closing the first pre-charge relay, accessing the second pre-charge circuit, and repeating the above flow. According to the embodiment of the present invention, an abnormal condition in a pre-charge process can be timely diagnosed.

The invention discloses a charging method and electronic equipment. The charging method includes the steps that the voltage of a battery of the electronic equipment is monitored in real time; when the voltage of the battery is within a low voltage range and the electronic equipment needs to be charged, the battery is charged according to a first charging rule, wherein the first charging rule comprises at least two charging stages. According to the technical scheme, the technical problem that according to electronic equipment in the prior art, neither the service life of a battery nor the energy density of a battery core can be guaranteed is solved, and the charging speed of the initial stage is increased.

The invention provides a wireless universal air-conditioner remote control socket based on a wireless sensor network. The remote control socket comprises a socket circuit, a commercial power 220V socket, an air-conditioner plug, a GPRS/GSM module, a computer wireless communication module, a mobile phone and a computer. Wireless sensor network, GPRS/GSM, electric energy detection, computer and traditional universal remote control technology are employed. The socket circuit realizes switch of the air-conditioner plug and the commercial power 220V socket. A user can send an instruction to the computer through the GPRS/GSM module or input the instruction directly on the computer. The instruction is sent to the socket circuit through the computer wireless communication module. According to an instruction requirement, the socket circuit can carry out arrangement and state adjustment on an air-conditioner of an arbitrary brand, and simultaneously the socket circuit detects a work parameter of the air-conditioner continuously and sends the work parameter to the computer for processing. When the work parameter of the air-conditioner exceeds a safe threshold scope, the socket circuit cut off the electricity supply timely and gives an alarm, thus utilizing the mobile phone or computer to carry out remote control and real-time monitoring on the air-conditioner of an arbitrary brand is realized.

The invention relates to a transmission grid fault detection system and method based on an internet of thing technology. The method is characterized by: monitoring online and in real time whether changes of the voltage and current of a high-voltage transmission line three-phase fixed point are balanced by utilizing a three-phase zero sequence voltage and a current balance measurement method; and judging whether the fixed point of a high-voltage overhead line is abnormal based on the change features of the voltage and the current under various conditions. The system comprises grounding, open circuit and short circuit fault diagnoses. The system and method of the invention enable fault monitoring level to be improved, wherein the short circuit fault alarm accuracy can reach more than 98.5%, and the grounding fault alarm accuracy can reach more than 97%. A detection device possesses a self-learning function, namely, a plurality of threshold values do not need to be set according to the transmission lines with different loads, so that the workload before putting the detection device into use is reduced, the universality is improved, the power cut range is reduced, the power cut time is shortened, and the power supply reliability is improved substantially.

The invention relates to a lithium battery pack management system. The lithium battery pack management system comprises N sets of lithium batteries, N slave control panel cards, a main control board and a host computer. The system can monitor the voltage, the charging and discharging currents, the operating temperature and the environmental temperature of a single lithium battery in real time, equalization control can be performed on the single battery with a large state difference according to the detected voltage of the lithium battery and an equalization algorithm brought forward, and the consistency of the battery is improved. According to collected parameters, the main control board can give an SOC estimated value, provides a charging and discharging management strategy, and extends the service lifetime of the battery. The host computer displays the collected state information, control information, abnormality information and alarm information of a lithium battery pack and provides friendly man-computer interaction. Meanwhile, a similar modularization design scheme is brought forward for hardware development of the system, and the maintenance cost can be effectively reduced.

The invention discloses a motor torque control method aiming at different driving modes. The motor torque control method aiming at the different driving modes comprises the following steps that (1) anaccelerator pedal position signal, an accelerator pedal change rate signal, a gear signal, a motor voltage signal and a battery SOC signal are acquired through a high-speed CAN bus to judge an immediate driving mode of a driver; the driving mode comprises an economic mode and a power mode; (2) the motor voltage signal is acquired, and initial motor target torque is determined according to the current voltage of a motor; and (3) the initial motor target torque is adjusted to final motor target torque according to the driving mode result judged in the step (1);and the final motor target torqueis the motor torque corresponding to a pedal working mode under the corresponding pedal opening under the specific working condition. According to the motor torque control method aiming at the different driving modes, the motor torque is rapidly adjusted according to the driving modes of a driver, the economical and dynamic requirements of the whole electric vehicle are met, and the endurance mileage of the whole vehicle and the output accuracy of the motor target torque are improved.

The invention discloses a method for diagnosing faults of a bidirectional DC-DC converter applied to a new energy automobile power system. The method comprises recoverable software fault diagnosis, hardware recoverable fault diagnosis, software unrecoverable fault diagnosis and hardware unrecoverable fault diagnosis, wherein abnormal conditions are diagnosed through the recoverable software fault diagnosis and the hardware recoverable fault diagnosis, the faults are reported, and after the abnormal conditions disappear, the faults are removed; abnormal conditions are diagnosed through the software unrecoverable fault diagnosis and the hardware unrecoverable fault diagnosis, the faults are reported, and after the abnormal conditions disappear, the faults are not removed immediately. The bidirectional DC-DC converter monitors the states of the current, the voltage, the temperature, the CAN information and the IGBT power tube of the bidirectional DC-DC converter in real time, the corresponding faults are reported once the abnormal conditions occur, the working reliability of the bidirectional DC-DC converter can be guaranteed, and therefore the reliability of the power system is improved.

The invention provides a fire pre-judging and extinguishing system for a storage battery pack of a direct current power system. The system comprises a remote monitoring layer, a network communicatinglayer and a station end equipment layer. The invention provides a fire pre-judging and extinguishing method for the storage battery pack of the direct current power system at the same time. The station end equipment layer collects operation state information of the storage battery pack. By means of the network communicating layer, the information is transferred to a data center server, and then distributed to all remote monitoring terminals of the remote monitoring layer. According to the system, by collecting the operation state information of storage battery pack voltage, single-body voltage, inner resistance, temperature, charging and discharging current and the like of the storage battery pack, working state information of an outlet fuse or breaker of the storage battery pack, workingstate information of a charger, combustible gas smoke alarm information and the like are monitored online, the integrated comprehensive fire pre-judging and extinguishing system is put up, by the adoption of multiple monitoring measures, monitoring is accurate and in time, the loss caused by fires can be reduced to the largest extent, and safe and stable operation of the direct current power system is guaranteed.

The invention discloses an automobile starting system and method based on low-voltage storage battery intelligent management. The system comprises a storage battery, an IBS sensor, an engine control system, a vehicle control unit and a DC/DC converter, and the IBS sensor is used for monitoring battery state information of the storage battery and voltage drop value information in the process of starting an engine by a 12V starter in real time; the engine control system is used for receiving the battery state information and the voltage drop value information and feeding back the battery state information and the voltage drop value information to the vehicle control unit; and the vehicle control unit is used for adjusting the charging power/voltage of the DC/DC converter to the storage battery in real time and controlling the SOC of the storage battery to meet a preset SOC threshold value. By the adoption of the method, the SOC of the storage battery and the starting capacity of a 12V starter for starting an engine are guaranteed as well after the load of the whole vehicle is dynamically changed and the long-term use performance of the storage battery is attenuated.

The invention relates to the technical field of electrical equipment and aims to provide an intelligent multifunctional temperature measurement low voltage switch cabinet monitoring system. The intelligent multifunctional temperature measurement low voltage switch cabinet monitoring system comprises a measurement terminal, a control terminal, a remote terminal, an actuator and a power module, wherein the control terminal is in communication connection with the measurement terminal and the remote terminal and is used for controlling the actuator for acting, the measurement terminal comprises atemperature sensor, a humidity sensor, a voltage transformer, a current transformer, a signal conditioning circuit, a low pass filter, multiple paths of switches, an A/D converter and a first communication module, the control terminal comprises a second communication module, a main CPU, a secondary CPU and a third communication module, and the actuator comprises a heating dehumidifier, a display unit, an alarm unit and a fan. The intelligent multifunctional temperature measurement low voltage switch cabinet monitoring system has advantages of high intelligentization and reliability.

The invention discloses a magnetron sputtering film coating device capable of automatically controlling plasma parameters. The magnetron sputtering film coating device comprises a vacuum room and a plasma radio-frequency power supply; a motive seal structure used for penetrating through a plasma probe is arranged on the vacuum room, and the output end of the plasma probe is connected with the input end of a data collecting and processing system; and the output end of the data collecting and processing system is connected with the input end of a PC, the output end of the PC is connected with the input end of a PLC, and the output end of the PLC is connected with the plasma radio-frequency power supply. According to the magnetron sputtering film coating device capable of automatically controlling the plasma parameters, a plasma probe system is treated as a monitoring way of the plasma parameters, and the PC and the PLC are treated as operation units to control the parameters in the magnetron sputtering film coating process, so that the magnetron sputtering film coating process is complete in intelligent automation, and a high-quality finished film is manufactured.

The invention relates to an intelligent solar conjunction box in the field of solar technology. The conjunction box comprises a conjunction box body and a conjunction box cover match covers the conjunction box body in pair, an accommodation cavity is formed between the conjunction box body and the conjunction box cover, and internally provided with a master control circuit board, the front end of the master control circuit board is welded to four binding posts, a first terminal and a second terminal are respectively welded at the two sides of the rear end of the master control circuit board, the master control circuit board comprises a master control chip, a thermosensitive sensor, a voltage sensor and a current sensor, and the master control chip is mounted between a first joint and a second joint. The master control circuit board is additionally arranged to monitor the temperature, voltage and current of a solar cell panel in real time; and thus, defects and hidden safety hazard in a system can be found in shortest time, faults can be rapidly eliminated, power of the solar cell panel in different complex climate environments can be output in an optimized manner, the total photovoltaic power generation efficiency of the solar cell panel is improved, and the power generation cost is reduced.

The invention relates to the technical field of electric vehicles, in particular to a low-voltage storage battery charging system and method. The charging system comprises a low-voltage storage battery which can be used for supplying power to a low-voltage electric appliance of the vehicle; a power battery pack; a direct current converter, which can be used for receiving the voltage provided by the power battery pack when the positive electrode relay and the negative electrode relay of the power battery pack are closed and converting the voltage into the charging voltage of the low-voltage storage battery so as to charge the low-voltage storage battery; and a DCDC controller, which is electrically connected with the low-voltage storage battery and can be used for monitoring the voltage ofthe low-voltage storage battery when the vehicle is in a dormant state; wherein the DCDC controller is in communication connection with a battery management system of the vehicle and is used for awakening the battery management system when the voltage of the low-voltage storage battery is lower than a first threshold value, so that the battery management system closes a positive electrode relay and a negative electrode relay of the power battery pack.

The invention relates to a warehouse electricity utilization monitoring device. The warehouse electricity utilization monitoring device includes a single-chip microcomputer as well as a power source module, a relay control module, a remote communication module, a current transformer, a voltage transformer, an electric leakage sampling module, a sensor group, a remote alarm module and an on-site alarm module which are respectively connected with the single-chip microcomputer; each sensor in the sensor group is connected with the single-chip microcomputer through an optically-coupled isolator; and the power source module is connected with the single-chip microcomputer, the remote alarm module, the on-site alarm module, the remote communication module and the sensors in the sensor group respectively. The warehouse electricity utilization monitoring device provided by the invention can monitor the environment data, current, voltage and data about electric leakage of the warehouse in real time, and transmits detected data to a remote upper computer and receive instruction data of the upper computer, and can realize control on electricity utilization switches of the warehouse, and realize intelligent control on electricity utilization of the warehouse. The warehouse electricity utilization monitoring device has the advantages of simple structure, convenient use and high safety.

The invention relates to a series-mode nickel-metal hydride battery charging and discharging motor, which comprises a charging and discharging unit used for charging and discharging a nickel-metal hydride battery, a motion unit used for clamping the nickel-metal hydride battery and a general controller used for controlling operations of the charging and discharging unit and the motion unit, wherein the charging and discharging unit comprises a power supply cabinet, a charging and discharging power supply, a power supply, a power supply control board, an alarm and a heat dissipation device; themotion unit comprises a motion mechanism cabinet and a clamping mechanism used for clamping the nickel-metal hydride battery, the clamping mechanism comprises an upper probe board assembly, a lower probe board assembly, a driving cylinder, a guide rod, a clamping frame, a tray and a controller. The series-mode nickel-metal hydride battery charging and discharging motor has the beneficial effectsthat a constant-current charging and discharging process can be performed on cylindrical nickel-metal hydride batteries on the tray under a rated current condition, real-time monitoring can be performed on parameters such current, voltage and tray temperature of the batteries in the charging and discharging process, and a corresponding curve is depicted. The series-mode nickel-metal hydride battery charging and discharging motor adapts to dimensions of the cylindrical nickel-metal hydride batteries which change in height and size within a certain range, and is simple and convenient in producttype changing operation.

The invention discloses an intelligent system preventing power lack for an automobile battery. The intelligent system comprises an ECU, an engine, an electric generator, a gear switch and a storage battery, the ECU is electrically connected with the engine which is connected with the electric generator, the electric generator is connected with the storage battery, and the storage battery and the gear switch are connected with the ECU respectively. According to the intelligent system, the ECU adopts normalizing for power supply, battery voltage is monitored in real time, when the battery voltage is lower than a safe value, and an automobile is in a safe state, the electric generator is started to charge the battery, wherein the safe value varies according to different batteries; after charging is completed, the storage battery voltage is monitored continuously, and circulation detection and circulation charging are achieved. In this way, the intelligent system has the following advantages that the battery voltage is monitored in real time, intelligent charging is conducted, and the problem of power lack of the battery is solved; power lack of the battery is prevented, and the service life of the battery is prolonged.

The invention discloses a train brake recovery system and method. The system comprises a traction net and an energy storage electric station, wherein the energy storage electric station is connected with the traction net, and comprises a two-way DC/DC converter and a controller; the controller is used for controlling the two-way DC/DC converter according to the voltage of the traction net so as to control the energy storage electric station to perform charging or discharging. According to the embodiment of the invention, the braking electric energy is absorbed through the energy storage electric station, so that the recovery and the reutilization of the braking electric energy are realized; the energy source waste is reduced; the traction net load is reduced; the voltage of the traction net is effectively monitored; parts of the system are protected; the damage of electric appliances on the traction net is avoided; the system safety is improved. The embodiment of the invention also provides the energy storage electric station and a control center for train dispatching.

The invention discloses a lithium power battery pack monitoring system which comprises an upper computer, a communication module and a battery pack packing box monitoring system. The communication module is connected with the upper computer. The battery pack packing box monitoring system comprises a voltage acquisition module and a pressure acquisition module. The voltage acquisition module and the pressure acquisition module are electrically connected with the communication module. According to the lithium power battery pack monitoring system, the voltage acquisition module and the pressure acquisition module are used for collecting voltage parameters and pressure parameters of a lithium power battery pack respectively, the voltage parameters and the pressure parameters are converted through the communication module and transmitted to the upper computer, and then real-time monitoring of the voltage parameters and the pressure parameters of the lithium power battery pack is completed; monitored data are diversified and comprehensively reflect the service conditions of the lithium power battery pack, and multiple lithium power battery packs can be monitored through the upper computer.

The invention discloses an intelligent low-voltage circuit breaker controller. The intelligent low-voltage circuit breaker controller comprises a signal acquisition circuit, a temperature detection circuit, a microprocessor, an execution module, a clock calibration module, a keyboard and an externally-expanded memorizer circuit, wherein the signal acquisition circuit is used for acquiring a current change value and a voltage change value of a power grid and generating an acquired signal to be sent to the microprocessor; the temperature detection circuit is used for detecting the change of temperatures and sending a generated temperature changing signal to the microprocessor; the microprocessor is used for sending the received acquired signal and temperature changing signal to a display module, processing the received acquired signal and temperature changing signal and sending a generated executing signal to the execution module; the microprocessor is further used for sending the acquired signal, the temperature changing signal and the executing signal to the externally-expanded memorizer circuit; the execution module is used for carrying out switching on/off movement on a low-voltage circuit breaker switch according to the received executing signal; the clock calibration module is used for carrying out clock calibration on the microprocessor; the keyboard is used for setting the initial parameter value of the microprocessor; the externally-expanded memorizer circuit is used for wirelessly sending the signals sent by the microprocessor to a remote console to be stored simultaneously.

The invention provides an LED intelligent display system which comprises a data platform for obtaining movement data from a client side, storing the movement data and obtaining real-time weather data from the outside world, an environment monitoring subsystem for collecting real-time environment information, a lamp monitoring subsystem for collecting running information of an LED lamp and an LED display screen, and an intelligent main controller for obtaining the weather data from the data platform and generating a corresponding weather pattern in real time so as to display the weather pattern on the LED display screen in real time, obtaining the environment information from the environment monitoring subsystem so as to display the environment data on the LED display screen in real time, obtaining the movement data from the data platform so as to display user information corresponding to the movement data ranked in the front and the movement data on the LED display screen, obtaining the running information of the LED lamp and the LED display screen from the lamp monitoring subsystem and storing the running information, and controlling the running of the LED lamp and/or the LED display screen through a controller.