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41results about How to "Realize overcurrent protection function" patented technology
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Compact type insulated gate bipolar transistor (IGBT) module driving unit
ActiveCN103199678AImprove versatilitySimple systemPower conversion systemsInsulated-gate bipolar transistorEngineering
The invention discloses a compact type insulated gate bipolar transistor (IGBT) module driving unit. The compact type IGBT module driving unit comprises a power board, a driving core board and a driving adaptive board, wherein a control protection circuit is arranged on the driving core board, a driving circuit is arranged on the driving adaptive board, and the power board, the driving core board and the driving adaptive board are connected in sequence through a cable or connecting terminals. According to the compact type IGBT module driving unit, a power module is independently arranged, core circuits of control protection and the like of an IGBT module are placed in the driving core board, the driving circuit is placed in the adaptive board, and only a corresponding module adaptive board needs to be changed so as to correspond to IGBT modules of different manufacturers and different model numbers. The core board can be connected with module adaptive boards of various model numbers, so that the aim of being in common use is achieved. A temperature measurement circuit, an electric current measurement circuit and a control protection circuit are designed to be in the same driving core board, wherein the temperature measurement circuit, the electric current measurement circuit and the control protection circuit are arranged in a dispersed mode, so that compactibility is achieved. Optional functions such as overheating protection, short pulse suppression and weak light protection are arranged, so that flexible smart configuration is achieved.
Owner:NARI TECH CO LTD +1
Novel automatic cleaning equipment for zinc-silver batteries
ActiveCN106623195AEffective cleaningRealize automatic cleaningDrying solid materials without heatDrying gas arrangementsElectrical batteryWater rinsing
The invention relates to novel automatic cleaning equipment for zinc-silver batteries. The novel automatic cleaning equipment for the zinc-silver batteries comprises boric acid water flushing module used for flushing away dirt on the surfaces of the batteries, a grabbing and transferring module used for transferring the batteries from one station to the next station, a clear water rinsing module used for flushing away residual dirt and boric acid, a brush washing module used for assisting in washing, a water-blowing air-drying module used for blowing away residual water on the surfaces of the batteries, a sponge wiping module used for wiping the surfaces of the batteries, a drying module used for drying the batteries, and an electrical module used for providing working control commands and power for all the other modules. According to the novel automatic cleaning equipment for the zinc-silver batteries, circuits and electrical connection are modular, sectional design according to functions is achieved on the aspect of structural design, and automation and intellectualization of a system are achieved; an alarm function is achieved through a human-computer interaction interface and an indicator light; and full-automatic cleaning of the zinc-silver batteries can be achieved efficiently and rapidly, the cleaning effect is good, and the safety performance is high.
Owner:NAVAL UNIV OF ENG PLA
IGBT (Insulated Gate Bipolar Translator) short circuit protection detection circuit based on driving chip
ActiveCN102361319AAvoid burnsRealize overcurrent protection functionCurrent/voltage measurementArrangements responsive to excess currentElectrical resistance and conductanceEngineering
The invention discloses an IGBT (Insulated Gate Bipolar Translator) short circuit protection detection circuit based on a driving chip. The detection circuit comprises an isolated driving circuit, wherein the isolated driving circuit comprises an isolated driving chip and a second resistor; the output pin of the isolated driving chip is connected with one end of the second resistor; the other endof the second resistor is connected with the base of an IGBT to be detected; the isolated driving chip further comprises an input pin and an overcurrent detection pin DESAT; the input pin is connected with a PWM (Pulse-Width Modulation) driving signal of a host; the overcurrent detection circuit comprises a first resistor, a first voltage regulator tube and a first diode; the overcurrent detection pin DESAT is connected with one end of the first resistor and the cathode of the first voltage regulator tube respectively; the other end of the first resistor is connected with a positive power supply; the anode of the first voltage regulator tube is connected with the cathode of the first diode; and the anode of the first diode is connected with the collector of an IGBT to be detected. The detection circuit has high IGBT short circuit protection reliability, a simple structure and high portability.
Owner:HANGZHOU RIDING CONTROL TECH
Program downloading method with JTAG interface terminal
ActiveCN101110035ARealize downloadLow costProgram loading/initiatingElectricityJoint Test Action Group
The utility model discloses a method of program download which is provided with the interface terminal of joint test action group (JTAG). The method comprises the pre-set function on the download equipment when the power is on as well as the following procedures, namely, to equip and ascertain the working voltage of the JTAG interface terminal and the operating level of the JTAG interface, to make the download equipment supply power for the terminal, to initialize the terminal, to set the processor of the terminal in motion, to set the memory of the terminal into the regular read and write condition, to complete the download of the plug-in and to download the program code. The utility model can not only realize the program download, but reduce the high cost of emulator as well.
Owner:ZTE CORP
Collector plate structure of circular lithium ion battery and welding method
PendingCN114473210ASimple structureSimple welding methodWelding/soldering/cutting articlesMetal working apparatusStructural engineeringLithium-ion battery
The invention discloses a collector plate structure of a novel circular lithium ion battery and a welding method. According to the collector plate structure, a hole is formed in the middle of a negative collector plate, four fan-shaped cutting lines with the bottoms not closed are evenly arranged on the negative collector plate, two cutting straight lines in the radial direction are symmetrically arranged at the roots of the fan-shaped cutting lines with the bottoms not closed, cutting fold lines are arranged in the cutting straight lines on the negative collector plate, and the corners of the cutting fold lines are fillets; four fan-shaped cutting lines are uniformly arranged on the positive collector plate, two cutting straight lines in the radial direction are symmetrically arranged at the arc center of each fan-shaped cutting line, a cutting fold line is arranged in an area in the two cutting straight lines of the positive collector plate, the corner of the cutting fold line is a fillet, and the positive collector plate and the positive pole are subjected to bottom welding; and the negative collector plate is welded with the shell by laser. The collector plate structure and the welding method are simple and easy, and are suitable for various round all-tab rubbing processes, and the size of the adjustable collector plate is set according to different batteries, so that the overcurrent capability of a battery cell is ensured.
Owner:TIANJIN LISHEN BATTERY
Overcurrent protection method of direct current converter
ActiveCN107069669AAvoid critical failureRealize overcurrent protection functionEmergency protective circuit arrangementsCurrent limitingElectric power system
The invention relates to the field of power electronization power system and discloses an overcurrent protection method of a direct current converter. The method comprises the steps of setting a direct current converter output current instantaneous protection value according to a design margin in an element selection process, making overload and fault current limiting index requirements of the direct current converter by a system to be clear, determining a voltage-current characteristic of direct current converter steady-state output, fitting a mathematical relationship between power and a maintenance time, and forming protection scheme according to the normal, overload, fault current limiting and instantaneous overcurrent working conditions. According to the overcurrent protection method of the direct current converter, the requirements of system selective protection is fully considered, with the coordination with other protection elements of the system or a device, the complete overcurrent protection function of the direct current converter in the normal, overload, fault current limiting and instantaneous overcurrent working conditions is realized, and the power supply continuity of an power electronization power distribution network is improved.
Owner:NAVAL UNIV OF ENG PLA
Fault protection device for flexible DC (Direct Current) transmission system of wind power plant
InactiveCN104701832ARealize overcurrent protection functionGuaranteed uptimeEmergency protective arrangements for limiting excess voltage/currentPeaking power plantCurrent limiting
The invention discloses a fault protection device for a flexible DC (Direct Current) transmission system of a wind power plant and belongs to the technical field of wind power generation. The device comprises a current limiting and smoothing device, a buffer protector, a main loop switch, an unloading loop, an unloading switch and a power diode. One end of the current limiting and smoothing device is connected with a DC output end of a sending end station and the other end is respectively connected with the buffer protector and the unloading loop; the other end of the buffer protector is connected with the main loop switch; the other end of the main loop switch is respectively connected with a DC transmission line and the diode; the other end of the unloading loop is respectively connected with the unloading switch and the power diode; and the other end of the unloading switch is earthed. The fault protection device is capable of protecting the wind power plant when over-current and over-voltage faults and voltage fluctuations occur in the DC transmission line at any wind velocities; the fault protection device has the advantages of being low in cost, less in loss, high in cost performance and the like; and the reliable and safe operation of the flexible DC transmission system of the wind power plant is ensured.
Owner:QUFU NORMAL UNIV +1
Overcurrent protection device for medium-frequency asynchronous motors
InactiveCN103178495AReduce the possibility of misuseReduce usage limitationsEmergency protective circuit arrangementsOxide semiconductorThree-phase
The invention relates to an overcurrent protection device for medium-frequency asynchronous motors. Input ends of two relays are connected into two phases of a three-phase power source AC together, and output ends of the two relays are connected into a motor M and opposite to each other. Another phase in the three-phase power source AC is connected into the motor M through a sampling end of a current transformer L, a sensing end of the current transformer L is connected with a sampling resistor R and a positive electrode of a voltage comparator S after passing a rectifying diode P, sources of N-channel MOS (metal oxide semiconductor) transistors are connected with the power source, drains are respectively connected with the two relays, and grids are respectively connected with a control wire of the motor M and an anode of a thyristor J. A gate of the thyristor J is connected with an output end of the voltage comparator S. The overcurrent protection device for medium-frequency asynchronous motors realizes the overcurrent protection function for medium-frequency asynchronous motors, and is applicable to various medium-frequency asynchronous motors different in specifications and operating environments by adjusting parameters of components, low in operating limits and long in service life.
Owner:HARBIN DONGAN ENGINE GRP
NMOS power tube gate driving module, driving circuit and switching power supply
ActiveCN113067464AReduce switching lossesRealize overcurrent protection functionEmergency protection detectionPower conversion systemsHemt circuitsControl theory
The invention provides an NMOS power tube gate driving module, a driving circuit and a switching power supply, and relates to the technical field of switching power supplies, and the NMOS power tube gate driving module is realized by adopting a transistor integrated circuit process. The internal circuit of the NMOS power tube gate driving module is simple, and the NMOS power tube gate driving module is suitable for a switching power supply driving circuit and a boost switching power supply. By quickly opening and closing the NMOS power tube, the problem of large opening and closing loss when the NMOS power tube is applied to a switching power supply chip is solved, and the NMOS power tube gate driving module has an over-current detection function and has the advantages of simple structure, low cost and high reliability.
Owner:SHANGHAI XINLONG SEMICON TECH CO LTD
Intelligent electric assisting turning controller for cargo carrier
InactiveCN105882737AImprove safety and reliabilityGuaranteed strict alignmentElectrical steeringMicrocontrollerElectric power steering
The invention discloses an intelligent electric assisting turning controller for a cargo carrier. The intelligent electric assisting turning controller is characterized by comprising a microcontroller, a motor managing circuit, an outer power control circuit, a working state indicating circuit, a steering wheel sensor circuit, a central positioning sensor circuit, a power managing circuit, an EEPROM memory circuit and a host computer communication interface circuit, wherein the motor managing circuit, the outer power control circuit, the working state indicating circuit, the steering wheel sensor circuit, the center positioning sensor circuit, the power managing circuit, the EEPROM memory circuit and the host computer communication interface circuit are correspondingly connected with the microcontroller.
Owner:YUYAO HUALONG MOLDS PLASTIC PROD
Overcurrent protection circuit without static power consumption
ActiveCN107611923ASmall working currentReduce areaArrangements responsive to excess currentVoltage referenceOperational amplifier
The invention discloses an overcurrent protection circuit without static power consumption. The circuit comprises a resistor, a PMOS transistor, an NMOS transistor, an internal circuit and a shaping circuit, wherein one end of the resistor is connected with a powers supply VDD while the other end is connected with an A point, a grid of the PMOS transistor is connected with the A point connected with the resistor, a source of the PMOS transistor is connected with the power supply VDD, a drain of the PMOS is connected with a drain of the NMOS transistor, a source of the PMOS transistor is connected with a ground potential, and the drains of the PMOS transistor and the NMOS transistor are connected with the input of the shaping circuit. According to the circuit provided by the invention, thefunction of overcurrent protection is achieved via a subject circuit composed of one resistor and two MOS transistors, no static current exists, fewer devices are used than a conventional circuit, anadditional reference voltage and an operational amplifier are not needed, the function of overcurrent protection is achieved, and the purposes of reducing working current of the circuit and reducing layout area of the overcurrent protection function are achieved.
Owner:JIANGSU BRMICO ELECTRONICS
Multi-path synchronous control multifunctional vacuum circuit breaker
PendingCN111883383AConducive to miniaturization designEasy to controlHigh-tension/heavy-dress switchesAir-break switchesSynchronous controlMiniaturization
The invention discloses a multi-path synchronous control multifunctional vacuum circuit breaker, and the circuit breaker comprises a manual switch, an overcurrent protection mechanism, a plurality ofvacuum switch actuating mechanisms and a plurality of overcurrent triggering mechanisms; each vacuum switch actuating mechanism comprises a vacuum cavity, and a wire inlet end static contact, a wire outlet end static contact and a moving contact are arranged in each vacuum cavity; the moving contacts of the plurality of vacuum switch actuating mechanisms are driven by a manual switch and a drivingpiece of the overcurrent protection mechanism, the vacuum switch actuating mechanisms further comprise first permanent magnets which are arranged outside the vacuum cavity and can drive the moving contacts to move linearly through magnetic force, and the first permanent magnets are provided with magnet center holes. A driving piece of the manual switch and overcurrent protection mechanism is a rotating shaft, and the rotating shaft penetrates through magnet center holes of the first permanent magnets of the plurality of vacuum switch execution mechanisms. The rotating shaft is adopted as a driving part of the manual switch and the overcurrent protection mechanism, the occupied space is smaller, and miniaturization design and accurate control of the whole circuit breaker are facilitated.
Owner:四川艾贝斯科技发展有限公司
Overcurrent protection method of PMSM driver
ActiveCN105071710AReduce or even eliminate voltage pumpingProtection securitySingle motor speed/torque controlEmergency protective circuit arrangementsMicrocontrollerCapacitance
The invention provides an overcurrent protection method of a PMSM driver, and belongs to the technical field of motor equipment. The method comprises the steps that 1) when a PMSM M operates normally, a microcontroller U uses an internal counter to detect and record time D between adjacent zero-crossing points of any two phases of currents in real time; 2) when overcurrent or other emergency state occurs in the PMSM M and the PMSM needs shutdown, the microcontroller U uses a current sensor L to detect current states of phases A, B and C, and control ON / OFF states of switch tubes Q1 to Q6; and 3) the connected switch tubes are switched off at time D2 from the moment that overcurrent or other emergency state occurs in the PMSM M and the PMSM needs shutdown, D2=3D / 2-D1, and thus, overcurrent protection for the motor driver is realized. Thus, voltage pumping-up of a bus capacitor of the motor driver can be substantially reduced, lower than 10% of the original, and even eliminated, and the safety of the driver can be protected in emergency states as overcurrent.
Owner:哈尔滨深能电机有限公司
LED driving circuit compatible to different types of ballast
InactiveCN106793338ARealize rectificationProtection against reverse breakdownElectrical apparatusElectroluminescent light sourcesEngineeringHigh pressure
An embodiment of the invention discloses an LED driving circuit compatible to different types of ballast. The LED driving circuit comprises two rectification circuits, a filter circuit, a high-voltage absorption circuit and an LED constant-current circuit. The filter circuit, the high-voltage absorption circuit and the LED constant-current circuit are sequentially arranged at output ends of the rectification circuits in a parallel connection manner, input ends of the filter circuit, the high-voltage absorption circuit and the LED constant-current circuit are connected with the output ends of the rectification circuits, and the rectification circuits are used for rectifying output or AC input of the electronic ballast and the inductance ballast; the filter circuit is used for filtering output of the rectification circuits; the high-voltage absorption circuit is used for absorbing high voltages when the high voltages are outputted by the electronic ballast; the LED constant-current circuit is used for providing constant-current voltages required when LED load works.
Owner:浙江东元照明有限公司
Battery management system with hybrid switching devices capable of being expanded in parallel
InactiveCN113489117AImprove securityAccelerateCircuit monitoring/indicationCharge equalisation circuitBattery management systemsBus mastering
The invention discloses a battery management system with hybrid switching devices capable of being expanded in parallel. The battery management system comprises a bus control unit and a branch line control unit. The bus control unit comprises a main controller and a first switch module; the branch control unit comprises a battery module, a second switch module, a branch controller and a detection module; the branch line controller is connected with the main controller, and the branch line controller uploads acquired battery physical information to the main controller; and the main controller issues a control instruction to the branch line controller according to the acquired information. According to the invention, the main controller obtains the state and the signal of the branch line controller, carries out judgment through detecting the collected information, and controls the on-off state of the power supply main loop; meanwhile, the branch line controller can control the on-off state of the battery module through the second switch module according to the detected information so that the battery management system has double guarantees, and the safety is improved.
Owner:CHENGDU UNI LINK ENERGY
IGBT (Insulated Gate Bipolar Translator) short circuit protection detection circuit based on driving chip
ActiveCN102361319BRegulation stabilityAvoid interferenceCurrent/voltage measurementArrangements responsive to excess currentElectrical resistance and conductanceEngineering
The invention discloses an IGBT (Insulated Gate Bipolar Translator) short circuit protection detection circuit based on a driving chip. The detection circuit comprises an isolated driving circuit, wherein the isolated driving circuit comprises an isolated driving chip and a second resistor; the output pin of the isolated driving chip is connected with one end of the second resistor; the other endof the second resistor is connected with the base of an IGBT to be detected; the isolated driving chip further comprises an input pin and an overcurrent detection pin DESAT; the input pin is connected with a PWM (Pulse-Width Modulation) driving signal of a host; the overcurrent detection circuit comprises a first resistor, a first voltage regulator tube and a first diode; the overcurrent detection pin DESAT is connected with one end of the first resistor and the cathode of the first voltage regulator tube respectively; the other end of the first resistor is connected with a positive power supply; the anode of the first voltage regulator tube is connected with the cathode of the first diode; and the anode of the first diode is connected with the collector of an IGBT to be detected. The detection circuit has high IGBT short circuit protection reliability, a simple structure and high portability.
Owner:HANGZHOU RIDING CONTROL TECH
Full-intelligent light-emitting diode (LED) street lamp integrated control system
InactiveCN103096604ARealize automatic controlTimely collectionElectric light circuit arrangementEnergy efficient lightingAutomatic controlPower flow
The invention relates to the technical field of street lamp intelligent control, in particular to a full-intelligent light-emitting diode (LED) street lamp integrated control system. The system comprises a central processing unit (CPU) and a power supply module supplying work power for the CPU, wherein the CPU is provided with parameter setting buttons in an integrated mode, the input end of the CPU is connected with a temperature collecting unit and a current collecting unit, and the output end of the CPU is connected with a fan output control unit and a light source output control unit. By means of the system, the technical problems of LED light failure, LED heat dissipation and intelligent control are solved, and the system has the functions that full-power and half-power can be switched automatically, temperature rise can be controlled automatically, power control is in a period dividing mode, overcurrent protection can be automatically controlled and the like. Full-intelligent integrated control is achieved, the service life of an LED is effectively prolonged, energy and cost are saved, installation is convenient, and industrial production is benefited.
Owner:扬州亚联光电科技有限公司
nmos power transistor gate drive module, drive circuit and switching power supply
ActiveCN113067464BReduce switching lossesRealize overcurrent protection functionEmergency protection detectionPower conversion systemsHemt circuitsControl theory
The invention provides an NMOS power tube gate drive module, a drive circuit and a switching power supply, and relates to the technical field of switching power supplies. The NMOS power tube gate drive module is realized by a transistor integrated circuit process. The NMOS power transistor grid drive module has a simple internal circuit and is suitable for switching power supply drive circuits and boosted switching power supplies. By quickly turning on and off the NMOS power tube, it solves the problem of large turn-on and turn-off losses of the NMOS power tube used in the switching power supply chip, and has its own over-current detection function, which has the advantages of simple structure, low cost, and high reliability.
Owner:SHANGHAI XINLONG SEMICON TECH CO LTD
Distribution automation terminal intelligent power supply device and battery evaluation method
ActiveCN111130197BAchieving sampling core capacityRealize intelligent switching managementElectrical testingCells structural combinationElectrical batteryControl engineering
The invention discloses an intelligent power supply device for a power distribution automation terminal and a battery evaluation method. The device includes an AC input module, a communication module, a display module, an alarm module, a monitoring control module, a battery management module and a power output module. The monitoring The control module is respectively connected with the AC input module, the communication module, the display module, the alarm module, the battery management module, and the power output module, and the power output module is respectively connected with the AC input module and the battery management module; the AC input module, the communication module , alarm module, battery management module and power output module are all externally connected with wiring ports. Through the cooperation of the battery management module and the monitoring and control module, the present invention can realize a powerful battery management function, which is beneficial to the normal operation of the power distribution automation terminal, and through the cooperation of the monitoring and control module and the display module, it can realize the functions of event recording and searching.
Owner:广州思泰信息技术有限公司
Light control circuit of electric two-wheeled vehicle
ActiveCN111836434AImprove reliabilityImprove securityElectrical apparatusEnergy saving control techniquesHemt circuitsEngineering
The invention relates to the technical field of electric vehicle circuit control, and particularly relates to a light control circuit of an electric two-wheeled vehicle. The light control circuit comprises resistors R3, R7, R14 and R15, a second diode, a fourth triode and a PMOS transistor which form an MOS transistor driving circuit, wherein one end of the resistor R14 is connected with the Light_Control end, and the other end of the resistor R14 is connected with the anode of the second diode; the cathode of the second diode is connected with the base of the fourth triode; the emitter of thefourth triode is connected to one end of the resistor R15; the other end of the resistor R15 is connected to the anode of the second diode; the collector of the fourth triode is connected to one endof the resistor R7 and the G electrode of the PMOS transistor respectively; the other end of the resistor R7 is connected with one end of the resistor R3, the other end of the resistor R3 is connectedwith the S electrode of the PMOS transistor; the D electrode of the PMOS transistor is respectively connected with a first steering lamp and a second steering lamp; the first steering lamp and the second steering lamp are connected in parallel. According to the embodiment of the invention, the MOS transistor driving circuit is formed, and the PMOS transistor controls the light switches of the front and rear steering lamps of the electric two-wheeled vehicle according to high and low levels, so that the problems of abnormal flickering of light and the like caused by unstable contact due to aging of the switches are avoided.
Owner:WUHAN KOTEI TECH CORP
Gas connector with pressure stabilization and super-flow protection functions
ActiveCN109812609AGood for voltage regulationHighlight substantiveOperating means/releasing devices for valvesEqualizing valvesPressure stabilizationEngineering
The invention discloses a gas connector with pressure stabilization and super-flow protection functions. According to the gas connector, when the pressure of external fed air is too high, an ejector rod is moved towards a first piston under action of the air feeding thrust, the airflow space between a bulge loop part and a first valve port is gradually deceased, and accordingly, the flow rate of the first valve port is not increased suddenly; after the pressure of the external fed air is lowered, the air feeding thrust to the ejector rod is decreased, at the moment, a first spring presses theejector rod to move reversely through the first piston under the elastic reset action of the first spring, thus, the airflow space between the bulge loop part and the first valve port is gradually increased, accordingly, the flow rate of the first valve port is not decreased suddenly, and pressure stabilization control is facilitated; and when the super-flow phenomenon occurs to the outer end of asecond valve port, if a gas appliance connected with the gas connector is subjected to too fast flame combustion, a second piston overcomes the elastic force of a third spring under action of high negative pressure so that the second valve port can be sealed, only direct-communicating small holes are open for ventilation, thus, flames of the gas appliance become low fire, and the super-flow protection function is achieved.
Owner:CHANT HEAT ENERGY SCI & TECH (ZHONGSHAN) CO LTD
An overcurrent protection circuit and switching power supply chip
ActiveCN113241940BShort on-timeDoes not change discharge timeDc-dc conversionElectric variable regulationCapacitanceReference current
The invention discloses an overcurrent protection circuit and a switching power supply chip, which are used to protect the power tube inside the switching power supply chip, including a reference current source module, an overcurrent detection module and an oscillator module; When the current of the power tube reaches the overcurrent protection point, the triode in the overcurrent detection module is turned on, and charges the energy storage capacitor in the oscillator module, increasing the charging current of the energy storage capacitor to make the energy storage capacitor The voltage of the energy storage capacitor accelerates to the preset value. When the voltage of the energy storage capacitor reaches the preset value, the rectangular wave output by the oscillator module turns to a high level, and the driving circuit module in the switching power supply chip receives this high level. After the power level signal is turned off, the power transistor inside the switching power supply chip is driven to be turned off to realize overcurrent protection. The invention is suitable for switching power supply chips using power triodes and power MOS tubes as switching tubes, and meets the overcurrent protection requirements of buck-type and boost-type switching power supply chips.
Owner:SHANGHAI XINLONG SEMICON TECH CO LTD
Method and system for detecting and suppressing DC component of transformer current
ActiveCN112803775BAvoid saturationSmall excitation currentDc-dc conversionElectric variable regulationCapacitanceElectrical resistance and conductance
Owner:GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD.
A new type of automatic cleaning equipment for zinc-silver batteries
ActiveCN106623195BRealize automatic cleaningAchieve cleaningDrying solid materials without heatDrying gas arrangementsWater rinsingElectrical battery
The invention relates to a new type of zinc-silver battery automatic cleaning equipment, which includes: a boric acid water washing module for washing and removing stains on the battery surface, and a grabbing and transferring module for transferring the battery from the previous work station to the next work station. , water rinsing module for rinsing residual stains and boric acid, brush washing module for auxiliary washing, water blowing and air drying module for drying residual water on the battery surface, sponge wiping module for wiping the battery surface, The drying module for battery drying and the electrical module used to provide work control instructions and power for each module. The circuit and electrical connection in the present invention are modularized, and the structural design realizes segmented design according to functions, realizing the automation and intelligence of the system; the alarm function is realized through the human-computer interaction interface and the indicator light; and it can efficiently and quickly Realize fully automatic cleaning of zinc-silver batteries, with good cleaning effect and high safety performance.
Owner:NAVAL UNIV OF ENG PLA
A controllable and adjustable space computer instruction power supply current limiting protection circuit
ActiveCN107171304BGuaranteed normal outputEnsure safetyEmergency protective arrangements for limiting excess voltage/currentCurrent limitingPower flow
Provided is a controllable and adjustable space computer instruction power supply current-limiting protection circuit. When overcurrent comes, an output current regulating circuit is started to adjust a start voltage of an instruction power supply electronic switch, thereby realizing an over-current protection function for a space computer instruction power supply; when instruction load has fault or is short circuited, the output current of the instruction power supply can be limited within a safety range; by adjusting a current sampling circuit, overcurrent protection points can be set to meet different space computer load requirements; after over-current factors are eliminated, acquisition voltage on the current sampling circuit gets smaller, the instruction power supply electronic switch is allowed to restore to normal opening and closing autonomously, and function and performance of a space computer are not influenced, thereby ensuring that a drive circuit is not burnt out under the condition of short circuit of the spacecraft instruction load; and instruction power supply and instruction signals can be released synchronously, thereby preventing long-time power up of the power supply, preventing release of wrong instructions under an idle state and ensuring safety of the spacecraft instruction power supply link.
Owner:XIAN MICROELECTRONICS TECH INST
Clean and sanitary electric window
InactiveCN106703671AAchieve stabilizationRealize overcurrent protection functionDoor/window protective devicesWindow cleanersAudio power amplifierEngineering
The invention discloses a clean and sanitary electric window which comprises a cover, a shutter sheet group, tracks, a motor and a reel pipe. The motor and the reel pipe are mounted in the cover, one end of the shutter sheet group is mounted on the reel pipe, a tail plate is arranged at the other end of the shutter sheet group, and the shutter sheet group comprises a plurality of shutter sheets which are hooked with one another; the tracks comprise inner tracks and outer tracks, the shutter sheet group is mounted in the inner tracks, and extension springs are arranged in the outer tracks. The clean and sanitary electric window has the advantages that effects of cleaning the window can be realized by the aid of roller shutter windows on the premise that work of the existing roller shutter windows is unaffected, accordingly, wastage of human resources can be reduced, the clean and sanitary electric window is safe and reliable, and high requirements of people can be met; high-gain operational amplifiers are used as voltage comparison elements for power supply circuits for the motor and electric telescopic rods and are combined with triodes, so that the clean and sanitary electric window has output voltage stabilization and over-current protection functions.
Owner:廖婕
A kind of glow plug drive and protection circuit of diesel engine air intake heating device
ActiveCN109296490BReliable shutdownRealize overcurrent protection functionMachines/enginesIncandescent ignition for enginesGlow plugDieseling
The invention provides an electric heating plug driving and protecting circuit of a diesel engine air inlet heating device. The circuit comprises a micro-controller, wherein a PWM output port of the micro-controller is in signal connection with the input end of a level conversion and over-current turn-off circuit; the output end of the level conversion and over-current turn-off circuit is in signal connection with the input end of the power drive circuit, the output ends of the power driving circuit are correspondingly in signal connection with an electric heating plug and a current sampling circuit; and the output ends of the current sampling circuits are correspondingly connected to the A / D input port of the micro-controller and the input end of an over-current detection circuit, and theoutput ends of the over-current detection circuit are in signal connection with an interrupt input port of the micro-controller and the input end of the level conversion and over-current turn-off circuit. According to the electric heating plug driving and protecting circuit of the diesel engine air inlet heating device, a software interrupt and hardware turn-off technology is adopted, so that when over-current occurs, the circuit can be reliably switched off, and the over-current protection function of the load is realized.
Owner:CHINA NORTH ENGINE INST TIANJIN
An intelligent electric power steering controller for a cargo handling vehicle
ActiveCN103786780BImprove safety and reliabilityGuaranteed strict alignmentElectrical steeringElectric power steeringCommunication interface
Owner:NINGBO CHOELEVATOR FORKELEVATOR
Compact type insulated gate bipolar transistor (IGBT) module driving unit
ActiveCN103199678BAchieve general purposeImprove versatilityPower conversion systemsHemt circuitsEngineering
The invention discloses a compact type insulated gate bipolar transistor (IGBT) module driving unit. The compact type IGBT module driving unit comprises a power board, a driving core board and a driving adaptive board, wherein a control protection circuit is arranged on the driving core board, a driving circuit is arranged on the driving adaptive board, and the power board, the driving core board and the driving adaptive board are connected in sequence through a cable or connecting terminals. According to the compact type IGBT module driving unit, a power module is independently arranged, core circuits of control protection and the like of an IGBT module are placed in the driving core board, the driving circuit is placed in the adaptive board, and only a corresponding module adaptive board needs to be changed so as to correspond to IGBT modules of different manufacturers and different model numbers. The core board can be connected with module adaptive boards of various model numbers, so that the aim of being in common use is achieved. A temperature measurement circuit, an electric current measurement circuit and a control protection circuit are designed to be in the same driving core board, wherein the temperature measurement circuit, the electric current measurement circuit and the control protection circuit are arranged in a dispersed mode, so that compactibility is achieved. Optional functions such as overheating protection, short pulse suppression and weak light protection are arranged, so that flexible smart configuration is achieved.
Owner:NARI TECH CO LTD +1
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