693results about "Relays" patented technology

The invention discloses an accurate zero crossing point control method for a built-in relay of a large-current electric energy meter, which relates to the technical field of power electronics and intelligent metering and comprises the following steps of: receiving a power grid voltage digital signal, determining a voltage zero crossing point by comparing symbol changes of adjacent sampling values, establishing a phase corresponding relation between voltage and current, and calculating a current phase corresponding relation; generating current zero crossing point prediction data; when a relay switching instruction is received, the specific moment of the next current zero crossing point is calculated, and the control signal sending moment is determined; a relay driving control signal is sent, the actual action completion moment of the relay is collected, the deviation from the expected zero crossing moment is calculated, and the mechanical action delay time parameter of the relay is corrected. By predicting the current zero-crossing time and considering the mechanical action delay characteristic of the relay, accurate switching of the built-in relay at the actual current zero-crossing point is achieved, meanwhile, the self-adaptive adjusting capacity is achieved, the arc energy during large-current switching is reduced, the service life of the relay is prolonged, and the reliability of the electric energy meter is improved.

The invention relates to the field of circuit control, in particular to a relay low-power-consumption control circuit and method, and the method comprises the steps: enabling a signal module to generate and output an enabling signal, triggering a time-delay control circuit through the enabling signal, enabling a driving voltage module to drive a relay to be closed through a first driving voltage, and enabling a second driving voltage to be closed through a second driving voltage; and after the time delay, the second driving voltage is automatically switched to maintain the pull-in state of the relay. The invention also comprises a corresponding control method which comprises the following steps: receiving an enable signal, generating a delay control signal when the enable signal is valid, and switching and outputting the first driving voltage or the second driving voltage according to the delay control signal. Through a mode of switching the driving voltage in a time-sharing manner, on the premise of ensuring reliable pull-in and holding of the relay, the power consumption of the control circuit is remarkably reduced, heat is reduced, the system reliability is improved, support is provided for miniaturization design of the relay, the structure is simple, and the power consumption optimization effect is remarkable.

The invention discloses a parallel discharge circuit and an electric flame stove. The parallel discharge circuit comprises a transformer and at least two groups of discharge branches, and the two groups of discharge branches comprise a first discharge branch and a second discharge branch. The scheme that a single transformer replaces multiple transformers is adopted, multi-time conversion loss of electric energy-magnetic energy-electric energy is reduced, electromagnetic interference is reduced, meanwhile, a stove body does not need to be provided with a large number of transformers, the size is more compact, and the parallel connection requirement of hundreds of discharging devices of the high-power electric flame stove is met; according to the invention, continuous control of asynchronous breakdown and independent charging and discharging of multiple discharging branches is realized, the method is adaptive to the breakdown threshold value difference of discharging devices among the discharging branches and the charging speed deviation of voltage-multiplying capacitors, extra voltage-sharing control is not needed, and it is ensured that all the discharging branches can stably complete charging and discharging closed loop, discharging failure is avoided, and mutual interference is avoided; the wide-voltage input circuit is suitable for various voltage inputs, and wide-voltage input is achieved.

The invention relates to the related technical field of direct-current contactor production, in particular to a glue pouring device for direct-current contactor production, which comprises a glue pouring machine, a three-axis manipulator arranged in the glue pouring machine and a bearing disc for loading a direct-current contactor, the swing air sweeping assembly is used for blowing, drying and cleaning the direct current contactor before glue pouring and comprises a pushing frame and arc-shaped pushing rods, the arc-shaped pushing rods are fixedly installed at the two ends of the pushing frame through arc-shaped rods, and the arc-shaped pushing rods are movably connected with arc-shaped pushing blocks. Through cooperation of the locking and supporting assembly and the swing air sweeping assembly, all-directional stable clamping and dead-corner-free cleaning are achieved, the process quality is guaranteed jointly, swing type air sweeping can enable airflow to cover a larger transverse area, it is guaranteed that the surface of each workpiece can be blown by the airflow for multiple times and at multiple angles through continuous reciprocating motion, and the workpiece surface cleaning efficiency is improved. And the uniformity and thoroughness of cleaning are obviously improved.

A degradation determination device determines whether each of a first opening / closing device and a fuse provided on a power path is in a degraded state. The power path has a positive electrode-side power line and a negative electrode-side power line. The first opening / closing device and the fuse are provided on the negative electrode-side power line. The degradation determination device is provided with a first potential detection unit that detects a first potential at one end of the first opening / closing device and a second potential at the opposite end thereof, a second potential detection unit that detects a first potential at one end of the fuse and a second potential at the opposite end thereof, and a control unit that determines whether each of the first opening / closing device and the fuse is in a degraded state, based on a potential difference between the first and second potentials.

The invention provides an energy-saving control method and system for an automobile relay, relates to the technical field of automobile relay control, and dynamically judges whether the relay is completely sucked in place or not by monitoring inductance change parameters of a suction coil in real time according to the change characteristics of the parameters. Once the suction is judged to be in place, the power supply of the suction coil is immediately stopped and the holding coil is switched. According to the method, the defects of a fixed delay strategy in the prior art are overcome, and the problems of pull-in failure, contact jitter, energy waste, coil overheating and the like caused by factors such as voltage fluctuation, temperature change, relay individual difference, aging and the like are solved. By accurately controlling the pull-in time, contact arc ablation can be effectively avoided, the service life of the relay is prolonged, meanwhile, unnecessary energy consumption is remarkably reduced, real energy conservation is achieved, and the reliability and efficiency of an automobile electrical system are improved.

The invention provides a relay zero-crossing time-delay calibration circuit and electrical equipment. The relay zero-crossing time-delay calibration circuit comprises a sampling circuit, a comparison module, a logic circuit and an output interface used for an external control equipment port, the sampling circuit is respectively connected with a static contact and a movable contact of the relay and is used for sampling voltage values of the static contact and the movable contact of the relay, outputting the voltage value of the static contact through a first output end of the sampling circuit and outputting the voltage value of the movable contact through a second output end of the sampling circuit; the comparison module is respectively connected with the first output end and the second output end, and the output end is connected with the logic circuit; the comparison module is used for outputting an effective driving signal to the logic circuit under the condition that the static contact voltage value is equal to the movable contact voltage value; and the logic circuit is connected with the output interface and is used for pulling up or pulling down the potential of the output interface when the effective driving signal is received.

The embodiment of the utility model provides a relay driving circuit and energy storage equipment, the relay driving circuit comprises a driving power supply assembly, the driving power supply assembly comprises a high-voltage driving power supply and a low-voltage driving power supply, and the high-voltage driving power supply is connected with a first discharge switch tube; the delay driving assembly comprises a comparator, and the output end of the comparator is connected with the base electrode of the first discharge switch tube; the control circuit comprises a relay driving switch and a second discharge switch tube; the first end of the relay is connected with the collector of the first discharge switch tube, and the second end of the relay is connected with the collector of the second discharge switch tube. According to the scheme of the invention, extra requirements for control signals of a relay circuit are omitted, and the operation complexity of energy-saving control of the relay is reduced.

To detect a temperature of a transistor chip.SOLUTION: A semiconductor unit 41 comprises a semiconductor device 40, a control section 33, and a resistance section 36. In the semiconductor device 40, a second electrode pad and a control pad are provided on a front face of a transistor chip 42, and a first electrode pad is provided on a rear face of the transistor chip 42. An ON / OFF operation between the first electrode pad and the second electrode pad is performed in response to a voltage which is inputted to the control pad. There are included a first terminal which is electrically connected to the first electrode pad, a second terminal which is electrically connected to the second electrode pad, and a control terminal which is electrically connected to the control pad. The control section 33 is electrically connected to the control terminal and controls the transistor chip 42. The resistance section 36 is provided between the control terminal and the control section 33. The second electrode pad is separated into two regions in a center of the front face of the transistor chip 42. A temperature sensitive diode 80 is disposed between the two regions.SELECTED DRAWING: Figure 18

The invention relates to a relay phase selection pull-in control method. The method comprises the following steps: acquiring a first phase voltage zero crossing point, a second phase voltage zero crossing point and a third phase voltage zero crossing point; speculating pull-in voltage zero crossing points of the first soft start relay and the second soft start relay based on the third phase voltage zero crossing point, and speculating pull-in time delay of the first soft start relay and the second soft start relay based on the pull-in voltage zero crossing points; speculating a first pre-charging zero crossing point based on the first phase voltage zero crossing point, and speculating the pull-in time delay of the first main power relay based on the first pre-charging zero crossing point; and a second pre-charge zero crossing point is speculated based on the second phase voltage zero crossing point, and the pull-in time delay of the second main power relay is speculated based on the second pre-charge zero crossing point. Inrush current can be suppressed, loss is reduced, and the service life of the relay is prolonged.

The invention provides a protection method and a protection system for relay adhesion of a battery pack and a vehicle. The protection method comprises the following steps: detecting whether a relay is adhered or not, and generating adhesion fault information under the condition that the relay is adhered; closing and opening the relay for a preset number of times at a preset time interval based on the adhesion fault information, and generating an alarm signal; and detecting whether the relay is de-adhered, and generating de-adhesion information. According to the invention, after the relay is detected to be adhered, the adhesion removing operation is executed by closing and opening the relay for many times, so that the adhesion state can be removed in time, continuous power supply caused by adhesion of the relay is avoided, and potential damage to other electrical elements and / or personnel is reduced.

The invention provides a wide voltage input self-adaptive voltage stabilization driving method and system for a direct current contactor, and particularly relates to the technical field of power electronic power conversion. According to the method, the real-time temperature of a coil is determined by monitoring the load current and the input voltage of the DC contactor coil in real time, and the dynamic safety voltage upper limit is calculated accordingly; meanwhile, the voltage change rate of the input voltage in unit time is calculated and compared with a preset threshold value to judge the transient pulse threat. Selecting a driving mode based on a judgment result; when the instantaneous pulse threat exists, selecting a voltage-stabilizing current-limiting mode; when no threat exists and the input voltage is higher than the dynamic safety voltage upper limit, a step-down regulation mode is selected; when the input voltage is lower than or equal to the dynamic safety voltage upper limit, the direct connection mode is selected. And executing the selected mode to generate and output a driving signal. The method solves the problem that in the prior art, overpressure stresses with different properties cannot be effectively distinguished and cooperatively coped with, and the intelligent response and protection capability of the driving circuit is improved.

The invention provides a magnetic reed switch and a preparation method thereof, and the preparation method comprises the steps: carrying out the grooving of a nickel-iron wire or a nickel-iron sheet, and obtaining a static reed with one end provided with a first positioning groove; grooving the nickel-iron wire material and welding a hollow pipe to obtain a movable contact spring with a second positioning groove at one end; plating layers are plated on the surfaces of the movable reed and the static reed; metal pieces are welded to the first positioning groove of the static reed and the second positioning groove of the movable reed, and a static reed assembly and a movable reed assembly are obtained respectively; the ends, provided with the metal pieces, of the movable reed assembly and the static reed assembly are packaged in a glass tube, the metal pieces in the movable reed assembly and the static reed assembly are arranged in a non-contact crisscross mode, and finally the magnetic reed switch is manufactured. By additionally arranging the high-melting-point metal pieces which are distributed in the crisscross manner at the end parts of the movable magnetic reed and the static magnetic reed, the magnetic contact area is effectively reduced, the rebounding time of the magnetic reed is shortened, and the ablation of a switching arc to the magnetic reed is reduced.

To prevent liquid sloshing caused by switching a coil to be energized in a transport device. A transport device that transports an object to be transported provided with a magnetic body, the transport device includes: a plurality of coils configured to generate a thrust for transporting the object to be transported; a coil drive unit configured to apply a pulsed voltage to each of the plurality of coils; and a calculation unit. When switching a coil to be energized, the calculation unit determines a width of the pulsed voltage such that a speed or an acceleration of the object to be transported is stabilized based on a position of the object to be transported and a time at which the object to be transported passes through the position or a current flowing through an energized coil in a predetermined period before switching the coil to be energized, and outputs the determined width to the coil drive unit.

The invention discloses a magnetic performance dynamic compensation method of a magnetic latching relay suitable for a wide temperature range environment, and relates to the field of magnetic performance dynamic compensation, and the method comprises the steps: obtaining the real-time temperature data and real-time load voltage data of the relay, outputting a basic driving energy parameter, and obtaining the real-time temperature data of the relay based on the real-time temperature data; constructing a three-dimensional rigidity potential energy curved surface dimension reduction solution equivalent rigidity coefficient, predicting mechanical collision kinetic energy at the moment that a movable contact is closed, generating a critical rebound energy threshold value, constructing an ideal convergence track meeting physical deceleration constraint, executing inverse dynamics solution, generating a composite step driving waveform instruction, and performing dynamic deformation on the composite step driving waveform instruction. A relay coil is driven by executing the composite step driving waveform instruction, the motion state vector of a movable iron core is calculated in real time through a flux linkage observer, mechanical rebound is recognized, active magnetic damping adjustment is triggered, the movable iron core is forcibly clamped in a magnetic maintaining balance area, a movable contact can be forcibly locked at a conduction position, and the magnetic field is controlled. And a false pull-in fault is thoroughly avoided.

The present disclosure provides a control circuit and a control method of a bistable permanent magnet mechanism. The control circuit includes five switches, a diode and a control unit for controlling the five switches to be turned on and turned off. The control circuit enables the positive and the negative of the current passing through the coil to be adjustable at any time and avoids load breaking, without a complicated design of a driving circuit, thereby reducing the cost. It can also realize PWM control, adapt to a larger current range and different bistable permanent magnet mechanisms, and has a wide range of application scenarios.

The embodiment of the utility model provides a charger output anti-reverse connection and anti-reverse charging protection device, and belongs to the technical field of charging safety. The charger output anti-reverse connection and anti-reverse charging protection device comprises a relay arranged at the output end of a charger and used for executing connection / disconnection of a charging loop through actuation / disconnection; the relay is connected with a relay control circuit and is used for controlling the relay to be switched on or switched off along with the voltage state of the charging loop; the detection circuit is connected to the charging loop and used for responding to the voltage state of the charging loop; and the charging loop is also connected with the relay control circuit, and transmits the voltage state to a relay driving module of the relay control circuit in real time. According to the scheme of the utility model, complicated signal judgment is not needed, passive control is realized only by depending on the voltage state, the system complexity is reduced, the protection on the charger and the battery is enhanced, and the service life of equipment is prolonged.

A power system asset may include an individual circuit breaker, a switchgear that may include multiple circuit breakers, or any other asset that may be included in a power system. The system for monitoring and diagnosing these power system assets may include one or more intelligent protection relay and switchgear monitor device(s) that may be communicatively coupled in a master-slave or peer-peer configuration in a time-synchronized manner of operation.

A method comprising: generating, by a peak detector, a comparison signal by comparing a coil current of a relay against a dynamic threshold, the comparison signal having a first value when the coil current is above the dynamic threshold, the comparison signal having a second value when the coil current is below the dynamic threshold, wherein the peak detector is configured to: cause the dynamic threshold to track the coil current until a positive peak in the coil current is reached that has a value PP, and set the dynamic threshold to a rebound value R in response to detecting that a negative peak in the coil current is reached, the rebound value R being based on the value PP; detecting whether the relay is in a faulty state based on the comparison signal; and generating an indication of a fault when the relay is in a faulty state.

The utility model provides a relay switch control circuit and a relay output type PLC controller, and the relay switch control circuit comprises a relay which comprises a coil, a first contact and a second contact, and the coil is used for controlling the opening and closing of the first contact and the second contact; the load loop power supply input terminal is connected with the first contact and is used for being connected with an external power supply through an external load; the load loop power supply common terminal is connected with the second contact and is used for being connected with an external power supply; the voltage division circuit is connected with the load loop power supply input terminal; the isolation circuit is connected with the load loop power supply common terminal; the feedback circuit is respectively connected with the voltage division circuit and the isolation circuit; the external power supply is an alternating current power supply, the first contact and the second contact are closed, and the signal output end of the feedback circuit outputs a first signal; the external power supply is an alternating current power supply, the first contact and the second contact are disconnected, and the signal output end outputs a second signal. According to the utility model, the reliability of AC control is improved.

To provide an on-delay timer which can be used under harsh environment such as an iron mill.SOLUTION: An on-delay timer 1 of the present invention, comprises a CR parallel circuit 2 in which a first relay Ry1 and a resistance R1 are provided in series between a power supply Vcc and a ground, a second relay Ry2 and a normal open switch 3 are provided in series between the power supply Vcc and the ground, which is provided in parallel with the first relay Ry1, and is formed by a capacitor C and a resistance R2. The first relay Ry1 and the CR parallel circuit 2 are connected via a normal closing switch 4. In a condition ON, the normal closing switch 4 becomes On when the first relay Ry1 becomes ON so as to be delayed in a time constant determined by the capacitor C and the resistance R1, and the CR parallel circuit 2 is separated from the first relay Ry1, and the normal open switch 3 becomes ON, and the second relay Ry2 becomes ON.SELECTED DRAWING: Figure 3

The invention relates to a method for fault diagnosis of a switch element (100) which has an electromagnet (101) and a switching piece (104) and which is designed to close or disconnect an electrical connection (109), in which the switching piece (104) is moved by means of a magnetic field of the electromagnet (101), wherein the method comprises the following steps: actuating the switch element (100) using a control signal (111) which influences the magnetic field of the electromagnet (101); and carrying out a fault diagnosis of the switch element (100) by means of an evaluation criterion, which is based on a profile of the control signal (111), which correlates with an arrangement of the switching piece (104) in relation to the electromagnet (101). The invention also relates to a corresponding control device (130) and computer program.

The utility model discloses a zero -crossing detection and power switch control circuit module, include: mains input terminal for connecting alternating current source, set up in the front end of the mains input terminal input side's inhibition network, with zero -crossing detection circuit that the mains input terminal electricity is connected, electronic switch circuit, including second photoelectric coupler and with second photoelectric coupler control end connection's thyristor, mechanical switch circuit, set up in the relay contact both ends's contact inhibition network, including resistance and electric capacity, control circuit, with first photoelectric coupler, second photoelectric coupler with relay's control end electricity is connected, is used for according to zero -crossing detection signal control thyristor and the switch timing of relay. This zero -crossing detection and power switch control circuit module has the characteristics of accurate zero point switch control, low electromagnetic interference, high reliability and long life.

The invention provides a relay failure diagnosis method and a power storage device system. The relay failure diagnosis method is a relay failure diagnosis method for a power storage device system including a plurality of power storage device packs. The relay fault diagnosis method is executed by the controller. The relay fault diagnosis method comprises diagnosis processing and change processing. In the diagnosis process, when the power storage device system is started, faults of relays of some of the plurality of power storage device packs are diagnosed. In the change process, the power storage device pack to be subjected to failure diagnosis is changed.

A relay control apparatus according to an embodiment of the present disclosure includes a processor configured to output a basic control signal for controlling an operation of a relay and a recovery signal having a differential signal level according to a recovery state thereof; a monitoring unit configured to monitor an operation state of the processor and output a decision-control signal having a differential signal level according to the operation state of the processor and a retain signal for maintaining the operation state of the relay; and a relay state determining unit configured to output one of the basic control signal and the retain signal as a relay control signal for controlling on / off of the relay based on the signal level of the decision-control signal or the recovery signal.

A high voltage connector and a power supply apparatus are provided, implementing safety power-off of a device. The high voltage connector includes a first connection part provided with a first power pin module and a first signal pin module, and a second connection part provided with a second power pin module and a second signal pin module. The first connection part is connected to the second connection part in a pluggable manner. A length of a signal pin in the first signal pin module is less than a length of a power pin in the first power pin module. A length of the signal pin in the second signal pin module is less than a length of a power pin in the second power pin module.

The present invention relates to a battery connector. The battery connector (1 ) comprises a voltage conversion and stabilization unit (2), a coupling unit (3) and a contactor (4), wherein the contactor (4) is connected to an output end of a power battery (101 ) via the voltage conversion and stabilization unit (2), and the contactor (4) receives a control signal sent by the battery management system (102) via the coupling unit (3). The present invention further relates to a vehicle battery system (10), comprising a power battery (101 ), a battery management system (102), and the battery connector (1 ) according to the present invention. According to the present invention, the contactor may acquire a stable driving voltage from a high-voltage output end of the power battery, thereby enhancing the robustness of the contactor while avoiding the influence of an impact current generated by the closing of the contactor on the battery management system, enhancing the operational stability of the battery management system, and improving the electromagnetic compatibility of the vehicle power system.

The present invention relates to a method for ending charging and diagnosing switches (13, 14, 15, 16) of a charging system (32) of an electric vehicle (30) comprising a voltage booster (5) having a capacitor (6) connected at the input terminals thereof, and two switches (13, 14) each connected to a separate terminal of a charging socket (8), the method comprising a command to open the switches (13, 14, 15, 16), and if the voltage (VDC) at the terminals of the socket (8) is greater than a safety voltage, and the voltage downstream and upstream of the switches (13, 14, 15, 16) is similar, when the load has used the voltage booster (5) and in the absence of information on the closing of a charging flap, the method comprises discharging the capacitor (6) and then comparing the voltage (VDC) at the terminals of the socket (8) with the voltage (VB) downstream of the switches (13, 14, 15, 16).