1531results 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.

Magnetic coupling devices are disclosed having magnetic field sensors. The magnetic coupling device may include degaussing coils wrapped about pole extension shoes of the magnetic coupling device.

The automatic relay assembling machine comprises a rotary table mechanism, a gasket feeding and transferring mechanism, a material taking and code scanning mechanism and a marking and pressing mechanism, and the rotary table mechanism is arranged on a machine table and comprises a rotary table, a rotary table divider and a material taking assembly; the turntable is rotatably arranged on the machine table; the turntable divider is arranged below the turntable; the material taking assembly is arranged on the turntable; at least two assembling stations are arranged on the turntable mechanism and are used for clamping and placing the relay assembly; the material taking and code scanning mechanism is arranged at the code scanning pre-assembly station; the marking and pressing mechanism is arranged at the marking and assembling station; the gasket feeding and transferring mechanism comprises a gasket feeding assembly and a gasket transferring assembly. And the marking and pressing mechanism is arranged on the side part of the turntable. According to the automatic assembling machine, automatic independent feeding, marking and gasket installing, code scanning and pre-assembling, secondary marking and press-fit assembling of the relay core and the shell are achieved by combining the parallel double discharging positions and the multiple assembling stations, and the assembling efficiency is effectively improved.

A load switching circuit includes a supply power availability (SPA) detector, a rail voltage detector, a swell detector, a surge detector, control logic, make and break timers, and a relay driver. The detectors detect various conditions, and generate signals in response to some detected conditions. The control logic is configured to: (1) release a relay within 300 ms after receiving a power-up signal; (2) start the make timer upon receiving a “rail voltage present” signal and wait for a first delay time, then operate the relay; (3) start the break timer upon receiving a “swell detected” signal to wait for a second delay time, then release the relay; (4) cause a shunt switch to conduct within 10 ms after receiving a “surge detected” signal; and (5) release the relay within 10 ms after receiving a “rail fail” signal.

The invention discloses a relay control circuit and a fault detection method, the relay control circuit comprises a plurality of input terminals connected with alternating current input and a plurality of output terminals connected with a converter, and the number of the input terminals is different from that of the output terminals; a plurality of switching units are arranged between the input terminal and the output terminal, and the switching units can switch the connection state of the input terminal and the output terminal; the relay control circuit has a plurality of operation modes, and under different operation modes, the connection states of the input terminal and the output terminal are different. Compared with the prior art, switching among multiple modes can be achieved through control of the switching unit, meanwhile, the corresponding voltage sampling module is matched, the fault state of the relay control circuit can be judged, a corresponding protection strategy is executed, and the reliability of the relay control circuit is improved.

The utility model relates to an electrolytic capacitor energy storage type relay driving circuit for an electricity meter and terminal equipment. The electrolytic capacitor energy storage type relay driving circuit comprises a processing unit, an electrolytic capacitor energy storage unit, a driving unit and an electric pull-in relay, the input end of the electrolytic capacitor energy storage unit is used for being connected with a power supply end; a first input end of the driving unit is connected with the electrolytic capacitor energy storage unit or the power supply end, and a second input end and a third input end of the driving unit are in communication connection with the processing unit; the first input end of the electric pull-on relay is connected with the first output end of the driving unit to indirectly conduct the first input end, the second input end and the third input end of the driving unit; the second input end of the electric pull-on relay is connected with the second output end of the driving unit to indirectly conduct the first input end, the second input end and the third input end of the driving unit, and the output end of the electric pull-on relay is used for being connected with a load circuit. The utility model solves the problems of high energy consumption and low response speed.

The invention relates to the field of charging pile relay control, in particular to a relay control method for a charging pile. An output signal of the chip U1 and a control signal sent by a controller are operated through an OR gate circuit composed of diodes, as long as one of the two signals is high, a control signal of a third intermediate relay K10 is in a high level, the third intermediate relay K10 acts, a relay for controlling power scheduling cannot be closed, and power scheduling cannot be carried out; only when the two input signals of the chip U1 are both low, the output is low level, and the relay for dispatching the power can be closed, that is, only when one trolley is charged and the dispatching power is required, the relay for dispatching the power is allowed to be closed. Therefore, the accuracy and the reliability of the action of the relay are ensured from two aspects of signal control and relay connection.

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 an energy storage PCS alternating current relay power supply switching circuit, a control circuit and a method, and belongs to the technical field of energy storage converters. Wherein the power supply switching circuit is used for reducing the maintaining voltage while maintaining reliable closing of the relay, and on / off of the first field effect transistor Q2 and the second field effect transistor Q3 is based on the state of the switching tube Q1; the first field effect transistor Q2 controls the state of the Zener diode ZD1 through state switching and is used for controlling the potential of one end of the coil when the alternating current relay is in the pull-in and holding state. And the main control module is used for outputting an alternating-current relay control signal and controlling the power supply switching circuit. According to the power supply switching circuit, reliable closing of the alternating-current relay is ensured, and meanwhile, the maintaining voltage of the coil is reduced, so that the power supply loss of the alternating-current relay is reduced; and meanwhile, load impact current and impact voltage during actuation of the alternating-current relay are reduced through a control method, so that adhesion of the alternating-current relay and interference on voltage of a power supply are avoided.

The utility model provides automatic relay riveting equipment, which comprises a turntable, and a feeding mechanism, a feeding mechanism, a rivet pressing mechanism and a discharging mechanism which are sequentially arranged around the turntable in a surrounding manner, a plurality of station seats are arranged on the turntable at equal intervals, the feeding mechanism conveys external relays to the station seats through a first clamping jaw group, and the discharging mechanism conveys the external relays to the station seats through a second clamping jaw group. The rotating disc is used for driving the station base to rotate, the feeding mechanism clamps the movable spring terminal to the relay through the second clamping jaw set, and the pressing riveting mechanism is used for pressing and riveting the movable spring terminal to the relay. According to the automatic relay riveting equipment provided by the utility model, the station seat is driven to rotate through the turntable, so that mechanisms on each station can sequentially and automatically complete relay feeding, movable spring terminal placing, rivet pressing and other work on the station seat, and after rivet pressing is completed, finished workpieces can be conveyed to an external material box through the discharging mechanism, so that the automatic relay riveting equipment is convenient to operate. The equipment does not need manual operation and feeding and discharging in the whole process, the production efficiency is improved, and the safety is higher.

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 provides an intelligent three-phase contactor. Comprising a processor, the processor is connected with a power conversion circuit, and the processor is connected with a tripping interface, a reconnection port, a drive control circuit and a health monitoring circuit through I / O ports and connected with an AD acquisition chip through an SPI port; the driving control circuit and the health monitoring circuit are respectively connected with a three-phase alternating current contactor through a current sensor and an optocoupler, and the AD acquisition chip respectively acquires three-phase voltage and current of the three-phase alternating current contactor through three voltage acquisition circuits and three current acquisition circuits. In the switching-on process of the contactor, the processor can monitor the voltage of the contactor, and when the voltage exceeds the limit, the driving controller circuit is controlled to disconnect the contactor, so that overvoltage and undervoltage protection is realized, and the contactor load is effectively prevented from being damaged due to unstable voltage. Moreover, the contactor can be connected with external equipment, and the working states of the contactor, such as voltage, current and frequency, can be displayed through the external equipment.

The present application discloses an automatic riveting and spring-loading machine, which relates to the technical field of relay assembly. It includes a frame, on which a rotating mechanism is arranged. The rotating mechanism is provided with a number of positioning components for placing yokes and springs. On one side of the rotating mechanism of the frame, there are two conveying mechanisms respectively for conveying yokes and springs to the positioning components. Between the conveying mechanisms of the frame, there is a downward pressing component for fixing the yokes in the positioning components. On the side of the frame far from the conveying mechanisms, there is a riveting component for riveting the yokes and springs. The positioning component rotates to the lower part of the conveying mechanism to place the yoke, and the yoke is fixed by the downward pressing component. The spring is placed above the yoke and connected to the yoke by the conveying mechanism for conveying the spring. As the rotating mechanism continues to rotate, the positioning component is moved to the lower part of the riveting component to rivet the spring and the yoke, improving the riveting efficiency of the yoke and the spring and reducing the possibility of deformation and separation of the yoke and the spring after riveting.

The invention discloses a fault information holding circuit, a fault information monitoring system and an energy storage system. The fault information holding circuit comprises a magnetic latching relay, an instruction input circuit and an energy storage device. Wherein the energy storage device is responsible for providing energy required by action for the magnetic latching relay under the condition that a target power supply loses power, the instruction input circuit is responsible for generating a control signal aiming at the magnetic latching relay according to a fault signal of the target power supply, and the magnetic latching relay is responsible for switching an opening state and a closing state according to the control signal. A long-term reliable fault signal holding function is realized by converting a power supply fault signal from an electric signal to a magnetic signal, and the upper-level sampling time is not limited, so that the acquisition requirement can be effectively met.

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 linear electrical machine including a frame with a level reference plane, an array of electromagnets connected to the frame and coupled to an alternating current power source energizing each electromagnet, at least one reaction platen of paramagnetic, diamagnetic, or non-magnetic conductive material disposed to cooperate with the electromagnets of the array of electromagnets so that excitation of the electromagnets with alternating current generates levitation and propulsion forces against the reaction platen that controllably levitate and propel the reaction platen along at least one drive line, in a controlled attitude relative to the drive plane, and a controller operably coupled to the array of electromagnets and the alternating current power source and configured so as to sequentially excite the electromagnets with multiphase alternating current with a predetermined excitation characteristic so that each reaction platen is levitated and propelled with up to six degrees of freedom.

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.

A rotor rotator and rotor system for a multi-pole electrical rotary battery switch having a rotor with a top surface and a bottom surface and a key insert opening on the top surface. One or two bus plate connectors are held in chambers on the bottom surface of the rotor. A rotor rotator has a servo motor with a motor gear in the rotor rotator, a switch nob connector at a top end of the rotor rotator, and a rotor key shaft at a bottom end of the rotor rotator which inserts into the key insert opening of the rotor. A programmable printed circuit board with a processor and memory are positioned around the rotor rotator and provide electrical current to the servo motor. Electrical connector poles provide electrical current to the printed circuit board by means of electrical conducting springs. The switch operates both automatically and manually.

The embodiment of the invention discloses a DC contactor coil reverse electromotive force suppression circuit and a control method thereof. The method comprises a power supply circuit; the starting coil control circuit is used for controlling starting or power loss of the starting coil; the holding coil control circuit is used for controlling starting or power loss of the holding coil; the detection circuit is used for detecting voltage and current in the direct-current contactor coil reverse electromotive force suppression circuit and the contact state of the direct-current contactor; the single-chip microcomputer is used for controlling the starting coil control circuit and the holding coil control circuit to work according to the detection result of the detection circuit, and controlling the starting coil to start reversely when the holding coil loses power so as to suppress the reverse electromotive force of the holding coil until the contact of the direct current contactor is released successfully. Through the above mode, the embodiment of the invention can counteract the electromagnetic force generated by the holding coil when the fly-wheel diode conducts the residual current by multiplexing the starting coil to add the reverse voltage at the moment of opening, so that the opening is more reliable, and the opening time is shortened.

The invention relates to a relay pull-in self-learning method and circuit, and the method comprises the steps: collecting a front-end voltage value connected to the front end of a relay conduction path and a rear-end voltage value connected to the rear end of the relay conduction path, so as to calculate and generate corresponding voltage change information, judging whether the voltage change information meets a pull-in condition for determining that the relay is pulled in or not; if the pull-in condition is met, the time offset of the current actual pull-in moment of the relay relative to the alternating current zero crossing point is calculated according to the voltage change information; according to the time offset, the next actuation control signal sending moment of the relay is corrected in advance, so that the time difference between the next actual actuation moment of the relay and the alternating current zero crossing point meets the set offset threshold condition, and the actuation state of the relay is sensed in real time; therefore, the relay is closed at the moment closer to the alternating current zero crossing point, the impact current is effectively reduced, and the service life of the relay is prolonged.

In a case where a load current flows in an energized state where a power supply is connected to a load, it is assumed that a measured voltage fluctuates due to a voltage drop caused by contact resistance of a relay contact, and thus the relay state cannot be accurately diagnosed. A relay control device that controls a relay connected between a secondary battery and a load device calculates, in a failure diagnosis during energization with the relay being closed, a contact resistance value of the relay based on a voltage applied to the relay and a current flowing through the secondary battery, and determines a first threshold set as a variable value in accordance with a temperature change amount of the relay and compares the calculated contact resistance value with the first threshold to diagnose a failure of the relay.

Provided is an electronic device and method for controlling the same, which controls an operation by detecting a voltage between a plurality of live terminals and thus determining whether there is an error in supplying power through a power input terminal. According to an embodiment, an electronic device includes a power input terminal including a plurality of live terminals and a neutral terminal; a voltage detection circuit connected between the plurality of live terminals for detecting a voltage between the plurality of live terminals; and a controller configured to control operation of the electronic device to be interrupted in response to a magnitude of the voltage between the plurality of live terminals smaller than a threshold.

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 invention discloses a relay delay turn-off circuit and a relay control method. The relay delay turn-off circuit comprises a power supply control chip, a micro-control chip, a delay module and a relay driving module. The power supply control chip outputs a first safety signal, the micro-control chip outputs a second safety signal and a control group signal, and the delay module receives the first safety signal, the second safety signal and the control group signal and outputs a first enable signal, a second enable signal and a safety state signal; when the micro-control chip is reset, the first enable signal delays the turn-off action of the relay driving module to preset time and then executes the turn-off action, and the preset time is longer than the reset time of the micro-control chip; and the power supply control chip and the micro-control chip output a first safety signal and a second safety signal according to respective safety states, so that the safety of the delay turn-off circuit of the relay is improved through double safety state judgment.

The embodiment of the invention provides a training data generation method, and the method comprises the steps: obtaining the rotation angular displacement data of a main shaft of a circuit breaker according to a time sequence in each switching-off / switching-on process of multiple switching-on and switching-off of a contact of the circuit breaker; converting the rotation angular displacement data of the main shaft according to the time sequence into linear displacement data of a contact according to the time sequence to obtain first time sequence data; acquiring a control signal in the circuit breaker; converting the first time sequence data from analog quantity to digital quantity to obtain second time sequence data; performing filtering fusion processing on the second time sequence data by adopting a preset filtering fusion algorithm to obtain third time sequence data; calibrating the third time sequence data according to a control signal in the circuit breaker to obtain fourth time sequence data; and according to a preset classification rule, marking corresponding classification labels on the multiple groups of fourth time sequence data.

The invention provides a motor controller for realizing fault isolation, a distributed power assembly and a vehicle. The motor controller comprises a three-phase bridge arm, a direct current breaker, an alternating current breaker and a control device. Wherein the two ends of the three-phase bridge arm are used for being connected with a power battery through a direct-current bus, and the middle point of each phase of bridge arm in the three-phase bridge arm is used for being connected with a phase winding of the driving motor. The control devices are used for connecting the direct-current driving module and the alternating-current driving module through internal lines, and one control device is used for controlling the direct-current driving module to drive the direct-current breaking module to connect or disconnect the connection between the three-phase bridge arm and the direct-current bus; and the control module is used for controlling the alternating current driving module to drive the alternating current breaking module to connect or disconnect the bridge arm midpoints of the at least two phases of bridge arms and the at least two phases of windings, so that faults of the power assembly can be isolated, normal operation of other electric parts of the electric vehicle is guaranteed, and the safety throwing rate of the vehicle is reduced.

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.

A relay drive module, an air conditioner drive circuit, and an electrical device. The relay drive module comprises: a first driving sub-circuit, comprising a first driving terminal and a first preset power supply, wherein the first driving sub-circuit is connected to a control coil of a relay, and is configured to: when the first driving terminal receives a first enable signal, supply the first preset power supply to the control coil, so as to drive contacts of the relay to pull in; and a second driving sub-circuit, comprising a second driving terminal and a second preset power supply, wherein the second driving sub-circuit is connected to the first driving sub-circuit via a clamping sub-circuit, and the second driving sub-circuit is configured to: when the first driving terminal is disconnected and the second driving terminal receives a second enable signal, supply the second preset power supply to the control coil, so as to control the contacts of the relay to remain in a pulled-in state. Two power supplies are used to drive a relay, so that the holding voltage of the relay is less than the pull-in voltage, thereby reducing the driving power consumption of the relay while reducing heat generation of the relay body.

An abnormality detection device includes: an acquisition unit configured to acquire a state of a relay that is connected to an instrument to be monitored and controls opening and closing of a circuit to which the instrument is connected; a detector configured to detect an abnormality of the instrument on the basis of the state of the relay or a change in the state of the relay; and a notifying unit configured to notify a user of the abnormality detected by the detector.