1150results 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 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.

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 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 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 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 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 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 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.

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 the field of elevator relay control, in particular to an elevator locking loop control system based on an induction key. The system comprises a mechanical lock cylinder, an executing mechanism, a power supply circuit, a verification module and a storage module which are arranged in an elevator lock body, a corresponding key chip and a fingerprint recognition module are integrated on an induction key, and a main control loop comprises a first DC24V safety power source, a first optical coupler isolation relay K1 and a first double-coil magnetic latching relay KM1. The standby control loop comprises a second DC24V safety power supply, a second time delay relay K2 and a second magnetic latching relay KM2, the loop switching logic controller is used for monitoring the current state corresponding to the main control loop in real time, and when K1 fails, the standby control loop is automatically activated, and a maintenance alarm is given out. According to the invention, absolute execution of the elevator locking action can be ensured through combination of fingerprint verification and electrical interlocking, and the elevator safety standard is ensured to be met.

The utility model discloses a double-coil contactor, and the contactor comprises a power module which is used for accessing an external power supply voltage to generate a DC voltage, so as to enable a coil loop to be electrically conducted, and carrying out the voltage reduction of the DC voltage, and obtaining a power supply voltage; the external power supply is an AC power supply or a DC power supply; the sampling comparison module is used for sampling the direct-current voltage and generating a working voltage according to the power supply voltage when the sampling voltage is greater than a preset voltage threshold value; the driving module is used for controlling the pull-in coil loop to be electrically conducted based on the direct current voltage in response to the power supply voltage and the working voltage, and controlling the pull-in coil loop to be electrically disconnected in response to the trigger signal; the time delay module is used for generating a trigger signal when the duration of electrical conduction of the pull-in coil loop reaches a preset duration. According to the double-coil contactor, the AC voltage of the AC power supply can be converted into the DC voltage for control through the power supply module, and the application range of the double-coil contactor is greatly expanded.

The invention relates to a compatibility module (10) for an electrical circuit (100), comprising: - a module input (11) suitable for being connected to a load output (21) of a load relay (20), - a module output (12) connected to the module input (11), - a reference potential connection (13), - a detector (30) connected to the module input (11) and suitable for detecting a bounce of a load relay (20), - a controllable switch (40) having a switch input (41), a switch output (42) and a switch control input (43), wherein the switch input (41) is connected to the module input (11) and the switch (40) is suitable for being controlled by the detector (30) via the switch control input (43) depending on a detected bounce of a load relay (20), - a load (50) electrically arranged between the switch output (42) and the reference potential terminal (13).

The invention relates to a contactor integrated with a protection switch and a circuit system, the contactor comprises a protection switch, a driving mechanism, a pair of static contact pieces and a movable contact piece which are arranged from top to bottom, and the driving mechanism is used for driving the movable contact piece to connect or disconnect the pair of static contact pieces. The supporting sleeve is provided with a sleeve inner hole extending in the vertical direction, the sliding part is arranged in the sleeve inner hole in a sliding mode, the driving source drives the sliding part to slide, the sliding part extends out of the sleeve inner hole from the lower portion and is connected with a movable contact piece, and the sliding part drives the movable contact piece to move vertically so that the movable contact piece can be connected with or disconnected from a pair of static contact pieces. The protection switch is arranged above the sliding part, and the protection switch is used for being selectively activated to drive the sliding part to slide downwards under the abnormal working condition, so that the movable contact piece is separated from the static contact piece. Compared with an existing contactor with a protection switch arranged at the contact piece end, the contactor provided by the invention is simpler in structure and smaller in size.

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.

An electronic power switching circuit comprising a primary circuit with two conducting rails having a first end and a second end, wherein the conducting rails at the first end are configured to be connected to the two phases of an external AC power supply and a secondary circuit with two conducting rails having a first end and a second end, wherein the conducting rails at the first end are connected to the conducting rails at the second end of the primary circuit via electromechanical relays and interposed between the conducting rails and the conducting rails, respectively, wherein said relays are electrically actuated via a control unit, where the control unit controls the switching of the relays depending on the zero crossing time of the load current and / or the power supply voltage.

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 present invention discloses a small power-off delay circuit, comprising: a voltage conversion circuit unit, an energy storage circuit, a voltage comparison unit, and a delay control unit. A transformer is used to reduce the voltage of high-voltage alternating current and isolate electromagnetic interference, and then a rectifier and filter circuit is used to convert the low-voltage alternating current into low-voltage direct current for subsequent power supply to the circuit. The circuit not only has a power-off delay function for inputting a wide voltage range of 20V to 400V AC, but also solves the problems of lack of electromagnetic interference isolation for the input signal and the large size and high heat generation of the rectifier and filter circuits. The functions of electromagnetic interference isolation of the input signal and circuit miniaturization are achieved. The difficulty of matching the circuit parameter design with the actual transformer conditions is overcome.

The invention relates to the technical field of electronic circuits, and provides a driving circuit for reducing overshoot voltage during switching-on and switching-off of a relay, which comprises an H-bridge driving circuit module and a control module. The H bridge is composed of four MOS tubes, the drain electrodes of the first MOS tube and the third MOS tube are connected with the positive end of a power supply, the source electrodes of the second MOS tube and the fourth MOS tube are grounded, the source electrode of the first MOS tube and the drain electrode of the second MOS tube are connected with the first coil end of the relay, and the source electrode of the third MOS tube and the drain electrode of the fourth MOS tube are connected with the second coil end of the relay. The control module inputs control signals to the grid electrodes of all the MOS tubes, and four working modes of keeping, forward pull-in, reverse pull-in and follow current discharge are achieved. The action stability of the relay can be improved, the service life of the relay can be prolonged, and circuit energy consumption and electromagnetic interference are reduced.

An in-vehicle control device (10) includes a determination unit (11) that determines whether or not a target contactor (21) for connecting and disconnecting a high-voltage circuit of a battery (2) installed in a vehicle is likely to have sticking after the high-voltage circuit is used; and a vibration control unit (13) that performs a vibration control including a target vibration control to repeatedly turn on and off the target contactor (21) when the determination unit (11) determines that the target contactor (21) is likely to have sticking, whereby attempt to remove a transient short circuiting of the target contactor.