95results about "Relays" patented technology

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 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.

A semiconductor device includes: a first semiconductor relay and a second semiconductor relay connected in parallel with each other; an input switching circuit that switches a path of a signal input to the first and second semiconductor relays; an output switching circuit that switches a path of a signal output from the first and second semiconductor relays; and a monitoring section that performs abnormality detection and warning of the first and second semiconductor relays. Also, either of a redundant mode and a non-redundant mode is executed in correspondence with a first setting signal from the outside, in the redundant mode, the input switching circuit is controlled in a manner that inputs of the first and second semiconductor relays are shared, and the output switching circuit is controlled in a manner that only one of the first and second semiconductor relays is output, in the non-redundant mode, the input switching circuit and the output switching circuit are controlled in a manner that inputs and outputs of the first and second semiconductor relays are different, respectively.

The invention relates to a method for fault diagnosis of a switching element (100) which has an electromagnet (101) and a switching piece (104) and which is configured to close or open an electrical connection (109) by moving the switching piece (104) by means of a magnetic field of the electromagnet (101).The method comprises the following steps: (i) opening or closing the switching element (100) by means of a control circuit (111), wherein the control circuit (111) includes a resistor (126) and a coil (102) of the electromagnet (101), the resistor (126) and the coil (102) being connected in parallel in the control circuit (111); (ii) performing a fault diagnosis of the switching element (100) by means of an evaluation criterion which takes into account the current (Ic) through the resistor (126) and / or the voltage (Uc) applied across the resistor (126) in response to the actuation of the switching element (100). The invention further relates to a corresponding control unit (130) and a computer program.

The application discloses a relay driving circuit, comprising a power module, a starting switch, a main control module and a switch module, the power module is used for providing stable working voltage for the system, the starting switch is used for outputting a starting signal of the relay, a control signal input end of the main control module is connected with the starting switch, the main control module is used for outputting a corresponding pulse driving signal according to the starting signal, an input end of the switch module is connected with a control signal output end of the main control module, an output end of the switch module is electrically connected with the relay, and the switch module is used for driving the relay to work according to the pulse driving signal. The switch module of the application can drive the relay to work according to the pulse driving signal, compared with the traditional relay directly driven by the switch, when the program of the main control module runs out of control or crashes, the pulse driving signal will stop outputting, thereby stopping driving the relay and making the load stop working, and further preventing the household appliance from burning or the occurrence of safety accidents.

The switchgear (1) comprises a main circuit (10) that switches a three-phase system on and off with three contacts, an operating circuit (11) that performs electromagnetic operation of the contacts using an operating voltage used when operating the main circuit (10), and a control unit (2) that controls the operating circuit (11) by changing the operating voltage selected from a combination of operating voltages each time the circuit is closed, based on a control pattern in which a combination of operating voltages is set such that the amount of contact wear for each contact is statistically equalized when the opening and closing of the contacts is repeated.

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; 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.

The utility model relates to a kind of magnetic latching relay base anti-deformation processing device, including workbench, and the upper end of workbench is equipped with electric turntable, and the upper end of electric turntable is arranged with multiple product stations around circumference, and each product station includes at least four anti-deformation mould seats, and the upper end of workbench is sequentially provided with downer, material taking device and multiple cooling fans around circumference above electric turntable, and the downer includes down cylinder and down plate, and the upper end of workbench is equipped with down cylinder above electric turntable, and down cylinder lower end is connected with down plate, and the upper end of workbench is provided with upper lifting device below material taking device, and upper lifting device is below electric turntable, and the upper end of workbench is equipped with upper lifting cylinder below electric turntable, and down cylinder lower end is connected with upper lifting plate. The utility model can realize magnetic latching relay base cooling and shaping, and processing efficiency is higher.

This utility model discloses a three-phase four-wire smart power switch, including a neutral wire module as the main unit, and A-phase, B-phase, and C-phase modules as slave units. The neutral wire module, A-phase module, B-phase module, and C-phase module are interconnected through two sets of pin headers. The main unit includes a main unit CPU and a WIFI module, a main unit sampling module, a drive module, and a power supply module electrically connected to the main unit CPU. The main unit CPU is used to control and process data, operate relays, and handle faults or abnormal actions. The WIFI module is electrically connected to the main unit CPU and is used to exchange data with external devices. The sampling module is used to collect current and voltage signals flowing through each phase and transmit zero-crossing signals and overcurrent signals to the main unit CPU via interruption. The drive module is used for magnetic latching relay control. The power supply module is used to provide 12V operating power to the main unit and slave units.

This invention relates to the field of traffic information engineering and control technology, and is a parallel dual-master redundancy switching system for track electronic actuators and its implementation method. The system includes a Series I track electronic actuator, a Series II track electronic actuator, and a wiring backplane. Both Series I and Series II track electronic actuators are plugged into the wiring backplane. By setting up a parallel dual-master redundancy switching system for Series I and Series II track electronic actuators, the track status information collected by both systems is the same when the two systems collect current, ensuring consistency. Moreover, the parallel dual-master redundancy switching system has the same matching impedance and consistent acquisition circuit parameters under different operating states such as dual-system and single-system (except when both systems are faulty), eliminating the problem of asynchronous states between the two systems after impedance matching, and reducing the influencing factors on the acquisition of track section status.

The application provides a switching device, a power conversion device, an energy storage system and a grid-connected control method. In the switching device, a first end of a coil of a relay is connected to a first power supply voltage, a second end of the coil is connected to ground through a first driving switch tube and a bootstrap resistor connected in series, and the bootstrap resistor is connected to a second power supply voltage through a second driving switch tube. The first driving switch tube is used for being turned on when a driving signal is received. The second driving switch tube is used for being turned on when the second power supply voltage is connected and the first driving switch tube is turned on, so that the voltage of the bootstrap resistor is the second power supply voltage, and the voltage of the bootstrap capacitor relative to the ground can reach the sum of the first power supply voltage and the second power supply voltage, thereby the contact attraction speed can be accelerated, and the relay can be closed at a voltage zero-crossing point.

In various embodiments, a method for operating a contactor (S3, S4) is provided, comprising: adjusting the switching current flowing through the contactor (S3, S4) during the switching process to a regeneration value that is greater than the switching current during regular operation of the contactor (S3, S4). Furthermore, an electrical operating environment with a contactor is provided.

This utility model discloses a relay disconnection delay circuit, belonging to the technical field of new energy vehicle control circuits. The relay disconnection delay circuit includes a first circuit, a second circuit, and a third circuit. The delay circuit is composed of common components such as resistors, capacitors, transistors, and MOSFETs, eliminating the need for dedicated chips to achieve the relay delay disconnection function, thus reducing design costs. Furthermore, the delay time can be controlled based on the values ​​of resistor R6 and capacitor C1.

A relay control device according to one embodiment of the present invention includes a processor configured to output a basic control signal for controlling the operation of a relay; a monitoring unit configured to monitor the operating state of the processor and output a decision control signal having a signal level such as a difference, and a retain signal for maintaining the operating state of the relay, depending on the operating state of the processor; and a relay state determination unit configured to output either the basic control signal or the retain signal as a relay control signal for controlling the on / off state of the relay, based on the signal level of the decision control signal.

The application discloses a control method, system and device of a low-voltage power source spare automatic throw-in. The method comprises the following steps: determining the load-carrying state of the incoming line side of a working power source switch, the electrified state of a power bus section and the electrified state of the incoming line side of a spare power source switch; when the working power source switch is closed, the spare power source switch is opened and the power bus section is electrified, controlling the first time relay to be powered on; when the spare power source switch is opened, the incoming line side of the spare power source switch is electrified, the incoming line side of the working power source switch is not loaded, the power bus section is not electrified and the first time relay is powered on for a certain time, controlling the second time relay and the third time relay to be powered on; when the working power source switch is closed and the second time relay is powered on for a certain time, controlling the working power source switch to be opened by using the tripping coil of the working power source switch; and when the working power source is opened and the third time relay is powered on for a certain time, controlling the spare power source switch to be closed by using the closing coil of the spare power source switch.

This utility model discloses a stamping device, relating to the field of relay processing technology. The stamping device, used to mount a relay frame, includes a base, a pressure plate, and a punch. The base has a movable clamping seat for clamping the relay body. The pressure plate is movably mounted on the base and moves along a direction perpendicular to the base. The punch is located on the side of the pressure plate facing the base and can move closer to or further away from the clamping seat. In the technical solution provided by this utility model, the pressure plate drives the punch to descend and stamp the portion of the lower iron frame located above the upper iron frame. This causes the structure to deform upon impact, thereby pressing the hole that mates with the upper iron frame, thus achieving the installation of the upper and lower iron frames. This avoids the problems of surface blackening and gaps between iron frames, which can easily lead to magnetic leakage, that can occur with laser welding.

A relay delay turn-off circuit and a relay control method. The relay delay turn-off circuit includes a power control chip (1) outputting a first safety signal, a micro-control chip (2) outputting a second safety signal and a control group signal, a delay module (3), and a relay driving module (4). The delay module (3) receives the first safety signal, the second safety signal, and the control group signal, and outputs a first enable signal (EN1), a second enable signal (EN2), and a safety status signal. When the micro-control chip (2) resets, the first enable signal (EN1) delays a turn-off action of the relay driving module (4) until after a preset time, which is greater than a reset time. The power control chip (1) and the micro-control chip (2) output the first safety signal and the second safety signal according to their respective safety states.

The utility model relates to relay packaging equipment's technical field, and particularly relates to a relay heat sealing device, and it is fixed to relay when heat sealing through the setting clamping device, and the heat sealing quality is promoted, including the fuselage, still including rotating device, clamping device, heat sealing device and conveyer, and rotating device and heat sealing device all install on the fuselage, and clamping device installs on rotating device, and conveyer installs on heat sealing device, the fuselage provides support, and rotating device drives clamping device to rotate, and clamping device clamps relay, and heat sealing device heat seals relay, and conveyer conveys welding wire.

The present invention discloses a contactor detection circuit. The contactor detection circuit comprises: a comparator; a reference voltage generation circuit, whose output end is connected to the inverting input end of the comparator, for inputting a reference voltage V1 to the inverting input end of the comparator; a sampling circuit electrically connected to two static contacts of a contactor and its output end connected to the in-phase input end of the comparator, for inputting a sampling voltage V2 to the in-phase input end of the comparator; and a waveform generator, whose output end is connected to the input end of the sampling circuit, is used to input a periodically changing voltage signal V3 to the sampling circuit. When the contactor is in an open state, the sampling voltage V2 output by the sampling circuit is a periodic waveform, causing the comparator to output a periodic square wave signal; when the contactor is in a closed state, the sampling voltage V2 output by the sampling circuit is higher than the reference voltage V1, causing the comparator to output a high level. The present invention does not require the use of isolated power supplies and isolated operational amplifiers, nor does it require the use of MCUs or the development of specialized software, greatly reducing costs.

The utility model relates to a time relay of delay type for railway locomotive, including casing, is equipped with wiring terminal on casing, wherein, wiring terminal includes trigger terminal, output terminal and power terminal, the inside of casing is equipped with treater, and treater is connected with trigger signal input circuit, power supply circuit and drive circuit, trigger terminal connects trigger signal input circuit, and the signal output end of trigger signal input circuit is connected with the signal input end of treater, power terminal connects power supply circuit, and provides power supply through power supply circuit, the signal output end of drive circuit connects treater, and drive circuit connects output terminal, the utility model discloses through using controller to receive relay trigger signal, uses controller to the signal of relay to delay, guarantees the accuracy of delay time, and delay time is easy to adjust, convenient to use, in addition, the device realizes the use of integration, and when using, only need to connect corresponding wiring terminal.

The application discloses a high-low temperature self-adaptive optimization control system for a relay, comprising: a multi-modal perception module, which collects temperature, current, voltage and environmental temperature and humidity signals of the relay in real time; a perception fusion module, which fuses and processes multi-source signals to generate a feature tensor; a digital twin prediction module, which predicts performance drift parameters in a future period based on a digital twin model fused with a physical model and a data model; a reinforcement learning decision module, which takes the current state and performance prediction as input and generates an optimized control instruction through a multi-objective reinforcement learning model; a collaborative execution module, which executes the instruction to adjust driving parameters or control modes; and a closed-loop feedback module, which collects actual performance data and compares them with predicted values to dynamically correct the digital twin model. The application realizes forward-looking prediction and multi-objective dynamic optimization control of the relay performance, and significantly improves the action reliability, energy efficiency and service life of the relay in a wide temperature range.

The application relates to a relay delay power-off circuit and an electric vehicle, and relates to the technical field of power electronics. The circuit comprises a first controllable switch, a switching circuit, a delay circuit and a voltage comparison circuit. The first controllable switch is connected with a first relay in series. The second end of the delay circuit is connected with the voltage comparison circuit, and the delay circuit is used for outputting a first voltage to the voltage comparison circuit. The delay circuit comprises a first capacitor. The switching circuit is used for charging the first capacitor by a power supply when the input port of the LSD is grounded, and is used for disconnecting the loop between the power supply and the first capacitor to make the first capacitor discharge when the input port of the LSD is disconnected with the ground. The voltage comparison circuit controls the opening and closing of the controllable switch when the first voltage is greater than or equal to a reference voltage, so that the first relay is attracted; and the voltage comparison circuit controls the first controllable switch to be disconnected when the first voltage is less than the reference voltage, so that the first relay is powered off. The scheme can control the relays to be disconnected in turn according to the sequence, and ensures that the high-voltage line of the electric vehicle can be normally cut off.

This application relates to a water heater power supply circuit and an electric water heater, belonging to the field of water heater technology. The water heater power supply circuit includes: a contactor, a control module, and a power supply module; wherein: the contactor is used to switch different power supplies; the control module includes: a microcontroller, a switching transistor, and a relay. The contactor's electromagnetic coil and the relay are connected in series and then connected to the power supply module. The relay's control coil and the switching transistor are connected in series and then connected to the power supply module. The control terminal of the switching transistor is connected to the microcontroller, and the microcontroller is connected to the power supply module. Because the contactor's electromagnetic coil and the relay are connected in series and then connected to the power supply module, the on / off state of the relay affects the on / off state of the contactor's electromagnetic coil and the power supply module, thereby affecting the energization state of the contactor's electromagnetic coil. The contactor's electromagnetic coil switches different power supplies under different energization states, thus completing the switching of the water heater's power supply mode.

The utility model discloses a normally closed emergency cut-off electromagnetic valve, including switch module, shell module and circuit module, the switch module includes fixed unit, action unit and auxiliary opening unit. The utility model discloses a normally closed emergency cut-off electromagnetic valve, through fixed unit and action unit link together to close the electromagnetic valve automatically, and through the recess part and steel ball to limit when closing or opening, keep structural stability, when opening manually through auxiliary opening unit and open fastly, and it through power supply circuit, first power supply circuit and second power supply circuit link together, through the capacitor discharge to the coil power supply when power failure, thereby realize the emergency cut-off when power failure, it has practicality high, security high and wide application range etc.

A contactor apparatus (30) and method for operating the contactor apparatus (30) can include a contactor assembly (32) with a contactor coil (42) operably coupled to a contactor switch (40). One or more sensors (70) can be provided in the contactor assembly (32) adapted to measure one or more aspects of the contactor assembly (32). Based upon the measured aspects, a controller (60) can initiate operation of the contactor switch (40) to effectively toggle the contactor switch (40) at a zero-crossing point (94) along an alternating current waveform (92).

The invention relates to a relay diagnostic device. The relay diagnosis device is not actually connected with a relay, and diagnoses whether a cut-off line is valid in a state that the relay is cut off. A relay diagnostic device is included in a vehicle power supply system including: a relay attached to a power line closer to a battery than a smoothing capacitor; a driver that drives the relay; a first control unit; a second control unit which receives the instruction of the first control unit and outputs a driving signal to a driver; and a cut-off line that directly cuts off the relay by the first control unit prior to a drive signal from the second control unit to the driver. The first control unit outputs a disconnection command of the relay to the second control unit at the end of the system, sets the state of the disconnection line to the disconnection side after performing a welding diagnosis of the relay on the basis of the presence or absence of a voltage drop in the smoothing capacitor, and outputs a connection command of the relay to the second control unit. The output state of the driver is monitored to diagnose whether the cutoff line is valid.

The application provides a relay control method, system and medium based on different attraction and holding voltages. First, in response to the level switching of a control input signal, whether to output an attraction voltage is determined by judging the relationship between the voltage of a first node and a preset threshold. Then, the duration information of the voltage of a third node is obtained, and a high-voltage attraction instruction is triggered when the duration information exceeds a preset time threshold. Next, the output level of a fifth node is controlled by judging the voltage state of a fourth node, so as to orderly disconnect the holding control module. Finally, the voltage of a seventh node is continuously monitored, and when the voltage deviates from a preset threshold range, a holding voltage is automatically output and the time parameter is reset, and the high-voltage attraction process is reentered. Through the synergistic effect of multi-stage voltage judgment and timing control, the application realizes the automatic switching between high-voltage driving in the attraction stage and low-voltage maintenance in the holding stage of the relay, effectively improving the reliability and adaptability of the relay action.