2097 results about "Contactor" patented technology

The invention relates to the technical field of power systems, and discloses a voltage regulation system of reactive power compensation equipment, which is characterized in that harmonic interference is filtered and eliminated through a voltage reactive power sensing unit, and accurate power grid parameters are acquired; a load trend pre-judgment unit analyzes the historical load curve and the real-time change trend to generate a future pre-judgment signal; the dynamic compensation calculation unit combines the current power grid state with the prediction to calculate the optimal compensation capacity and generate a switching instruction, after the hybrid switching actuator receives the instruction, a thyristor is triggered firstly to realize inrush current-free conduction, a contactor is switched to maintain low power consumption after the current is stable, and meanwhile, the compensation state monitoring unit performs closed-loop adjustment on parameter deviation, so that the optimal compensation capacity is obtained. The multi-dimensional protection unit prevents overvoltage, overcurrent and overheating, the double-path power supply guarantees continuous operation when the main power supply is abnormal, the intelligent communication unit realizes data uploading and remote cooperation, quick response switching of reactive compensation equipment and guarantee of safety of a large-scale power grid are realized, and inrush current impact in the switching process is effectively inhibited.

A light detection apparatus according to an embodiment of the present disclosure includes a semiconductor substrate, a light receiver, a trench, a multiplier that is a first electrically-conductive type, and a contactor. The semiconductor substrate has a first surface and a second surface facing each other, and has a pixel array in which a plurality of pixels is disposed into an array shape in an in-plane direction. The light receiver is provided inside the semiconductor substrate for each of the pixels, and generates, through photoelectric conversion, carriers in accordance with an amount of light received. The trench is provided, for each of the pixels, to the first surface of the semiconductor substrate. The multiplier that is the first electrically-conductive type is provided to a bottom surface of the trench, and allows the carriers generated in the light receiver to undergo avalanche multiplication. The contactor includes an electrically-conductive material buried in the trench, and is in contact with the multiplier.

The invention discloses an energy storage system and a parallel operation control method thereof. The system comprises a battery cluster, a battery management system and an energy storage converter. The battery management system is respectively connected with the battery clusters and the energy storage converter, and the plurality of battery clusters are connected with the energy storage converter through the coupling circuit. Wherein a pre-charging equalization loop is arranged between the battery cluster and the energy storage converter, and the battery management system is used for controlling connection or disconnection of a circuit. The battery management system is also provided with a threshold module which is integrated with a plurality of parallel operation thresholds and is used for judging the switching-on or switching-off time of the contactor. By constructing a coupling system containing a pre-charging equalization loop, the problems of impact current and device damage caused by large inter-cluster voltage difference in the parallel operation process of a traditional multi-battery energy storage system are solved; and meanwhile, through a strategy of setting multiple parallel operation threshold values, targeted current balancing can be carried out according to different dynamic working conditions and electric energy parameter differences, the impact current is prevented from being too high, components are protected, and the operation stability of the system is improved.

The invention discloses a new energy unmanned ship battery power control method and system, and the method comprises the steps: an unmanned ship total system sends a start-stop instruction to a BMS, and carries out the automatic awakening and starting of a battery pack; after the BMS is started, the voltage of a battery module, the current of a main loop and the temperature of key components are detected, and if normal, a pre-charging circuit is started to pre-charge a high-voltage loop capacitor; after pre-charging is completed, the BMS disconnects the auxiliary contactor and closes the main contactor, and the battery module supplies power to the electric equipment; during operation, the BMS acquires operation data in real time and uploads the operation data to the unmanned ship total system for monitoring through an external CAN bus; when the multiple battery packs are connected in parallel, cooperative charging and discharging control is carried out through an external CAN bus; the unmanned ship main system sends a shutdown instruction, and the BMS cuts off the main contactor; when abnormity is monitored, the BMS triggers the main fuse to fuse and cuts off self power supply. According to the method, the problem of safe starting is solved, the battery state monitoring precision is improved, a multi-dimensional safety protection system is constructed, and multi-battery-pack cooperative control is optimized.

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.

The utility model discloses a soft start system based on excitation current reduction, which is characterized in that a time relay mainly controls the switching of a live wire between a power resistor and an alternating current contactor, the power resistor magnetizes a transformer at the moment of electrification, and the alternating current contactor is connected into a circuit by the time relay after the magnetization is completed; and after the power resistor is short-circuited, the circuit is cut out, so that the purpose of suppressing the excitation inrush current is finally achieved, the excitation effect caused by voltage abrupt change at the power-on moment of the isolation transformer can be avoided, and the excitation abrupt change of the isolation transformer during power-on is effectively reduced.

The invention relates to the technical field of low-voltage power supply and distribution systems, and discloses a dual-power-supply quick switching circuit for a low-voltage power supply system, which comprises a main power supply, a standby power supply, a circuit breaker QF1, a circuit breaker QF2, a relay KA1, a relay KA2, an alternating current contactor KM1, an alternating current contactor KM2 and a load, the main power supply is connected with the circuit breaker QF1, one path of the QF1 is connected with the KM1, and the KM1 is connected with the load; the other path is connected with the KA1 from the QF1, the KA1 is connected with the KM2, the KM2 is connected with a coil of the KM1 and then connected with the zero line N, and the 1B phase line and the 1C phase line of the main power supply are further connected with the two ends of the coil of the KA1; the standby power supply is connected with the circuit breaker QF2, one path of the QF2 is connected with the KM2, the KM2 is connected with the load, the other path of the QF2 is connected with the KA2 from the QF2, the KA2 is connected with the KM1, the KM1 is connected with a coil of the KM2 and then connected with the null line N, and the 2A phase line and the 2B phase line of the standby power supply are further connected with the two ends of the coil of the KA2. When the main power supply is abnormal, the standby power supply can be quickly switched to avoid shutdown of the lower-level equipment, the standby power supply can be automatically switched after the lower-level short circuit fault is isolated, and the power supply reliability of the low-voltage power supply and distribution system is greatly improved.

The invention discloses a power supply control system and method for an eVTOL low-voltage distribution box, and relates to the technical field of power supply control, and the system comprises a multi-source double-bus power supply unit, a voltage reduction unit and an output unit. The multi-source double-bus power supply unit comprises a first bus independent power supply channel and a second bus independent power supply channel, the first bus independent power supply channel and the second bus independent power supply channel are isolated based on a contactor, the first bus independent power supply channel comprises x heterogeneous power sources and x ideal diodes, and the x heterogeneous power sources comprise a high-voltage-to-low-voltage DC-DC power source, a ground power source and n lithium battery power sources. The second bus independent power supply channel comprises y paths of heterogeneous power supplies and y ideal diodes, and the y paths of heterogeneous power supplies comprise y paths of lithium battery power supplies; the step-down unit comprises m paths of DC-DC step-down converters; and the output unit comprises m ideal diodes which are connected in parallel with the output end of the DC-DC buck converter. According to the invention, the stability and quality of power supply are ensured, and airborne equipment is ensured to work in a stable voltage and current environment.

The utility model discloses a direct current contactor stroke parameter detection system, which relates to the technical field of direct current contactor detection, comprises a bottom plate, and is characterized by further comprising a positioning clamping mechanism arranged on the bottom plate, an intelligent detection mechanism and an automatic material changing mechanism arranged on the bottom plate and acting on the positioning clamping mechanism, the automatic material changing mechanism comprises a rotating table, a stand column, a transverse plate and an oval concave suction cup. According to the utility model, through the arrangement of the positioning and clamping mechanism, the intelligent detection mechanism and the automatic reloading mechanism acting on the positioning and clamping mechanism, automatic detection of stroke parameters of the DC contactor is realized, and the microswitch effectively eliminates the influence of overshoot and a reset spring of a displacement sensor on the stroke parameters; the data display meter performs zero clearing on the data, performs acquisition and operation on over-travel data when a main feeler lever of the contactor is opened and whole-travel data when the main feeler lever is completely opened, and displays the data on the panel; on the basis of ensuring the detection precision, the detection time and the equipment cost are obviously reduced.

A rail connector assembly for connecting a mobile machine to an electrically-conducting rail system includes a boom assembly, a trailing arm assembly and a contactor assembly. The boom assembly includes a main boom and a boom tip. A first end of the main boom is configured to be coupled to the mobile machine, and a second end of the main boom opposite to the first end is pivotably coupled to the boom tip. The boom tip includes an angled portion that extends at a non-zero angle from a longitudinal axis of the main boom. The trailing arm assembly is pivotably coupled to an end of the boom tip. The contactor assembly is pivotably coupled to an end of the trailing arm assembly.

The invention discloses a cross-cabinet power scheduling method, device and system applied to a charging station, the cross-cabinet power scheduling method can be applied to the technical field of energy management of the charging station, and the method comprises the following steps: when the charging demand of a first power cabinet exceeds the rated total power thereof, the first power cabinet is switched to the second power cabinet; obtaining dynamic schedulable power of at least one second power cabinet and a peak power demand in a future time window; wherein the first power cabinet is any one power cabinet of the charging station, and the second power cabinets are other power cabinets; the dynamic dispatchable power is determined based on the rated total power of the power cabinet, the current load power and the safety margin adjusted according to the real-time state of the charging gun in the power cabinet; determining a resource occupation priority of each second power cabinet based on the dynamic schedulable power and the peak power demand; and calling the power resource of the corresponding second power cabinet through the corresponding cross-cabinet contactor group according to the priority. The operation stability and the power resource utilization rate of the charging station are improved.

The invention provides an anti-backflow system, and the system comprises a storage and charging integrated cabin which is used for storing electric energy; the storage and charging integrated cabin comprises a charging pile, an energy storage module, an intermediate relay and a switch which are electrically connected; the control module is configured to obtain static data and dynamic data; determining the output power of the energy storage module and the charging pile based on the static data and the dynamic data; acquiring power supply data; and based on the power supply data, adjusting the power supply condition among the energy storage module, the charging pile and the commercial power, and determining the opening or closing of a first switch node, a second switch node, a third switch node, a fourth switch node, a fifth switch node and an anti-countercurrent contactor, so as to solve the problems that the utilization rate of distributed energy is greatly reduced due to a current anti-countercurrent control scheme; and equipment loss is accelerated, the service life of equipment is shortened, and the operation and maintenance cost is increased.

The invention discloses an energy storage system parallel operation circuit and a control method thereof. The energy storage system parallel operation circuit comprises a master battery cluster loop, a slave battery cluster loop and a battery cluster pre-charging equalization loop. And the pre-charging equalization loop is provided with a controllable resistor bypass which is connected in parallel with the contactor and is controlled by the battery management system. A charging and discharging parallel operation strategy is divided, the voltage of a battery cluster is collected, a pre-charging equalization loop is connected, and primary and secondary closing operations are carried out based on the voltage state. The problem of circuit and device damage caused by impact current due to large inter-cluster voltage difference is solved through the master-slave configuration pre-charge equalization loop; meanwhile, the problem of long parallel operation time caused by separation of a pre-charging time sequence and an equalization time sequence is solved by combining a control method; through the dynamic secondary closing operation, the problem that balance is easily damaged by voltage fluctuation in the parallel operation process, and parallel operation fails is solved, parallel operation can be achieved without system restart in a loop under a complex scene in cooperation with a circuit architecture, and the parallel operation reliability, the operation stability and the charging efficiency of the energy storage system are effectively improved.

A power rail connector for an electric power system in an electric machine includes a linkage having a lower link and an upper link, and a rail contactor coupled to the lower link and including electrical contacts positioned to electrically connect to a power rail. The linkage includes a fold joint, a lift joint, and a pivot, and is adjustable from an extended, current-collecting configuration to a collapsed configuration via rotation of the lower link relative to the upper link and rotation of the upper link relative to the pivot. Related machinery and methodology is also disclosed.

A contact mechanism and a direct current contactor of the present invention. An auxiliary moving contact module moves in an interlocked manner with a transmission member, which is a moving part, and a moving contact bridge on the transmission member, a dimensional chain is short, and the movement stroke is stable and reliable. Since a reed is in interlocking fit with the transmission member and the moving contact bridge by means of a base, the transmission member can push the base to enable the moving contact bridge and the reed to synchronously perform disconnection motion, so that necessary disconnection can be ensured by means of a relatively large counterforce of a main spring even if the reed is adhered to an auxiliary fixed contact, thereby ensuring that the on-off states of a main contact and an auxiliary loop are consistent.

The invention relates to the technical field of power system energy storage equipment testing, in particular to a small and medium-sized industrial and commercial energy storage cabinet twin-trawling testing system which comprises a main loop, a secondary control loop and an anti-countercurrent detection unit, the main loop comprises double testing loops and four sets of alternating current contactors, and multi-machine twin-trawling testing frameworks such as one-to-one, one-trawling-two and one-trawling-three can be flexibly combined; independent switching between grid connection and grid disconnection is supported, the secondary control loop comprises a button with a lamp and a grouping reset button, and the countercurrent prevention detection unit detects the energy flow direction in real time through an intelligent electric meter and a current sensor and has a mains supply charging function. According to the test system, through a double-loop parallel test architecture and a multi-machine flexible combination design, the system can be synchronously butted with multiple energy storage cabinets to carry out parallel test, the test efficiency can be improved, and a safety system with anti-countercurrent detection, rapid mode switching and precise control protection guarantees the test safety; the arrangement of the standardized terminal and the button with the lamp simplifies the operation difficulty, and reduces the test threshold.

The invention relates to the technical field of new energy reactive compensation, and provides an electric energy quality comprehensive treatment device, which comprises an electric energy monitoring system for realizing current sampling of a 10kV bus through a current transformer, performing voltage signal acquisition through a voltage relay, and finishing protection signal monitoring in cooperation with a signal relay. Comprehensive operation parameters including system voltage, current and harmonic characteristics are formed; the controllable static compensation system is used for establishing a stepped reactive compensation network with a harmonic suppression function by combining a series resonance suppression loop formed by an inductor and a capacitive compensation branch formed by a driving capacitor based on the comprehensive operation parameters through intelligent switching control of a contactor; and the dynamic reactive power regulation system is used for the stepped reactive power compensation network to realize voltage matching through a transformer according to real-time compensation requirements, and then the stepped reactive power compensation network is connected to a static var generator to generate compensation current opposite to the phase of the reactive component of the system. Fine adjustment can be achieved, the compensation precision is high, and the compensation effect is good.

The utility model discloses an automatic switching device for a DC power supply, and the device comprises a main control module which is used for obtaining the potential difference of two DC buses at different sampling moments through a voltage detection module, and obtaining a target voltage according to the potential difference; and if it is monitored that the bus battery pack voltage of one section of direct-current bus is abnormal based on the target voltage, controlling a contactor to pull in so as to make the two sections of direct-current buses parallel, thereby using a normal power supply to supply power to the abnormal direct-current bus. According to the invention, a normal power supply is automatically and quickly used to replace an abnormal power supply to supply power to the DC bus with abnormal power supply, the current situation of passive and hysteresis operation of personnel is changed, uninterrupted power supply is realized, the power failure time is reduced, loss caused by power failure is avoided, the user experience is improved, and the application prospect is wide. According to the invention, automatic switching of the dual power supplies during fault, maintenance and operation mode adjustment is realized, the operation of operation and maintenance personnel on equipment is reduced, and the safety coefficient of operation is improved.

The invention discloses a high-voltage direct-current contactor sealing process and a high-voltage direct-current contactor, and the sealing process comprises the following steps: providing a ceramic assembly, a magnetic conductive plate, an iron core sleeve and a sealing sheet, carrying out the laser welding after the assembly to form a preliminary sealing assembly, and transferring the preliminary sealing assembly into sealing equipment; placing the sealing piece at the gas path through hole in the ceramic assembly or the magnetic conductive plate, and enabling the integrated connector to be attached to the peripheral area of the gas path through hole; the vacuumizing device vacuumizes the sealed cavity through the multi-way pipe fitting, and after the vacuum degree reaches the preset requirement, the vacuumizing device is closed; the inflating device is used for inflating protective gas into the sealed cavity through the multi-way pipe fitting; after air inflation is completed, the air inflation device is closed; the electric resistance welding device pushes the sealing piece to abut against the ceramic assembly or the magnetic conductive plate through the electric resistance welding connector and adopts the electric resistance welding technology to weld the sealing piece so as to completely seal the gas circuit through hole. The production efficiency can be improved, the cost and the product leakage rate are reduced, and the long-term sealing performance is improved.

The invention discloses an electric aircraft high-voltage power distribution control method and system, a medium and a product thereof, and relates to the technical field of high-voltage power distribution, and the method comprises the steps: receiving a DC power supply outputted by a power battery pack, and achieving the power-on soft start through a pre-charging loop; distributing electric energy to a motor controller, an auxiliary power supply module, an air conditioning system and an electric heating system through a power distribution level according to the load priority; the power distribution stage integrates multiple solid-state relays or contactors to form load branches. An independent protection unit is configured for each load branch at a load output stage, and the independent protection units monitor voltage, current and temperature parameters in real time and execute fault isolation operation when the monitored parameters exceed corresponding preset thresholds. According to the invention, high-voltage power distribution control with load priority scheduling and branch-level rapid fault isolation is realized under the condition of high power density.

The invention relates to the technical field of industrial safety control, in particular to a dual-system redundancy safety circuit and a self-diagnosis method, the dual-system redundancy safety circuit is composed of a first safety system, a second safety system, a test load and a switching unit, and the first safety system and the second safety system realize information interaction through an optical coupling isolation communication interface. According to the self-diagnosis method, an encrypted diagnosis trigger pulse sequence is generated through the second safety system, a test contactor of the first safety system is driven to be connected to a test load, and a main safety loop generates simulated real safety action current; the second safety system performs high-speed sampling, filtering, correlation analysis and response delay extraction on the current waveform to obtain a diagnosis result of the contact performance and the load capacity; and when an abnormity is detected, the second safety system controls the switching unit to execute safety switching through the solid-state switching output point, so that control right taking-over is realized, and the reliability and the online diagnosis capability of the safety loop are improved.

The invention discloses an intelligent switching control electrician practical training identification device, which belongs to the technical field of electrical detection and comprises a practical training platform, an operation panel, an electrical carrier plate and a built-in PLC (Programmable Logic Controller), the system integrates power input, a first conversion unit composed of a first isolation transformer and a first contactor, a second conversion unit composed of a second isolation transformer and a second contactor, a control unit, a data storage module, an operation input unit, a feedback unit and a load output unit. A dual-safety interlocking structure combining software interlocking and contactor hardware interlocking is realized through a PLC, and two paths of power outputs cannot be switched on at the same time. The device has the functions of intelligent mode switching, real-time voltage monitoring, fusing and sudden stop dual protection, operation state feedback and practical training data storage, meets industrial-grade and safety-grade practical training requirements, is compact in structure and high in safety, supports closed-loop control and data tracing, and is suitable for modern electrician skill training and intelligent examination and identification.

The invention discloses a contactor magnetic core, a contactor electromagnetic assembly and a contactor. The contactor magnetic core comprises a static magnetic core which is suitable for being fixed on a magnetic conductive plate of the contactor and is provided with a main body part which is suitable for being inserted into a coil framework of the contactor; and the movable magnetic core is suitable for being movably inserted into the coil framework and is provided with a flange part positioned at the upper end of the movable magnetic core. When the static magnetic core and the movable magnetic core are inserted into the coil framework, the main body part of the static magnetic core faces the flange part of the movable magnetic core, and the diameter of the main body part of the static magnetic core is slightly larger than that of the flange part of the movable magnetic core, so that the electromagnetic attraction force between the static magnetic core and the movable magnetic core is increased. According to the invention, the number of turns and the copper consumption of the coil can be reduced while enough electromagnetic attraction is ensured, so that the cost and the size of the contactor can be reduced.

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

The invention relates to the technical field of electronic device state evaluation, in particular to a service life judgment method and system for a high-voltage direct-current contactor. The method comprises the following steps: in each on-off action process of the direct current contactor, synchronously acquiring arc duration, peak current, contact temperature rise and pull-in delay time to form a physical quantity data set of single operation; calculating a thermal damage component according to the contact temperature rise and the arc duration, multiplying the peak current square by the contact resistance obtained by real-time measurement to obtain an electrical damage component, and determining a mechanical damage component based on the pull-in delay time; and calculating the weighted sum of the thermal damage component, the electrical damage component and the mechanical damage component, and recording the weighted sum as a basic damage value. Calculation is carried out based on field real-time data, the actual degradation process under different operation currents, operation frequencies and temperature rise conditions is accurately reflected, and the authenticity of life prediction is improved.

The utility model discloses a contactor static contact, a static contact assembly and a contactor. The contactor static contact comprises a static terminal and a static contact. The static terminal comprises a main body part which is used for being electrically connected to a load circuit so as to bear load current; and the heat dissipation plate is connected with one side of the main body part. And the static contact is arranged on the main body part and is used for electrically contacting with a moving contact of a moving contact of the contactor. The static terminal is an integrated piece, and heat of the static contact of the contactor can be transmitted to the shell of the contactor through the heat dissipation plate and dissipated to the outside through the shell, so that the heat dissipation performance of the contactor can be improved. In addition, the anti-short-circuit current capability of the contactor can be improved. Besides, in some embodiments of the utility model, the top opening of the housing of the contactor is sealed by the sealant poured into the top opening, so that external pollutants can be prevented from entering the housing, and the contact of the contactor is prevented from being polluted by the external pollutants.

The application discloses a control method and device of a PTC auxiliary heating device, an automobile air conditioner, a storage medium and a computer program product, and relates to the technical field of automobile air conditioners. The method comprises the following steps: in the case that the PTC auxiliary heating device does not start working after the automobile air conditioner is powered on, determining whether a fault occurs in a direct-current contactor according to standby parameters of the automobile air conditioner; if it is determined that no fault occurs, determining that the automobile air conditioner can start and run in a preset starting mode; if it is determined that a fault occurs, initiating a prompt message that the direct-current contactor has a fault; determining whether a fault occurs in a temperature protection module according to on-off parameters of a PTC protection circuit; if it is determined that no fault occurs, determining that the automobile air conditioner can run in a preset electric auxiliary heating mode; and if it is determined that a fault occurs, initiating a prompt message that the temperature protection module has a fault. According to the scheme, protection measures are taken when faults occur in the direct-current contactor and the temperature protection module, and the reliability and safety of the automobile air conditioner are improved.

This utility model provides a contactor lead-out connection structure and a contactor, including an insulating cover and a lead-out terminal. The insulating cover has a connection hole, and the lead-out terminal is fitted into the connection hole of the insulating cover. It has a stationary contact end as a stationary contact and an external portion away from the stationary contact end. The external portion is used to connect to an external connection terminal. The external portion also has a fixing part extending outward in its radial direction, and is fixedly connected to the insulating cover through the fixing part. On the radial projection plane, the distance between the connection position of the lead-out terminal and the insulating cover, and between the connection position of the lead-out terminal and the connection terminal, is increased. When the connection terminal is subjected to external pulling force, the pulling force on the connection position of the lead-out terminal and the insulating cover is reduced, making it less prone to tearing, thus ensuring the sealing reliability of the product.

The utility model discloses a semiconductor equipment control circuit based on a safety relay, which comprises a molded case circuit breaker, a programmable logic controller, a control loop, a first switching power supply and a second switching power supply, the input end of the first switching power supply is connected with the molded case circuit breaker, and the output end of the first switching power supply is connected with an EMO / emergency stop loop; the input end of the second switching power supply is connected with the molded case circuit breaker through the alternating current contactor, and the output end is connected with the programmable logic controller and the control loop; the EMO / emergency stop loop comprises an active dual-channel safety relay, and the active dual-channel safety relay is a relay with an indicating lamp. According to the utility model, a relay with an indicating lamp is added or another indicating lamp is added behind each or more EMO / emergency stop loop, so that the fault position of the EMO / emergency stop loop can be quickly positioned, and the fault point can be quickly repaired to realize quick recovery; meanwhile, the operation difficulty is reduced, and the operation safety is improved.

According to the high-integration-level high-voltage switch module provided by the invention, components such as the main contactor, the pre-charging contactor, the pre-charging resistor, the voltage / current acquisition module and the main control chip are integrated, internal electrical connection is carried out through the internal PCB and the cable, and finally integral packaging is carried out. The packaged switch module has the functions of main power supply control, pre-charging, current and voltage acquisition and communication, can realize integral direct insertion installation, only has two high-voltage interfaces and one communication control interface for external electrical connection, is especially suitable for a multi-path output control scene of a high-voltage control box, and has a wide application prospect. A corresponding number of switch modules are selected for configuration according to actual requirements, so that flexible expansion of the system is realized, the integration level of the high-voltage control box is remarkably improved through the standardized design, and an efficient and reliable solution is provided for application in related fields.