6849 results about "Contactor" patented technology

A case includes a shell having a back panel, a front panel, and at least one side wall that define a cavity for receiving the portable electronic device and a side opening between the back panel and the front panel for insertion of a portable electronic device. The case further includes a removable endpiece having a base and, optionally, an adapter, which includes a male plug for insertion into a female port of the portable electronic device, a contactor opposite the male plug, first contacts disposed on the male plug, and second contacts disposed on the contactor. The removable endpiece is configured for insertion through the side opening into the cavity. The removable endpiece includes at least one tab and the shell defines at least one tab receptacle along the side opening to receive the at least one tab of the removable endpiece.

A case for a portable electronic device includes a shell having a back panel, a front panel, and at least one side wall. The back panel, front panel, and side wall(s) define a cavity for receiving the portable electronic device and a side opening between the back panel and the front panel for insertion of the portable electronic device. The case further includes a removable endpiece having a base and, optionally, an adapter, which includes a male plug for insertion into a female port of the portable electronic device, a contactor opposite the male plug, first contacts disposed on the male plug, and second contacts disposed on the contactor and electrically coupled to the first contacts. The removable endpiece is configured for insertion through the side opening into the cavity and between the front panel and the back panel for engagement with, and retention of, the portable electronic device.

The invention provides a reconfigurable energy storage system for online dynamic replacement of a fault battery and a control method. Firstly, a multi-level reconfigurable battery array framework is constructed, each battery module is integrated with an independent three-port power switch unit and a wireless communication node, and self-management and quick response of the battery modules can be achieved. The bottom layer battery cluster adopts MOSFET matrix topology, and the FPGA controls PWM signals to dynamically adjust the series-parallel connection structure of the batteries. And the central controller calculates an optimal connection pair in real time based on the power demand, and controls the contactor to establish a new path. When multiple modules fail, the system automatically activates three-layer collaborative reconstruction, the faulty module is switched to a bypass through a three-port switch, and a central controller periodically refreshes a charging and discharging plan according to a system state, so that the cycle efficiency of the system is improved, and the service life attenuation rate of a battery array is reduced. According to the invention, online dynamic replacement of the faulty battery is realized, the operation stability and efficiency of the system are improved, and the maintenance cost and downtime are effectively reduced.

The invention discloses a charging pile direct current power distribution method based on chaos topology, and the method comprises the steps: building a charging pile power initial chaos topology distribution network based on a matrix topology network according to user demands; expanding the dimension of the charging pile power initial chaotic topological distribution network to a high-dimensional curved surface through a Gaussian kernel function to obtain a charging pile power chaotic topological distribution network with a plurality of charging nodes; on the basis of the charging pile power chaos topology distribution network, the required power of each charging gun and a power distribution strategy, controlling on and off of a contactor switch unit so as to control guiding of power output by a power conversion unit; therefore, efficient power flexible scheduling can be realized, the degree of freedom of all nodes in the power topology can be customized at will, and it is ensured that each node can reach the efficiency expected by a user.

The present teaching relates to method and system for charging a rechargeable battery deployed in an electric apparatus. The system resides in the electric apparatus. The system comprises a motor, an inverter, an output rectifier, a configurator, and a controller. The motor comprises a stator having a plurality of stator teeth and a plurality of stator windings wounded on the plurality of stator teeth. The inverter comprises a plurality of power switch devices. The configurator comprises a plurality of contactors coupled with the plurality of stator windings and the plurality of power switch devices. The controller controls the plurality of power switch devices and the plurality of contactors, so as to configure the system to operate in one of a traction mode and a charging mode.

The contactor comprises an electromagnetic assembly, a static contact and a movable assembly, the movable assembly comprises a movable contact, a first elastic part and a driving part which are connected, and the first elastic part is configured to generate elastic force supporting the movable assembly; the driving component is configured to generate electromagnetic driving force through a magnetic field generated by the electromagnetic assembly, and the controller is configured to control a movable contact and a static contact of the movable assembly to be closed and respond to the fact that the sensor detects that the driving component generates displacement based on electric repulsive force generated by current flowing through the movable contact and the static contact. And controlling the electromagnetic assembly to adjust the generated magnetic field so as to reduce electromagnetic driving force which is generated by the driving part according to the generated magnetic field and is opposite to the electric repulsive force, so that the movable contact is not closed with the static contact again. According to the contactor disclosed by the invention, fusion welding of the movable contact and the static contact in the short circuit process can be prevented, so that the contactor fault is avoided, and the equipment reliability is improved.

The present invention discloses a charging stack power distribution system and method, and relates to the technical field of charging stacks. The system includes a main control module, at least one charging component, at least one contactor component and multiple charging terminals, the charging component includes multiple charging modules, the contactor component includes multiple contactors, each charging terminal is directly connected to at least one charging module, and is connected to another charging module through at least one contactor, the main control module is used to determine the combined charging module from other charging modules according to the terminal identifier of the target charging terminal; determine the target contactor identifier according to the module identifier and charging status of the combined charging module; control the contactor corresponding to the target contactor identifier to close. The present invention can dynamically adjust the power distribution between charging modules according to the charging demand, effectively integrate the output power of multiple charging modules to meet the charging demand of a single charging terminal, while maintaining the flexibility and efficiency of the system.

The invention relates to the technical field of high-voltage compensation, and provides a voltage stabilization type electric energy quality comprehensive treatment device. The TBB static reactive power compensation device comprises at least one switching reactance capacitor bank. Wherein the reactance capacitor bank comprises a vacuum contactor; the SVG dynamic reactive power compensation device comprises an SVG compensation device, and the SVG compensation device is electrically connected with a transformer through an isolation switch fuse group. Wherein the transformer is electrically connected with the switched reactance capacitor bank. The disadvantages of a traditional TBB are avoided through the TBB + SVG high-voltage reactive power dynamic hybrid compensation device, and the advantages of the SVG are added; sVG dynamic compensation is high in response speed and can compensate loads with fast reactive power change, and TBB static reactive power compensation is used for compensating stable loads with infrequent reactive power change of the system; fine adjustment can be achieved through combined compensation of the two, compensation precision is high, and the compensation effect is good.

The invention provides a low-modulation-ratio topological high-reliability high-voltage direct-hanging energy storage system and method.The system comprises three phases of energy storage unit chains, each phase of energy storage unit chain is formed by cascading a plurality of energy storage units, and the connecting ends of the three phases of energy storage unit chains are sequentially connected with an alternating current side filter inductor in series and then connected with a power grid; the energy storage unit comprises an H-bridge power unit, a bus capacitor, a direct current side filter inductor, a battery side pre-charging device, a direct current side contactor and a battery cluster; the direct current side positive electrode of the H-bridge power unit is sequentially connected with the direct current side contactor, the battery side pre-charging device, the battery cluster and the direct current side filter inductor in series and then is connected with the direct current side negative electrode of the H-bridge power unit, and the alternating current side positive electrode of the H-bridge power unit is sequentially connected in series. According to the invention, the high-voltage direct-hanging energy storage system can fully utilize the DC voltage redundancy to realize the frequency doubling current suppression of the battery cluster by utilizing the low modulation ratio characteristic, and the ripple current pulsation amplitude of the battery meets the national standard requirement under the condition that the device cost is not increased.

An arc path-forming part and a DC relay comprising same are disclosed. The arc path-forming part according to various embodiments of the present disclosure comprises a Halbach array and a magnet part that form a magnetic field in a space formed therein. The magnetic field formed by the Halbach array is stronger in the direction toward the space. The magnetic field formed by the Halbach array and the magnet part forms an electromagnetic force together with the current applied to each fixed contactor. Here, the electromagnetic force formed in the vicinity of each fixed contactor is formed in a direction away from the center of the space or in a direction away from each fixed contactor. Accordingly, a generated arc can be quickly extinguished and discharged by being induced by the electromagnetic force.

The invention belongs to the technical field of vehicle charging, and particularly relates to a double-direct-current bus star ring matrix control system and method of a charging pile and a storage medium, and the system comprises at least one charging host, each charging host is connected with at least two charging terminals, each charging terminal comprises at least one charging gun, and each charging gun is numbered; each charging host comprises a contactor matrix, a control unit and a plurality of power module groups, and each power module group is composed of a plurality of charging modules; each charging terminal is correspondingly configured with one power module group; two direct current buses; the contactor matrix comprises a ring topology contactor, a bus contactor and a parallel operation contactor; by adopting the double-direct-current bus star ring matrix topological structure and the control method, the use number of contactors is reduced, and the charging facility has flexible expansibility. The ring topology and the double direct current buses are combined, so that the system structure is more concise, and the reliability and maintainability of the system are improved.

In an embodiment, a multi-switch contactor assembly with a pre-charge system is disclosed. The multi-switch contactor further includes an array of switches and an actuator assembly configured to actuate each switch of the array of switches. In this embodiment, the array of switches includes a first switch configured to connect a first battery device to a circuit and a second switch configured to connect a second battery device to the circuit. The array of switches also includes a third switch configured to connect the first battery device and the second battery device in series to the circuit and a fourth switch configured to connect a pre-charge resistor to at least one of the first battery device and the second battery device.

The invention discloses a sodium ion battery energy storage system control method, which is mainly characterized in that a bidirectional DC / DC converter and a change-over switch branch circuit are additionally arranged between a sodium ion battery cluster and a PCS converter, the bidirectional DC / DC converter and the change-over switch branch circuit are arranged in parallel, the change-over switch branch circuit comprises a main contactor and a switching soft start, and the main contactor is connected with the change-over switch branch circuit. The two-way DC / DC converter has two modes, namely a buck mode and a boost mode, and the PCS converter can control the working state of the change-over switch branch. The bidirectional DC / DC converter and the change-over switch branch are additionally arranged between the sodium ion battery cluster and the PCS converter, low-end voltage is converted, the voltage of the battery end is widened to the direct-current voltage range of the PCS converter, the battery can be used in the full-voltage range, and resource waste is avoided.

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.

The utility model discloses a zero interruption dual power supply fast switching device, comprising a dual power supply switch, a power electronic assembly, an output switch QF and a load which are connected in sequence, the power electronic assembly comprises an electronic bypass unit VT, a mechanical bypass contactor KM, an isolation transformer TM, a bidirectional converter CU and a super capacitor energy storage unit CAP, a contact S1 in the dual-power switch is connected with a main power supply, a contact S2 is connected with a standby power supply, a mechanical bypass contactor KM is connected with an electronic bypass unit VT in parallel, an isolation transformer TM is connected to the output end of the electronic bypass unit VT, and the two ends of a bidirectional converter CU are connected with the isolation transformer TM and a super capacitor energy storage unit CAP respectively. According to the device, the dual-power-supply change-over switch is matched with the power electronic component, so that rapid switching of the dual-power-supply switch is realized, the problem of power supply interruption in the switching process is solved, and the reliability of power supply is improved; and meanwhile, few energy storage elements are used, and the cost is low.

The utility model relates to the field of circuit protection, in particular to a contactor integrated with an excitation function, and an excitation ignition assembly, a first piston, a first conductive part, an auxiliary contact system, a push rod, a melt, an air passage, a second piston and an elastic part are integrated in the contactor. The melt and the auxiliary contact system are connected in series and then are connected in series between the two static contacts. In a normal working state, the auxiliary contact system is insulated and disconnected, when an overload current, a short-circuit current or an abnormal condition occurs, the ignition assembly is excited to act to drive the first piston and the first conductive piece to move, the first conductive piece enables the auxiliary contact system to be conducted and closed, and the melt is connected into a main loop in a parallel connection mode; and then the second piston and the elastic piece are driven to displace through the air passage, so that the contact system is switched off, the elastic piece generates irreversible deformation, and the first piston and the first conductive piece push the push rod to disconnect the melt. According to the invention, the power loss is low, zero-current cut-off of a main loop can be realized, and the breaking capacity and the breaking reliability are improved.

A method operable by a controller of a static transfer switch (STS) is provided. The STS includes first and second inputs selectively coupled with first and second power sources via first and second circuit breakers, respectively, an output coupled with a load, first and second bypass breakers selectively coupling the first and second inputs, respectively, with the output, at least one removable power stage module including first and second power stages configured to conduct electrical power when active, first and second contactors selectively coupling the first and second inputs with the first and second power stages, respectively, and a load switch selectively coupling the first and second power stages with the output. The method includes modifying an operating state of the first and second contactors and the first and second power stages to implement a bypass operation and an un-bypass operation of the STS in response to a trigger condition.

The invention provides a high-voltage power supply and distribution system for an electric vertical take-off and landing aircraft, and belongs to the technical field of power supply and distribution regulation control systems, and the system comprises a main bus bar module which is used for the current collection and distribution of an energy storage battery and a ground DC bus high-voltage power supply, and is provided with a fuse for overload cut-off; the output bus bar module comprises six mutually-independent motor load output channels and two mutually-independent high-voltage output channels, and each motor load output channel supplies power to the two symmetrically-arranged motors at the same time and is used for distributing 12 motor loads and 2 high-voltage output loads; the power-on buffer module is used for power-on buffer of 12 paths of motor loads and restraining power-on impact current; the self-locking control module has a motor load output control self-locking function, and can keep normal output of motor load current under the condition that the monitoring unit fails; and the monitoring unit module is used for monitoring the input voltage, the output voltage and the load current, and performing power-on buffer control and high-voltage contactor self-locking control on the motor load.

The invention discloses a method and device for determining the health degree of a direct current contactor and electronic equipment. The method comprises the following steps: acquiring historical life data of the DC contactor; determining initial accumulated damage of the direct current contactor based on the historical life data; based on a single loss environmental influence coefficient, the initial accumulated damage is corrected, target accumulated damage of the direct current contactor is obtained, and the single loss environmental influence coefficient is used for reflecting the loss degree of the direct current contactor caused by environmental factors when the direct current contactor executes closing or opening operation; and determining the health degree of the DC contactor based on the target accumulated damage. The technical problem that the accuracy of the health degree determination result of the direct current contactor is low in the prior art is solved.

The invention belongs to the technical field of vacuum contactors, and particularly relates to a vacuum contactor with a water cooling mechanism, which comprises a cooling structure, the cooling structure comprises a shell formed by mutually matching, combining and splicing a first shell and a second shell, and the shell is sleeved outside a ceramic body at a contact part of a vacuum arc extinguish chamber of a contactor body. And a cooling cavity formed between the inner wall of the shell and the upper outer wall of the ceramic body at the contact part of the vacuum arc-extinguishing chamber is divided into a spiral cooling cavity by a spiral partition plate. According to the invention, a wrapping shell is formed outside the ceramic body at the contact part of the contactor by using the two combined shells, and a spiral cooling cavity for injecting the cooling liquid is formed between the shell and the ceramic body, so that heat exchange and cooling are performed after the cooling liquid is injected, and the temperature at the contact part is rapidly reduced; and meanwhile, cooling liquid cooling can be carried out by adopting two modes of cooling liquid soaking and atomization spraying, so that stable and effective cooling is realized, and long-time stable operation and use of the contactor are ensured.

The invention belongs to the technical field of charging pile power distribution, and discloses a charging pile power distribution method and system based on a depth-first algorithm, and the method comprises the steps: building a host power topology adjacency matrix as an initial adjacency matrix; obtaining a host fault state, and optimizing the initial adjacency matrix to obtain a real-time adjacency matrix; when a host fault state or charging gun power demand change is detected, each charging gun is taken as a starting point, the real-time adjacency matrix calculates each charging path and path efficiency through a depth-first algorithm, the charging paths with the path efficiency lower than a preset value are eliminated, weighting priorities of the remaining paths are calculated, and the charging paths are calculated according to the weighting priorities; selecting the charging path with the highest weighting priority as a target path; and performing cross verification on the target path and the parallel contactor path, if verification succeeds, outputting the target path, otherwise, outputting the path successfully verified last time, so that power distribution can be dynamically and flexibly adjusted according to the charging power demand changing in real time.

The present application relates to the technical field of contactor, disclose a kind of multifunctional contactor, including upper shell and the base of being clamped with upper shell, movable support, moving iron core, coil support, coil winding, static iron core are arranged from top to bottom in upper shell and base, wherein coil support, coil winding and static iron core are fixed in base, coil support is set on static iron core, return spring is arranged between coil support and moving iron core, movable support is connected with moving iron core and slides in upper shell, movable support is parallelly provided with multiple movable contact point groups, and fixed contact point group is arranged on both sides of each movable contact point group.The multifunctional contactor, by the cooperation design of contact roller and semicircular arc groove, converts wire contact into surface contact, increases contact area, reduces on-resistance, reduces current loss;The combination of friction strip and inclined groove surface makes the contact roller produce slight rotation each time, avoids local excessive wear, prolongs the service life of contact point.

The utility model relates to the field of circuit protection, in particular to an excitation integrated contactor with high breaking capacity, which comprises a driving system and a contact system, and further comprises an integrated excitation source, an excitation action assembly and an elastic piece, the elastic piece is arranged for one moving contact, one end of the elastic piece is fixed, the other end of the elastic piece is a free end, the excitation action assembly is fixedly connected with the free end of the elastic piece, the excitation source drives the excitation action assembly to move, the contact system is forcibly opened, and meanwhile, the elastic piece generates elastic deformation capable of restoring to the initial position; and the elastic piece, the moving contact and the excitation action assembly are all reset to initial positions during normal opening. The contactor has normal functions of the contactor and also has large current breaking and resetting functions, so that normal use of the contactor is ensured while the breaking range of the contactor is widened.

The invention discloses a new energy automobile multi-source system and a control method thereof, and belongs to the technical field of new energy automobiles. According to the multi-source system of the new energy automobile, a set of auxiliary power supply is added on the basis of an original automobile high-voltage framework, and the whole automobile control module communicates with the BMS main control modules of the two sets of batteries to obtain the states of the two sets of batteries. When the comfortable electric accessory needs to work, the whole vehicle control module obtains the states of SOC, voltage, current, temperature, alarm information and the like of the two sets of battery systems, an auxiliary power supply is preferentially used for supplying power to the comfortable electric accessory, power supply of a power battery to a main drive motor is not affected, normal starting of the comfortable electric accessory is guaranteed with the lowest cost, and the comfortable electric accessory can work normally. The endurance mileage of the vehicle is not reduced; when the electric quantity of the auxiliary power supply is insufficient or a fault occurs, the whole vehicle control module can switch the power battery to supply power to the comfortable electric accessory by controlling the corresponding contactor, so that serious consequences such as a high-temperature fault of the power battery caused by the fact that the comfortable electric accessory cannot be normally started in the state are prevented.

The invention provides an active intervention type arc-extinguishing and resonance-eliminating device and method, and relates to the technical field of power system safety control, the device comprises an intelligent grounding module, the intelligent grounding module comprises a three-phase line led out from a system bus, and the three-phase line is grounded through a secondary side of a voltage transformer; a three-phase contactor and an impedance grounding transformer are sequentially connected in series between the system bus and the grounding end; when overvoltage and line resonance are caused by a non-single-phase earth fault of the power distribution network system, the PTC resonance elimination module is used for actively carrying out resonance suppression; the monitoring module is used for monitoring the working state of the device and generating state information; the processing module is used for processing the state information; and the alarm module performs a corresponding alarm action. According to the active intervention type arc and resonance elimination device and the matched fault treatment method thereof, innovative application of the intelligent grounding module and the PTC resonance elimination module is combined, and a comprehensive solution with high flexibility and self-adaptive capacity is formed.

The invention discloses an insulating main contact contact structure and a contactor, the insulating main contact contact structure comprises a base part, an insulating shaft sleeve, a transmission rod, an arc extinguishing grid sheet, a screw A, a movable contact and a fixing assembly, the insulating shaft sleeve is arranged in the base part, the transmission rod penetrates through the insulating shaft sleeve, the transmission rod penetrates through the base part through the insulating shaft sleeve, and the arc extinguishing grid sheet is arranged on the base part. The arc extinguishing grid sheet is connected and fastened with the base part through a screw A. The movable contact is arranged on the insulating shaft sleeve. In the using process of the prepared contactor, due to the fact that the arc extinguishing grid pieces are designed between the contacts, the arc burning time of the contacts of the contactor in the on-off process is shortened, and ablation splashes of the contacts are reduced; and meanwhile, the insulated gate sheet with the inverted E-shaped cross section is designed and assembled on the base, so that the insulating property between the static contacts is improved, the insulating property between the main contacts of the contactor is improved, and the service life of the contactor is prolonged.

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 a power distribution room comprehensive safety monitoring alarm system and a fault prediction method.The alarm system comprises a data acquisition module, a programmable logic controller and a communication module, and the data acquisition module comprises a temperature and humidity sensor, a smoke sensor, a water sensor and a gas monitoring sensor; the programmable logic controller comprises a power supply module, an analog quantity input module, a calculation and storage module, an analog quantity output module, a contactor, an indicating lamp and a local area network, the communication module comprises a power distribution room monitoring center and a wireless communication device, and the data acquisition module, the programmable logic controller and the communication module are connected in sequence. The fault prediction method comprises the following steps of data acquisition and preprocessing, feature extraction, model training and fault prediction and preventive maintenance decision making. The power distribution room safety monitoring mode is comprehensive, the automation degree of alarm is improved, the inspection pressure of operation and maintenance personnel is shared, and emergency safety events can be prevented or handled.

The utility model provides a high-voltage direct current module with control protection function, which comprises a base, a shell, contactors, fuses and copper bars, the base is detachably connected with the shell, an accommodating space is formed between the shell and the base, the contactors, the fuses and the copper bars are arranged in the accommodating space, the base and the shell are fixed in a matched manner by using four hook-shaped buckles, and the shell is detachably connected with the base. The contactors, the fuses and the copper bars are limited through clamping grooves, the contactors and the fuses are fixed to the copper bars through screws, the outside of the module is connected with a main loop through the copper bars, and the locking screws are fixed. According to the modular installation structure, the contactor and the fuse are integrated, the size is smaller, and maintenance and replacement of the control protection module are facilitated.

Fault breaking contactors are disclosed. In an embodiment, an electromechanical switching device includes one or more terminals; a moveable contact; and an actuator assembly for moving the moveable contact between a closed position in which the moveable contact contacts the one or more terminals and an open position in which an air gap is maintained between the moveable contact and the one or more terminals; and a dynamic air gap mechanism configured to increase the air gap beyond that of the closed position in response to a fault current.