4513 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 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 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.

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 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 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 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.

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 elevator energy-saving control system based on an auxiliary power supply module, which relates to the field of elevator energy-saving control and comprises a battery module, the auxiliary power supply module and an energy-saving control module, the battery module is connected with a circuit breaker, the circuit breaker is connected with at least one contactor set used for being connected with at least one elevator in a one-to-one correspondence mode, the same bypass contactor is connected between the circuit breaker and all the contactor sets, and the bypass contactor is connected with an anti-reverse diode in parallel. The mains supply and the battery module are respectively connected with the auxiliary power supply module; the auxiliary power supply module is connected with the energy-saving control module; and the energy-saving control module is respectively in communication connection with the circuit breaker, the contactor group, the bypass contactor, the battery module and the auxiliary power supply module. The charging and discharging energy balance of the battery module can be realized, and the problems of conversion electric quantity loss and high cost caused by the use of a conversion module are avoided.

The invention provides a wide-voltage intelligent control large-current contactor. Comprising a wide voltage control module which is composed of a rectifier bridge, a voltage acquisition module, a single-chip microcomputer control system and a DCDC conversion module and is used for converting input AC / DC voltage into stable 24VDC output; the wide-current control module is used for controlling the coil to start, the contactor can be in a working state even if power failure occurs, the stability of a power grid is ensured, and the device can be applied to the fields of uninterruptible power supply control cabinets, photovoltaic energy storage, power grid distribution and the like.

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.

A reinforcement beam for an automotive component is continuously formed with a metal sheet that is roll formed to have at least one tubular portion that extends along a length of the reinforcement beam. A solid state forge weld is formed between an edge of the metal sheet and an intermediate portion of the metal sheet to close a seam that extends along the tubular portion of the reinforcement beam. Prior to forming the solid state forge weld, select portions of the metal sheet are heated to a desirable welding temperature with a high frequency current delivered by electrical contacts to opposing sides of the weld seam. The desired welding temperature may burn off a galvanized coating on the metal sheet at the select portions prior to forming the solid state forge weld that is generally void of zinc inclusions.

The invention discloses a safe torque cut-off and electronic star sealing device and an elevator system, relates to the technical field of elevators, and is used for realizing STO and electronic star sealing functions. Aiming at the problem that a common contactor-free scheme at present cannot ensure the function safety, the invention provides the safe torque cut-off and electronic star sealing device, and the STO and electronic star sealing functions of an elevator are ensured through a safe torque cut-off module and an electronic star sealing module. Meanwhile, failure detection is carried out on the two newly-added modules through the control module, and a mutual detection mechanism between the control module and the safe torque cut-off module is established. When any one of the three newly added modules fails, the failure can be detected and the STO or electronic star sealing function is triggered. On the basis, all modules used for replacing a traditional contactor to achieve STO and electronic star sealing functions in the device establish failure detection mechanisms, so that the device can meet the requirement of the elevator for the function safety level.

An aspect of the present disclosure is directed to a connector. The connector is suited to connectorizing exactly two conductors. The connector includes a forward connector body, a rear connector body, a metal frame and exactly two electrical contacts. The rear connector body interfaces with the forward connector body. Further, the metal frame, which includes a shielding interface, surrounds at least a portion of both the forward and rear connector bodies. The electrical contacts extend from the rear connector body into the forward connector body. A first of the electrical contacts is electrically coupled to a first conductor of a shielded cable and the second of the electrical contacts is electrically coupled to a second conductor of the shielded cable. The shield interface of the metal frame is electrically coupled to the shield of the shielded cable.

The present invention relates to a contact (70) for a flat plug connector (50), and a flat plug connector (50) for a flat plug connector system (1), wherein the flat plug connector (50) has at least one contact (70) according to the contact (70) for a flat plug connector, andwherein the contact (70) has a terminal portion (71) for electrically conductive connection to an electronic component;wherein the contact (70) has a retaining portion (73) for fixing in a plug connector housing (51);wherein the contact (70) has a contact portion for electrically conductively contacting a complementary contact (34),wherein the contact portion is connected to the retaining portion (73) by means of a bent portion (74) of the contact (70),wherein the contact portion has a bent contact region (76) for electrically conductively contacting a complementary contact (34),wherein the contact portion has a first portion (75) which is arranged between the bent contact region (76) and the retaining portion (73), wherein the first portion (75) and the retaining portion (73) enclose an acute angle, andwherein the contact portion has a second portion (77) which is arranged opposite the first portion (75) relative to the bent contact region (76), and wherein the second portion (77) has a support portion (78) which is configured to be supported at the retaining portion (73) by the support portion (78) upon deflection of the contact portion towards the retaining portion (73).

The invention relates to an active equalization circuit of battery modules and a control method. The circuit is characterized in that each battery module is connected with a DC / DC boost module; the battery cluster level management unit receives the battery information sent by each battery module, calculates the current SOC of each battery module and the average value of each current SOC, and when it is judged that the maximum value of the difference value between the current SOC of any battery module and the average value exceeds a set range, sends the battery information to the battery cluster level management unit; charging / discharging control information of the battery module is generated and sent to the equalization control module; the equalization control module controls the closing of the corresponding contactor based on the charging / discharging control information and controls the starting of the DC / DC boosting module to charge / discharge the corresponding battery module; according to the invention, one battery cluster is configured with one DC / DC boost module, and when the energy storage system is charged, discharged or not charged and discharged, a single module is additionally charged or discharged, so that the charge consistency of the battery modules in the battery cluster is achieved, and active equalization is completed.

The invention discloses a test platform and method for an energy storage converter, and belongs to the technical field of energy storage. A 380V power grid is sequentially connected with a first circuit breaker, a first contactor, a transformer and the alternating current side of a first PCS; the direct current side of the PCS to be tested is sequentially connected with the second circuit breaker, the second contactor and the direct current sides of the first PCS and the second PCS; the alternating current side of the to-be-tested PCS is sequentially connected with a third circuit breaker, a third contactor and the alternating current side of the second PCS; the pre-charging module is connected in parallel with the first PCS; the unit controller is respectively connected with the first contactor, the second contactor, the third contactor, the pre-charging module, the PCS to be tested and each module in the AC / DC combined source. Existing products are reasonably built, a battery system does not need to be configured, laboratory arrangement and testing of experimenters can be facilitated to the maximum extent, the testing efficiency is improved, and the construction cost is reduced. Meanwhile, the operation power of the test platform can be expanded according to test requirements, and the production test efficiency 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.

According to the contact mechanism, the contact system and the DC contactor of the utility model, the auxiliary moving contact module moves with the moving part transmission member and the moving contact bridge on the transmission member in an interlocking manner, the dimension chain is short, and the movement stroke is stable and reliable; as the reed is in interlocking fit with the transmission piece and the movable contact bridge through the base, the transmission piece can push the base to enable the movable contact bridge and the reed to synchronously perform disconnection motion, and inevitable disconnection can be ensured through larger main spring counterforce even if the reed is adhered to the auxiliary static contact, so that the on-off states of the main contact and the auxiliary loop are ensured to be consistent.

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 invention belongs to the technical field of power transformation equipment, and particularly relates to a low-voltage dynamic reactive compensation switching device which comprises a shell, a photoelectric isolation module and a communication module. The shell is in an inverted-T shape, a switching switch is arranged at the front end of the shell, wiring ports are symmetrically formed in the upper side and the lower side of the shell, and wiring bolts are installed on the wiring ports. A photoelectric isolation module is arranged on one side of the shell, and the heat dissipation holes dissipate heat for the photoelectric isolation module. According to the scheme, a thyristor and contactor hybrid switching switch is adopted, zero-crossing switching is realized by the thyristor during dynamic load fluctuation, and inrush current control is less than or equal to 10 times of rated current. And when the static state is stable, the contactor is automatically switched to be conducted, and the power consumption is reduced to 1.5 W and is greatly reduced compared with a pure thyristor scheme, so that the impact is avoided and the energy consumption is reduced. The thyristors are in bidirectional anti-parallel connection, and are matched with zero-cross detection logic of the controller, so that overvoltage and transient harmonic waves in the switching process are thoroughly eliminated, no interference is caused to a power grid, and the service life of the device and power grid equipment is prolonged.

The invention discloses an anti-countercurrent system based on V2G equipment and a control method, and the system comprises at least two charging and discharging modules which are connected to one side of a power line, and the other side of the power line is connected to a power grid; the charging and discharging module comprises a first bidirectional electric meter and a V2G charging pile. One end of the V2G charging pile is connected with the power line through the first bidirectional ammeter, and the other end is connected with the charging terminal. The bidirectional main electricity meter is connected between the power line and the power grid; the contactor is connected between the bidirectional main ammeter and the power line. The anti-countercurrent control module is in communication connection with the bidirectional main electric meter, the contactor, the first bidirectional electric meter and the V2G charging pile; according to the invention, a virtualized anti-countercurrent control architecture is adopted, any V2G charging pile or cloud server is used as an anti-countercurrent control module, a traditional hardware controller is replaced by existing equipment computing power, global power regulation and control are realized based on data provided by the bidirectional main ammeter and the first bidirectional ammeter, and the system deployment cost and complexity are significantly reduced.

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.