355 results about "Electrical protection" patented technology

The invention relates to a reverse polarity protected electronic circuit with a negative and a positive supply voltage line and with an electrical application circuit. The electrical application circuit has a positive and a negative power supply terminal. The reverse polarity protected electronic circuit comprises a reverse polarity protection circuit (1). The reverse polarity protection circuit (1) has a first and a second N-channel enhancement transistor as part of a reverse polarity protection transistor group (17). The first and second N-channel enhancement transistors are electrically connected in anti-series via a center terminal (86) of the reverse polarity protection circuit (1). The reverse polarity protection circuit (1) includes a control device (4) which is connected to the positive and negative supply voltage lines.Only when connected with the correct polarity does the control device (4) switch the first and second N-channel enhancement transistors of the reverse polarity protection transistor group (17) on. The control device (4) includes its own additional control reverse polarity protection circuit (81) which prevents damage to the control device (4) if connected with incorrect polarity, so that the control device (4) does not switch on the first and second N-channel enhancement transistors if connected with incorrect polarity.

The invention relates to a reverse polarity protected electronic circuit with a negative and a positive supply voltage line and with an electrical application circuit. The electrical application circuit has a positive and a negative power supply terminal. The reverse polarity protected electronic circuit comprises a reverse polarity protection circuit (1). The reverse polarity protection circuit (1) has a first and a second N-channel enhancement transistor as part of a reverse polarity protection transistor group (17). The first and second N-channel enhancement transistors are electrically connected in anti-series via a center terminal (86) of the reverse polarity protection circuit (1). The reverse polarity protection circuit (1) includes a control device (4) which is connected to the positive and negative supply voltage lines.Only when connected with the correct polarity does the control device (4) switch the first and second N-channel enhancement transistors of the reverse polarity protection transistor group (17) on. The control device (4) includes its own additional control reverse polarity protection circuit (81) which prevents damage to the control device (4) if connected with incorrect polarity, so that the control device (4) does not switch on the first and second N-channel enhancement transistors if connected with incorrect polarity.

The invention provides a high-reliability high-density three-dimensional integrated multichannel millimeter wave transceiving integrated radio frequency micro module, which adopts three-dimensional ceramic packaging as a packaging body and comprises an amplitude-phase unit and a transceiving unit, and the two units and a cover plate realize electrical vertical interconnection and airtight packaging through three-dimensional stacking. The micro module receives an input signal, the input signal enters a receiving channel after being selected by a switch, an amplitude-limiting low-noise chipset in the micro module carries out amplitude-limiting amplification on the received signal, then the received signal is output to an amplitude-phase multifunctional chip, and the received signal is synthesized and output after amplitude-phase adjustment and amplification. A transmitting input signal is input to the amplitude-phase multifunctional chip after being subjected to power division, is subjected to power amplification after being subjected to amplitude-phase adjustment and amplification, is selected by the transmitting-receiving switch, and is radiated and output through the antenna. A negative electricity protection circuit and a pulse modulation circuit are integrated in the micro module, and pulse control of transmitting and receiving work of the micro module is achieved. The micro module adopts a stepped heat dissipation technology of the chip, the substrate, the functional unit and the micro module, and has very strong practicability.

An electrical protection device capable of operating without auxiliary electrical power supply includes a control module configured to detect an electrical fault and a switching module, a first circuit including at least two normally-on JFET transistors and a switching member including a first contact. The switching module is configured so that, upon a switchover of the first contact when the current circuits, an electric arc is formed and so that the appearance of the electric arc generates an electrical signal transmitted to at least one of the transistors, the electrical signal driving the switching of the transistor.

The invention relates to the technical field of electrical protection, and discloses an electrical equipment protection device with a fault early warning function, which comprises a shell, a circuit board, a sensor group, an alarm component, a main control unit, an early warning execution module and a protection execution module. A cover plate with a visible glass window is arranged in front of the shell, and a display and control buttons are arranged on the circuit board. The sensor group collects operation parameters of electrical equipment, and the main control unit compares a preset threshold value, analyzes historical data, identifies abnormity, predicts fault risks and generates an early warning or protection instruction. And the early warning execution module triggers sound-light alarm and remote communication according to the instruction, and the protection execution module executes operations such as power failure. The electrical equipment protection device with the fault early warning function has the advantages that the operation parameters of the electrical equipment are monitored in real time, the advanced fault analysis algorithm is used for carrying out risk pre-judgment, and an early warning and protection mechanism is triggered in time.

The invention relates to the technical field of electrical safety protection devices, in particular to a branching buckle type new energy fuse. The fuse comprises a tube body which is provided with a through accommodating space; the branching buckle assembly comprises a first branching buckle and a second branching buckle which are embedded into the two ends of the pipe body respectively; the fuse assembly comprises a plurality of fuse parts and supporting parts which are in one-to-one correspondence, the fuse parts are wound on the supporting parts and penetrate through the accommodating space, and the two ends of the fuse parts and the two ends of the supporting parts are fixed to the first branching buckle and the second branching buckle together; and the end cap assemblies are arranged at the two ends of the pipe body in a sleeving manner so as to cover the first branching buckle and the second branching buckle. According to the invention, the arc energy is shared by designing a plurality of fuse pieces, the overall performance and stability of the fuse can be improved, and a reliable electrical protection effect is realized.

The invention belongs to the technical field of power supply and distribution of a data center, and provides an electrical protection method and system for power supply and distribution of the data center, aiming at the data center of a 2N power distribution architecture, electric energy parameters of two paths of external mains supply are collected and transmitted to an EMS of an energy storage system, and system charging and discharging power is controlled and adjusted through the EMS. According to the fact that the sum of the power on the two alternating current buses is larger than a set protection threshold value, the first switch device is controlled to cut off the connection between the energy storage system and the second alternating current bus, overload of a superior line or a transformer during charging or power supply switching is prevented, and in addition, through the measures of a reverse power detection device, first-path voltage loss linkage and the like, the energy storage system can be effectively protected. An external electrical protection system independent of the energy storage system is added to form dual protection, so that a dual fault superposition scene of energy storage system faults or power grid faults is effectively isolated, and the reliability of an originally designed power supply network of the data center is guaranteed.

A self-healing battery pack includes a plurality of battery modules connected in series. When a faulty battery module is detected, an electrical protective device connected in parallel with the faulty battery is caused to operate and thereby bypass the faulty battery module. The self-healing battery pack can additionally report the detection of the faulty battery module. When maintenance is scheduled to replace the faulty battery module, the self-healing battery pack can receive instructions to adjust a state-of-charge of the battery modules to reduce an equalization period.

The utility model relates to the technical field of electrical protection devices, in particular to a surge protection device with a temporary overvoltage protection function, which comprises a piezoresistor assembly, an inductor and a switch assembly, the piezoresistor assembly is connected with the switch assembly in parallel, and two ends of the inductor are respectively connected with the piezoresistor assembly and the switch assembly. The switch assembly comprises a conduction switch, a combination switch, a resistor R1 and a capacitor, the conduction switch is in linkage connection with the combination switch, the conduction switch is connected with the capacitor in series, the resistor R1 is connected with the combination switch and the inductor in series, and one end, away from the conduction switch, of the capacitor is connected with the combination switch and the piezoresistor assembly; when the conduction switch is closed and the capacitor is fully charged, the combination switch is conducted. By means of the arrangement, the surge protection device can be prevented from being damaged by impact when overvoltage occurs; when surge voltage occurs, the surge protection device can effectively discharge the surge voltage, and the safety of electric equipment is protected.

The present invention relates to a method of controlling an electrical protection device. When an electrical fault of the short-circuit type is detected during a step b) and when the tripping energy is greater than or equal to the tripping energy threshold in step d), controlling (S118) each switching module to enter the off-configuration. When the reclosing time of the given circuit breaker has elapsed, controlling (S122) each switching module to enter the on-configuration. If a circuit breaker is connected immediately upstream of the given circuit breaker, a test duration (T1) has not elapsed and a short-circuit is detected, performing steps c) to f) again; and if no circuit-breaker is connected immediately upstream of the given circuit-breaker, the test duration (T1) has not elapsed and a short-circuit is detected, controlling (S138) each switching module in the off-configuration.

An inductive sensor is integrated on a printed circuit board assembly (PCBA) of an electrical protective device, such that the inductive sensor is configured to contactlessly measure angular motion of an electrically conductive target mounted on the PCBA corresponding to a component of the electrical protective device. The inductive sensor comprises an integrated circuit, a transmitter coil, and receiver coils spaced apart vertically from the electrically conductive target. The integrated circuit is electrically coupled to the transmitter coil such that the integrated circuit is configured to transmit a high frequency time varying signal into the transmitter coil. The high frequency time varying signal energizes the transmitter coil thereby inducing a magnetic field. The magnetic field induces one or more output signals on the receiver coils and eddy currents in the electrically conductive target. The eddy currents produce a counter magnetic field that alters the output signals responsive to an angular displacement of the electrically conductive target.

The invention relates to a high-voltage electrical system (1) for a motor vehicle, comprising: - an electric drive unit (2) with a first high-voltage component in the form of a high-voltage energy storage device (4) and at least one second high-voltage component in the form of a permanently excited electric machine (5a, 5b), wherein the high-voltage components have live parts at least temporarily even in the event of an accident involving the motor vehicle, - at least one auxiliary consumer (3) electrically connected to the electric drive unit (2), - a first protective device (10) for providing an electrical protective measure for the at least one secondary consumer (3), which, in the event of an accident, is designed to separate the at least one secondary consumer (3) from the electric drive unit (2) to prevent the feeding of a voltage induced by the permanent magnet electric machine (5a, 5b) and to discharge it to allow an accident-related mechanical deformation, and - a second protective device (14) for providing a mechanical protective measure for the electric drive unit (2), which is designed to absorb an accident-related force applied to the electric drive unit (2) in order to prevent an accident-related mechanical deformation of the high-voltage components.

The utility model relates to the technical field of electrical protection equipment, and discloses a lightning arrester convenient to assemble and disassemble, a fixing device is composed of a base, a bidirectional threaded rod, a fixed rod, a sliding block, a threaded block, a connecting block, an arc-shaped block, a fixed cylinder, a movable rod, an annular block, a fixed block, a spring and a limiting block, and the two-way threaded rod is rotationally mounted in the base. According to the lightning arrester convenient to mount and dismount, by pulling and rotating a moving rod, a fixed block can enter an arc-shaped groove, the moving rod can be limited, a lightning arrester main body is placed at the top of a connecting block, a bidirectional threaded rod is driven by a rotating handle to rotate, the arc-shaped block can basically limit the lightning arrester main body, the moving rod is rotated, and the lightning arrester main body can be conveniently mounted and dismounted. And under the action of the spring, the fixing block is separated from the arc-shaped groove and enters the sliding groove, so that the limiting block can limit the lightning arrester main body, the fixing effect is good, and the lightning arrester main bodies with different specifications can be fixed.

The utility model discloses a kind of insulation parts of power equipment convenient to install, belong to electrical protection technical field, it includes insulating cover, the insulating cover one side is rotatably connected with insulating baffle by pin shaft, the insulating baffle top is fixedly installed with clamping strip, the insulating cover top one side is fixedly installed with mounting seat, the inside middle fixed mounting of mounting seat is with partition. The insulation part of power equipment convenient to install, two clamping plates are separated from clamping strip, so that insulating baffle can rotate and separate from insulating cover surface, make the air switch inside insulating cover expose and be adjusted control, again insulating baffle is rotated back to insulating cover surface, repeat the above operation, loosen two sliding plates, so that sliding plate is clamped in clamping strip under the action of reset spring reset springback, make insulating baffle be fixed on insulating cover surface, so that after completing adjustment to air switch, continue to carry out insulating protection to air switch.

Electrical protection device, distribution assembly, and associated electrical switchgear. This electrical protection device (300), configured to electrically connect an electrical load (M) to an electrical power source (S), includes incoming terminals (302), outgoing terminals (304), and switching means (310) actuated by a bistable actuator (324). A microcontroller (320) is provided to generate a fault signal (S320), which triggers the actuator, and an output signal (S321), which is different from the fault signal. The protection device includes a supervisory circuit (500), which is interposed between the microcontroller (320) and the actuator (324) and which includes an oscillator (510) configured to generate a periodic signal (S510).The monitoring circuit is configured to generate a trigger signal (S324) when, alternatively, the output signal (S321) of the microcontroller (320) is absent, or the periodic signal (S510) of the oscillator (510) is absent, or when a fault signal (S320) is emitted. See Figure 6 for abbreviations.

The invention relates to the technical field of power system automation, in particular to a new energy box-type substation state estimation, regulation and control method, which comprises the following steps of: injecting a multi-frequency electrical excitation signal into a box-type substation, acquiring a voltage signal and a current signal, establishing a digital twin model based on primary wiring topology and grounding grid topology, performing combined state estimation and parameter estimation to obtain a comprehensive feature vector representing a degradation state, and inputting the comprehensive feature vector into a fault diagnosis and life evaluation model to obtain a risk index; and constructing a risk weighting objective function taking active output, reactive output and current as independent variables, and solving to obtain a control quantity vector for adjusting power output, reactive compensation and an electric protection device action constant value, thereby reducing the operation risk and prolonging the service life of equipment while ensuring the grid-connected requirement.

This invention relates to the field of electrical protection technology and discloses a fuse and its manufacturing method. The fuse includes: a tube body; a fusible element disposed inside the tube body; inner caps disposed at both ends of the tube body, with the two ends of the fusible element welded to the inner caps at both ends of the tube body; and an external terminal welded to the inner cap. This invention provides a fuse that allows the external terminal and inner cap to be welded together, reducing the impedance caused by the interference fit assembly method in the prior art, thereby reducing its power consumption while ensuring electrical protection capabilities.

The invention discloses an electric shock protection method and device for an electric TN system, and relates to the field of electrical protection, the electric shock protection device comprises installation grooves formed in the two sides of the lower end of a cover plate and used for fixing an air bag, and one-way valve nozzles communicating with the air bag are fixed to the positions, corresponding to the installation grooves, of the upper end of the cover plate in a penetrating mode; upper sealing strips which abut against the outer half shell in a sealing mode are embedded in the positions, close to side lines, of the two sides of the upper end of the cover plate, and the air bag expands to push the cover plate to longitudinally move so that the upper sealing strips abut against the side walls of the outer half shell; the sealing assembly is used for sealing the periphery of the PE mother board and dividing the PE mother board into a plurality of blocks, and meanwhile the interior of the outer half shell is divided into a plurality of independent sealing spaces. By arranging the sealing assemblies, the interior of the outer half shell can be divided into a plurality of independent spaces, even if one space is corroded due to water leakage, other spaces cannot be affected, then the protection effect of the PE mother board is improved, and meanwhile the situation that the PE mother board is corroded, so that resistance is increased, and the safety protection performance is affected is avoided.

A self-healing battery pack includes a plurality of battery modules connected in series. When a faulty battery module is detected, an electrical protective device connected in parallel with the faulty battery is caused to operate and thereby bypass the faulty battery module. The self-healing battery pack can additionally report the detection of the faulty battery module. When maintenance is scheduled to replace the faulty battery module, the self-healing battery pack can receive instructions to adjust a state-of-charge of the battery modules to reduce an equalization period.

This application provides an electric motor, an electric propulsion device, and an aircraft. The electric motor includes: a stator having a cavity; a rotor rotatably connected to the stator via a shaft; and the rotor being insulated from the stator; a conductive component disposed within the cavity, one end of the conductive component being conductively connected to the shaft, and the other end extending to the outside of the electric motor. The electric motor of this application, by incorporating the conductive component, creates a complete low-impedance electrical path between the shaft and the conductive component, allowing current that might be input into the electric motor via the rotor hub to be output to the outside of the electric motor, thus improving the electrical protection performance of the electric motor.

The invention provides a protection control device for an expansion power generation system of a compression control energy storage power station. The protection control device comprises a control module, a plurality of measuring points arranged on the compression control energy storage power station and valves, the control module is in communication connection with each measuring point and the valve; the control module is used for acquiring measurement data of each measurement point, monitoring feedback signals of a plurality of devices in the compression control energy storage power station, applying a preset protection control strategy and controlling a valve according to the measurement data of each measurement point and the feedback signals of each device, and completing protection control of an expansion power generation system in the compression control energy storage power station. The equipment comprises an electrical protection device, an electrical cabinet, a circulating cooling water system, an expansion generator, a heat release system, a cold storage system, measuring points and valves. The reliability and efficiency of protection control of the expansion power generation system can be improved, the safety and reliability of the compressed air energy storage power station are improved, and the supporting capacity for a power grid is guaranteed.

Electrical protection device, associated electrical installation and control method The present invention relates to an electrical protection device comprising: a mechanical switch; an interruption cell (18) comprising N switching modules (32, 42), N being greater than or equal to 2, each switching module (32, 42) comprising a voltage limiting element (39, 49), each voltage limiting element having a different limiting voltage (Ulim1, Ulim2);a control unit comprising a cell control module (66), configured to control each switching module in the blocked configuration, the limiting voltages, alone and / or summed together, form at least 2N-1 distinct steps, and the cell control module is configured to control in the blocked configuration the switching module(s) whose limiting voltages form a step being the largest step less than or equal to a dielectric withstand of the mechanical switch. Figure for the abbreviation: Figure 2;

The invention relates to the technical field of packaging bodies, in particular to a power module packaging body with a self-protection function, which comprises a heat dissipation substrate, the top of the heat dissipation substrate is in threaded connection with a double-sided crimping substrate, and the middle part of the bottom inner wall of the double-sided crimping substrate is fixedly connected with a power chip set. According to the device, through double-sided cooling, the thermal resistance is obviously reduced, the module is allowed to operate under higher power without triggering over-temperature protection, the output capability is improved, through flexible interconnection and spring pressurization, the main failure mode of fatigue of bonding wires and welding layers is eliminated, the service life of the module is matched with the theoretical service life of a chip, the connection reliability is improved, and the service life of the chip is prolonged. The modular design realizes rapid assembly and automatic modular production, the guide structure provides a stable and reliable working platform for the electrical function, the electrical protection ensures that the mechanical structure is not damaged due to abnormal electrical stress, and the special protection control chip and the driving and soft turn-off circuit perform self-protection.

The invention relates to the fields of robot technologies, intelligent hardware and the like, and aims to provide a design scheme of the modular hardware architecture and the hot plug functional component. The core design content is as follows: a modular hardware main architecture adopts a layered and partitioned design, comprises a core control module, a sensing module and the like, and realizes plug and play through a standardized interface; according to the hot plug function assembly, a camera, an emotion sensor and other modules support safe plugging in the operation process, and automatic recognition and drive loading can be achieved. And module management and monitoring: monitoring the state of the module in real time, and supporting remote upgrading, fault isolation and hot backup. And safety protection: multi-stage electrical protection, a hot plug protection circuit and a physical locking mechanism are provided. The method has the advantages that the robot hardware flexibility, maintainability and expansibility are improved, the upgrading and maintaining difficulty is lowered, the downtime is shortened, application of the robot in multiple fields is promoted, the cost is lowered, and the life cycle is prolonged.

The utility model discloses a power supply recovery preset switch, and relates to the field of electrical protection and safety design. Comprising an electrified coil, a contact column, a guide rail, a sliding block switch and a reset spring. And the electrified coil and the contact column are fixed on one side of the shell through fixing sheets. The guide rail is trapezoidal, and a trapezoidal thin plate is fixed at the upper end of the guide rail. The slide block switch is of a trapezoidal structure, one side is fixed with the reset spring, the other side is fixed with a small iron sheet and a contact, the center is provided with a coaxial cylinder, the upper end is connected with the switch, and the lower end is connected with a trapezoidal body. The two ends of the reset spring are fixed to the other side of the sliding block switch and the other side of the shell respectively. The utility model has the advantage that a user or equipment can select whether to recover the power supply of a certain electrical circuit or not when the power is returned after the power is cut off. Potential safety hazards possibly caused by sudden starting of equipment after power recovery are avoided.

The invention discloses farmland water conservancy irrigation electrical protection equipment which comprises a base, an electrical box is fixedly connected to the top of the base, electrical equipment is installed in the electrical box, vertical rods are fixedly connected to the four corners of the top of the electrical box, a top plate is fixedly connected to the ends of the four vertical rods, and a conical protrusion is integrally arranged on the top of the top plate. Anti-collision mechanisms used for buffering external collision force are arranged on the outer sides of the electrical box and the conical protrusion at equal intervals, supporting rods are fixedly connected to the four corners of the top of the base and fixedly connected with the top plate, waterproof telescopic cloth is fixedly connected to the bottom of the top plate, and telescopic sleeves are integrally arranged on the four corners of the waterproof telescopic cloth. When the electrical box is collided by external force, the protection plates are stressed to extrude the arc-shaped sliding rods, so that the springs are compressed, the collision force can be effectively buffered under the elastic action of the springs, and the external force is prevented from directly acting on the electrical box; in short, the device has the advantages of being high in automation degree, good in waterproof effect, capable of prolonging the service life of equipment and achieving remote control and good in heat dissipation effect.

The utility model discloses a waterproof outdoor electrical protection box, which belongs to the technical field of protection boxes and comprises a protection box body, an outer frame turning over in the horizontal direction is hinged to the open end of the protection box body, a sealing door turning over in the vertical direction is hinged to one side of the outer frame, and a locking piece is arranged between the sealing door and the outer frame. The side face of the outer frame is provided with a supporting piece used for supporting and keeping the sealing door in the horizontal state, side blocking pieces used for sealing the side face are symmetrically arranged between the outer frame and the sealing door, and the waterproof performance can be achieved during rush repair in rainy days.

The utility model discloses an electrical protection cabinet with a movable base, and relates to the technical field of electrical protection cabinet bodies, the electrical protection cabinet comprises a fixing structure, the fixing structure comprises a first fixing plate, one side of the first fixing plate is provided with a mounting groove, the periphery of the top of the first fixing plate is fixedly provided with a limiting piece, and one side of the limiting piece is provided with a rubber pad. A bolt is arranged on the outer side of the first fixing plate, a mounting plate is arranged in the mounting groove, a second fixing plate is arranged on the side, away from the first fixing plate, of the mounting plate, a fixing piece is fixed to the bottom of the second fixing plate, a double-threaded rod is arranged on the fixing piece, a square groove is formed in the side, away from the first fixing plate, of the double-threaded rod, and a square block is arranged in the square groove. The first fixing plate and the second fixing plate are matched to support and fix the electrical protection cabinet body, and meanwhile, the mounting plate is arranged to adjust the distance between the first fixing plate and the second fixing plate, so that the size limitation of fixing the electrical protection cabinet body is avoided.

The invention relates to an interactive comfort system (1), particularly intended to be installed inside the passenger compartment of a vehicle, in particular a motor vehicle, the system comprising: a heating structure (50) having: at least one resistive layer (51), at least two electrodes (52) in electrical contact with the resistive layer so as to allow an electric current to flow through the resistive layer (51) between these two electrodes, a capacitive sensor (90) arranged to detect, in a detection zone (96), the presence of a part of a passenger, for example an arm, an elbow, a hand or a finger of the passenger, the capacitive sensor having at least one capacitive electrode (91), an insulating layer disposed between the capacitive sensor (90) and the heating structure (51), arranged to electrically insulate the capacitive sensor (90) from the resistive layer (51) and from the electrodes of the heating structure,at least one active electrical protection track (95), this track being printed on the insulating layer and configured to protect the capacitive sensor (90) from electromagnetic interference. Figure 4,