257results about "Explosion operated switches" patented technology

The invention provides an active and passive integrated protection intelligent fuse with a single excitation source. The active and passive integrated protection intelligent fuse comprises a first conducting bar, a signal melt, a second conducting bar, a circuit board and an excitation source, the circuit board is provided with the relay and the excitation source. The relay is connected with an external control unit, the excitation source, the first conducting bar and the second conducting bar. The first conducting bar, the signal melt and the second conducting bar are connected in sequence; an isolating layer is arranged on the relay, and the isolating layer is used for shielding crosstalk of external voltage on the relay; after a plurality of pins of the relay are welded on the circuit board, an insulation processing mode is adopted among the plurality of pins; and in an inspection working condition, the external control unit outputs a first inspection signal to the relay so as to control the relay to be switched into an inspection state, and feeds back the working state of the excitation source to the external control unit.

The invention provides an intelligent fuse, and the fuse comprises a conductor which is connected with a melt in series; the internal trigger component is used for generating a first trigger signal; the external trigger signal electric connector is used for coupling a second trigger signal into the intelligent fuse; the sensor is used for detecting the on-off state of the conductor; the processor is used for judging the on-off state of the conductor according to the detection result of the sensor after receiving the first trigger signal or the second trigger signal, and generating a third trigger signal if the conductor is conducted; the explosion device is used for generating explosion gas according to the received trigger signals, the explosion device at least comprises a first explosion device and a second explosion device, the first explosion device generates the explosion gas at least according to two of the first trigger signal, the second trigger signal and the third trigger signal, and the second explosion device generates the explosion gas according to the second trigger signal. The second explosion device at least can generate explosion gas according to the third trigger signal; and a cutting device for cutting the conductor.

The invention belongs to the field of fuses, and provides an intelligent fuse which comprises a conductor used for bearing main loop current; the fuse body is connected in the conductor in series and can be fused when the current of the main loop exceeds a preset threshold value; a first cutting unit configured to cut off the melt based on an external trigger signal; and a second cutting unit configured to cut off the conductor based on an internal trigger signal, where the internal trigger signal is a voltage signal across the melt. The intelligent fuse solves the technical problems that an intelligent fuse in the prior art is complex in structure and high in cost, and is low in cost, small in size, simple in structure and easy to operate.

A battery power disconnect apparatus is disclosed. According to one aspect of the present invention, the battery power-off device comprises: a lower case including an installation space, the upper part of which is open and which is formed along a longitudinal direction, i.e., a first axial direction, and a storage space, the upper part of which is open and which is formed along a longitudinal direction, i.e., a second axial direction; the electronic device includes an installation space, a storage space formed to be separated from the installation space by a partition wall and adjacent to the installation space in a second axial direction, a plurality of relays individually installed in the installation space, a circuit board installed in the storage space through an open upper portion of the storage space, and a control unit installed in the storage space. A lower case including an external connection terminal for electrically connecting to the outside, and an upper case coupled to the lower case so as to be able to cover an open upper portion of the mounting space and an open upper portion of the receiving space; the circuit board is installed in the accommodating space and is configured to be perpendicular to the bottom surface of the accommodating space.

The invention discloses a safety device, a motor controller, a motor assembly and a vehicle, the safety device comprises a first conducting strip, the first conducting strip is provided with a first through hole penetrating through the first conducting strip in the thickness direction of the first conducting strip, and the first conducting strip forms a first weak part at the first through hole, the first weak part is configured to be broken when being impacted; a circuit board; and the Hall chip is arranged on the circuit board, a part of the Hall chip is arranged opposite to at least a part of the first through hole, or a part of the Hall chip is at least partially inserted into the first through hole. According to the safety device, the first through hole can serve as a broken hole of the first conducting strip to facilitate disconnection of the first conducting strip when current is abnormal, and the first through hole can serve as a sampling hole of the Hall chip to achieve dual purposes of the first through hole, so that the number of the first through holes is reduced, the first conducting strip is easy to machine, and the cost is reduced. The machining and production efficiency of the safety device is improved, and the production cost is reduced.

In an example, a circuit includes a transistor and a first amplifier having an output coupled to a control terminal of the transistor. The circuit includes a second amplifier having a second amplifier output coupled to the control terminal of the transistor. The circuit includes a resistor-capacitor network. The circuit also includes a first switch coupled to the first amplifier output, the transistor, and the resistor-capacitor network. The circuit includes a second switch coupled to the second amplifier output, the transistor, and the resistor-capacitor network, where the first switch is configured to couple the first amplifier output to the resistor-capacitor network, and the second switch is configured to couple the second amplifier output to the resistor-capacitor network.

An electrical control system (1) for an electric vehicle charger (2) is specified, comprising - a first contactor (5) connected to a first electrical conductive line (7) of a first type, - a second contactor (6) connected to a second electrical conductive line (8) of a second type, and - a circuit protection means, wherein - the first contactor (5) and the second contactor (6) are configured to be provided between a power source (4) and a charging cable (3) connectable to the electric vehicle, and - the circuit protection means is provided to at least one of the first contactor (5) and the second contactor (6). Further, an electric vehicle charger is specified.

The utility model provides an active and passive integrated fuse, a high-voltage box and a vehicle. The fuse comprises a first active fuse and a passive fuse which are connected in series in a high-voltage main loop of the high-voltage box, wherein the first active fuse is used for triggering fusing after current in the high-voltage main loop meets a preset internal triggering condition; the passive fuse comprises a first explosive and a first cutting part. A first fusing point is arranged on the high-voltage main loop; the first explosive is connected to an external trigger module; the first explosive is used for being detonated based on a first triggering signal sent by the external triggering module after the external triggering module meets a preset external triggering condition, so that blasting waves generated after detonation are used for pushing the first cutting component to cut the first fusing point. According to the active and passive integrated fuse, the size of the fuse installed in a high-voltage box can be reduced, and the use cost is reduced.

The invention relates to the field of switches, in particular to a firework switch which comprises a shell, a busbar and a trigger device, the busbar is connected to the shell, a mounting cavity is formed in the surface of the shell, the busbar divides the mounting cavity into a trigger section and an arc extinguishing section, the trigger device comprises a circuit breaking assembly and an arc extinguishing assembly, the circuit breaking assembly is connected to the inner wall of the trigger section, and the arc extinguishing assembly is connected to the inner wall of the arc extinguishing section. The circuit breaking assembly impacts the busbar to break to form circuit breaking when detecting short circuit or overlarge current, the arc extinguishing assembly comprises a plurality of arc extinguishing blocks, the plurality of arc extinguishing blocks are connected to the inner wall of the arc extinguishing section at intervals, and electric arc generated at the initial moment of busbar breaking impacts the surfaces of the arc extinguishing blocks for cooling to achieve arc extinguishing. Through the arrangement of the arc extinguishing block, the surface of the arc extinguishing block is impacted by an electric arc generated at the initial moment of disconnection of the busbar, and the arc extinguishing block cools the electric arc to realize an arc extinguishing effect, so that a worker is not liable to be influenced by intense radiation and high temperature of the electric arc, safety accidents such as fire disasters or explosion are avoided, and the use safety of the smoke and fire switch is improved.

To provide a cutoff device that can improve the insulation performance.SOLUTION: A cutoff device 1 includes an igniter 10 that generates gas, a pusher 60 located below the igniter 10, a conductor 50 having a separation portion 51 located below the pusher 60 and a holding portion 52 connected to the separation portion 51, a lower housing 30 that is located below the separation portion 51 and is made of metal, an insulating member 110 that is located inside the lower housing 30 and below the separation portion 51, and a resin member 40 whose at least a portion is located inside the lower housing 30 and holds the holding portion 52, and the pusher 60 is configured to separate the separation portion 51 from the conductor 50 under pressure of the gas generated by the igniter 10, and the resin member 40 and the insulating member 110 cover the inner surface of the lower housing 30, an end 113 of the insulating member 110 overlaps with an end 43a of the resin member 40, and a lower end 43b of the end 43a of the resin member 40 is located below an upper end 113a of the end 113 of the insulating member 110.SELECTED DRAWING: Figure 2A

A cutoff device (4) comprises a detection unit (1) and a cutoff unit (2). The cutoff unit (2) is electrically connected to the detection unit (1). The detection unit (1) has a core (10), a coil (11), and a full-wave rectifier circuit (12). The core (10) is formed of a magnetic body. The coil (11) is wound around the core (10). The full-wave rectifier circuit (12) is electrically connected to the coil (11). The cutoff unit (2) has an igniter (21) and a projectile (22). The igniter (21) contains an explosive. The igniter (21) is electrically connected to the full-wave rectifier circuit (12). The igniter (21) is configured so as to be able to ignite the explosive by the electric power generated by the coil (11). The projectile (22) moves in accordance with the ignition of the explosive.

A switch apparatus having pyrotechnic actuator includes a itch body and the pyrotechnic actuator. The switch body includes a static contact part which is fixed and a movable contact part which is movable. The pyrotechnic actuator is an independent modular construction and is fixedly mounted on the switch body from the outside of the switch body. The pyrotechnic actuator can ignite gunpowder to generate an explosive impact force that pushes the movable contact part away from the static contact part according to the load condition of the switch body, so as to assist the switch apparatus to be quickly disconnected.

A contactor device is provided that includes a movable contact configured to selectively open / close an electrical circuit. The movable contact is coupled to the shaft, and the shaft is retained in the closed position by the latch. The movable member is biased away from the latch. During an event, a biasing force that biases the movable member away from the latch is overcome. The movable member disengages the latch from the shaft, allowing the shaft to move to the open position. In an example, a movable member is disposed over an opening of a housing of the contactor device.

The utility model relates to the field of circuit protection and contactors, in particular to an integrated motion type excitation integrated contactor which comprises a movable contact bridge, a static contact, a movable iron core, a static iron core, a movable guide rod, an excitation ignition assembly, a piston, an auxiliary contact assembly and at least one melt, and the melt is connected with the auxiliary contact assembly in series. The two ends of the auxiliary contact assembly and the melt which are connected in series are conductively connected with a static contact of the contactor, in the initial position, the auxiliary contact assembly is arranged in an insulated mode, and the melt and the static contact are not conducted; the excitation ignition assembly acts according to a received trigger signal and drives the piston to displace, the piston drives the static iron core, the movable iron core and the movable guide rod to displace, so that the auxiliary contact assembly is switched on, and after the melt is connected into a main loop in a parallel connection mode and a contact system of the contactor is driven to be switched off, the melt is disconnected in a mechanical mode. Under the normal function of the contactor, the power consumption of the contactor during normal work is reduced, and the breaking capacity of the contactor is improved.

The application provides a single excitation source active and passive integrated protection intelligent fuse, which comprises a first conductive row, a signal fuse body, a second conductive row, a circuit board and an excitation source; the circuit board is provided with the relay and the excitation source, the relay is connected with an external control unit, the excitation source, the first conductive row and the second conductive row respectively; the first conductive row, the signal fuse body and the second conductive row are connected in sequence; the relay is provided with an isolation layer, the isolation layer is used for shielding crosstalk of external voltage to the relay; after a plurality of pins of the relay are welded on the circuit board, the plurality of pins are treated by an insulation treatment mode; in a patrol working condition, the external control unit outputs a first patrol signal to the relay, so as to control the relay to switch to a patrol state, and feedback the working state of the excitation source to the external control unit.

The application relates to the field of switch design, in particular to a pyrotechnic switch. The pyrotechnic switch comprises a shell, a busbar body and at least one detonation cut-off assembly, and further comprises a temperature rise cut-off assembly and a control chip for cutting off the busbar body, the detonation cut-off assembly comprises a detonation cutter and a detonator, the detonation cutter is an insulator, and the detonator generates an impact force to cut off the busbar when detonated; the temperature rise cut-off assembly comprises a temperature rise cutter and a temperature rise deformation piece, the temperature rise cutter is a conductor, and the temperature rise deformation piece is used for deforming to drive the temperature rise cutter to cut off the busbar when the temperature rises; and the control chip is used for receiving an overvoltage signal generated when the temperature rise cutter cuts off the busbar and detonating the detonator. When the circuit current is overloaded, the temperature in the switch rises, the temperature rise deformation piece deforms to push the temperature rise cutter to cut off the busbar body. The overvoltage generated in the cutting-off process detonates the detonator, an impact force generated by the detonator pushes the detonation cutter to cut off the busbar body, and the self-triggering of the pyrotechnic switch is realized.

This current sensor (4) comprises a first yoke (401), a second yoke (402), and a coil (41). The first yoke (401) has an inner surface (4013) that faces a wiring member. The second yoke (402) moves toward the first yoke (401) due to a magnetic field (H1) generated by a current (Ib) flowing through the wiring member. The coil (41) is provided to the first yoke (401) or the second yoke (402).

This application discloses a circuit breaking apparatus and a photovoltaic power generation system, and relates to the photovoltaic energy storage field. When it is detected that a current on a circuit between two power devices connected in series to the circuit breaking apparatus is greater than a preset threshold, in this application, both two switch transistors in a drive circuit of the circuit breaking apparatus are controlled to be turned on. In this case, a large current is input to a breaking switch circuit of the circuit breaking apparatus to control the breaking switch circuit to break the circuit, so that the circuit breaking apparatus cuts off a fault current, to prevent fault spreading and ensure that the circuit is not damaged. In addition, because the circuit breaking apparatus is a "suicide" protection circuit, the drive circuit uses a design of the two switch transistors, and a direct current power supply inputs the large current to the breaking switch circuit only when both the two switch transistors are turned on, and the large current cannot be supplied when any one of the switch transistors is turned on. This helps avoid mistakenly triggering generation of the large current, and can ensure a trusted action of the drive circuit.

Mobile applications with a combined breaker and relay can include a power distribution unit, a current source circuit, and a voltage determination circuit. A combined breaker and relay can be configured to interrupt a motive power circuit for an electrical vehicle system. A combined breaker and relay can include a plurality of fixed contacts, a plurality of movable contacts, a plurality of amateurs, and a current response circuit.

The invention relates to a separating device (3) for cutting off a load current path (4) between two busbars in the event of a fault, comprising: a separating element (21); a pyrotechnic unit (28); a safety device (25); an electrically insulating housing (7); contact elements (5, 6), which form contact points for contacting the respective busbars and of which the second end sections facing each other form electrical contacts (8) for guiding a load current path, the first contact element being at least partially in the form of a hollow cylinder and forming a guide cylinder (20) for the separating element, and the second contact element being arranged in the form of a hollow cylinder. A separating element accelerated in the guide cylinder by the pyrotechnic unit (28) is designed to disconnect the first contact element, to bridge a disconnection (34) of the first contact element in order to take over the load current path (4), and to guide the taken-over load current path by means of a safety device. The invention also relates to an assembly and to a high-voltage on-board electrical system.

Disconnecting device (30, 30') for a battery comprising several interconnected battery cells (21, 22, 23, 24) and a first and a second power supply connection (18, 19), wherein the disconnecting device (30, 30') comprises a disconnecting element (31), in particular a pyrotechnic disconnecting element (31), with which the battery cells (21, 22, 23, 24) or a part thereof can be disconnected from at least one power supply connection (18, 19) in the event of a short circuit, and wherein the disconnecting device (30, 30') further comprises a passive current- or voltage-controlled release circuit (32) which is connected in parallel to one or more battery cells (21, 22, 23, 24), wherein the release circuit (32) is a current-controlled release circuit and the release element (321) is an RC circuit (C1, R11, R12) with a capacitor (C1) serving as a current source, which is connected in series with at least one series resistor (R11, R12),wherein the triggering circuit (32) further comprises an ignition circuit (33) connected in parallel to a triggering element, which is adapted to trigger upon a predefined voltage drop in one or more of the battery cells (21, 22, 23, 24) and to close the current path to the pyrotechnic isolating element (31), and the ignition circuit (33) comprises at least a fuse resistor (R2) and a thyristor (T1), characterized in that the triggering circuit (32) is a current-controlled triggering circuit and the fuse resistor (R2) is smaller than a series resistor (R11, R12).

To provide an electrical switching device capable of minimizing or preventing high pressure breach or rapture of a switching device housing.SOLUTION: An electrical switching device includes: a hermetically sealed housing 102; internal components which are within the hermetically sealed housing, and configured to change the state of the switching device from a closed state and an open state in response to input, the closed state allowing current flow through the device, the open state interrupting current flow through the device; and contact structures electrically connected to the internal components for connection to an external circuit. The housing includes a pressure relief mechanism to allow pressure inside the housing to escape from the housing.SELECTED DRAWING: Figure 1

The purpose of the technology of the present disclosure is to provide a technology for preventing cracks from occurring in a projectile or in a projectile target. This sliding structure comprises: a housing that contains a housing space extending in one direction; an igniter that is provided to the housing; a projectile that is disposed in the housing space, that is launched from one end side of the housing space by means of energy received from the igniter, and that slides along the extension direction of the housing space; and a buffer material that is provided to a terminal end regulation part for regulating the sliding terminus position of the projectile.