2682results about "Emergency protective devices" patented technology

The invention provides a vertical fuse which comprises a fuse tube body and a fuse body, a first containing cavity is formed in the fuse body, a first through hole and a second through hole are formed in the first end face of the fuse tube body, the first end face of the fuse body penetrates out of the first through hole to form a first electrode, and the second end face of the fuse body penetrates out of the second through hole to form a second electrode; the maximum diameter of the first end face of the fuse tube body and the maximum diameter of the second end face of the fuse tube body are both smaller than the length of the fuse tube body in the first direction. The first end face is parallel to the second end face, and the first direction is the direction from the first end face to the second end face or from the second end face to the first end face; the first accommodating cavity is filled with an arc extinguishing medium, and the arc extinguishing medium wraps the melt. Therefore, the electrodes are arranged on the same end face of the fuse tube body, so that the area of a fused mounting surface is reduced, the transverse projection area of the fuse in a circuit is further reduced, and the longitudinal space utilization rate of equipment is improved.

The invention relates to the technical field of fuses, and discloses a novel high-voltage fuse, which comprises a fuse mechanism and a control module, and is characterized in that the control module is electrically connected with the fuse mechanism; the fuse mechanism comprises a contact part, an exhaust contact seat part, an insulator, a fuse carrying part and a fiber grating sensor, the lower part of the insulator and the lower part of the fuse carrying part are connected through the exhaust contact seat part, the fiber grating sensor is located in the fuse carrying part, and the upper part of the insulator and the upper part of the fuse carrying part are connected through the contact part. According to the invention, the sensing precision of the operation state of the fuse is improved.

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.

A functional module F is presented for coupling to an electrical / electronic switching device S, which functional module F can be influenced by means of an actuating element B, the electrical / electronic switching device S and a radio transmitter, wherein the functional module F has components necessary for its function on at least one electrical circuit board, and wherein the functional module F has at least one functional module-side interface CF connected to the electrical circuit board, which is suitable for interaction with a switching device-side interface CS, via which interfaces CF, CS actuators, for example lights, blinds or sockets, can be controlled, or sensors, for example touch sensors, can be evaluated, and whereby a control signal is transmitted between the functional module F and the electrical / electronic switching device S, wherein the functional module-side interface CF has an output channel for providing the control signal,which can be influenced both via the radio transmitter and via the actuating element OA, , What is special is that the function module F with its function module-side interface CF can be inserted into the switchgear-side interface CS in the manner of a plug-in connector, and that the function module F has a defined cabling so that the function module F can be influenced by means of the actuating element OA and radio transmitter for influencing actuators, wherein the function module F has recesses that can be engaged with projections HV of the electrical / electronic switchgear S.

The invention relates to the technical field of state monitoring, in particular to an intelligent fuse comprising a monitoring module, and the fuse comprises a data analysis module, a steady state recognition module, a temperature analysis module, a coupling calculation module and a state calibration module. According to the method, time consistency verification and corresponding matching are carried out on temperature and current sampling, abnormal interference is eliminated in a stable current-carrying interval, a continuous sequence is formed, and a definite time relation is established between thermal response and a current-carrying state by combining analysis of accumulated deviation and change turning of the temperature along with time; the abnormal trend of slow evolution is amplified and presented, correction is carried out according to the direction consistency of multi-segment time difference change, progressive features before fusing are recognized in advance, early warning continuity and operation decision reliability are improved, misjudgment is reduced, continuous updating of state evaluation is supported, and stability of a control closed loop is improved.

A fuse group assembly may include a first bus bar, a second bus bar in a stepped arrangement with the first bus bar, a first support plate arranged on the second bus bar, a second support plate in a stepped arrangement with the first support plate, a first fuse having a first end electrically connected to the first bus bar and a second end supported by the first support plate, and a second fuse having a first end electrically connected to the second bus bar and a second end supported by the second support plate.

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 relates to a connecting device (1) for electrically connecting at least two terminals, comprising: - at least one connecting element (2) designed for conducting current between the at least two terminals, with at least two contact areas (2a, 2b) for electrical and mechanical connection to the respective terminal, wherein the connecting element (2) comprises a metallic material (3) and a passivation layer (4) that forms at least in one fault condition and encloses the metallic material (3), and - a flux (8) that can be thermally activated by heat input due to a fault condition, which is designed to remove the passivation layer (4) in order to cut through the connecting element (2) in the molten area (2c) in the case of a fault condition that melts only the metallic material (3).

The invention discloses an ultra-miniature patch fuse structure and a production process thereof. A fuse comprises a ceramic substrate, an inner electrode part, a terminal electrode part, a fuse wire part and a covering protection layer. An inner electrode groove is formed in the side wall of the ceramic substrate, and the inner electrode part comprises a first inner electrode and a second inner electrode; the first inner electrode and the second inner electrode are respectively provided with a fuse wire fixing groove. According to the production process, inner electrode grooves are formed in the two ends of a ceramic substrate, a first inner electrode and a second inner electrode are constructed through metallization wall-hanging treatment, a fuse part is inserted into a fuse fixing groove and connected through thermal ultrasonic or hot pressing bonding, and a protection layer is printed and cured to enhance the insulation performance. According to the invention, through cooperation of the fuse wire fixing grooves, accurate limitation and anti-drop protection of fuse wire component connection points are realized, and the structural stability and the electrical connection reliability between the fuse wire component and the first inner electrode and between the fuse wire component and the second inner electrode are improved.

The invention provides an intelligent fuse, and belongs to the technical field of circuit protection, and the intelligent fuse is characterized in that an upper housing is provided with at least one excitation chamber, the excitation chamber is internally provided with at least one excitation part and at least one impact part, and the excitation part releases high-pressure gas when receiving any one of an external trigger signal and an internal trigger signal; the lower shell is provided with at least one cooling cavity; the current-conducting plate is arranged between the upper shell and the lower shell, and the impact part moves towards the direction where the cooling cavity is located under the thrust action of the high-pressure gas so as to cut off the current-conducting plate; the self-control module is arranged outside the shell and comprises a current detection unit and a processing unit, and the current detection unit is used for detecting a current signal on the conductive plate; the processing unit is used for generating an internal trigger signal according to the current signal. The beneficial effects of the invention are that a dual-trigger mechanism and redundancy design of an internal trigger signal and an external trigger signal are adopted, so that normal action can still be ensured when any signal fails, and the breaking reliability is improved.

A pressure-actuated switch having a pressure port, a diaphragm, a range spring, an actuator plate, a differential plate, and an electrical switch. A certain pressure level moves the diaphragm against the range spring at the pressure port and thus deflects the actuator plate. The actuator plate is coupled to the electrical switch via a snap spring, wherein the electrical switch can be switched on or off via the deflection of the actuator plate and the snap spring. The differential plate controlled by a differential spring is connected to the actuator plate and supports the actuator plate in a first portion of movement, wherein the differential plate is decoupled from the actuator plate in a second portion of movement of the actuator plate.

The present invention discloses an intelligent fuse control terminal with a one-key sequential control function, comprising an insulator, wherein the lower end of the insulator is rotatably connected to a rocker arm, a fuse tube and an electric push rod are respectively connected to the upper right side of the rocker arm, an upper moving contact is installed at the upper end of the fuse tube, an upper static contact is arranged above the fuse tube, an incoming line contact is arranged at the adjacent position of the upper static contact, and an outgoing line contact is arranged at the lower end of the insulator; a mounting bracket is installed at the middle part of the insulator, a motor cover is installed on the upper side of the mounting bracket, a servo motor is installed inside the motor cover, and a rotating rod is connected to the output end of the servo motor. The intelligent fuse control terminal with a one-key sequential control function realizes the one-key sequential control in the controller program, and can execute the opening and closing commands in an automatic sequence according to the opening sequence parameters, thereby avoiding the risk of human operation errors and safety accidents.

The invention discloses a full-range drop-out fuse which comprises a base, the upper end and the lower end of the base are fixedly connected with an upper contact seat and a lower contact seat respectively, and a fuse carrier is installed between the upper contact seat and the lower contact seat. The fuse carrier is of a split type and comprises a current limiting part and a spraying part which are connected with each other in a detachable mode, and a first fuse wire in the current limiting part and a second fuse wire in the spraying part are connected between the upper contact seat and the lower contact seat in series. The fuse carrier comprises a current limiting part and an injection part which are connected in series, and has the advantages that a current limiting type fuse limits peak current under large fault current and does not inject combustible materials, and an injection type fuse is reliably switched on and off under the condition of small fault current, so that full-range fault current protection is realized; and meanwhile, the system has the advantages of good compatibility, low improvement cost and the like.

The utility model relates to an intelligent excitation fuse (100). The intelligent excitation fuse (100) comprises a partially hollow insulating shell; at least one copper bar (106) in which a plurality of fractures (106A) are laid; a plurality of breaking devices (200); the control circuit board (300) is used for triggering the plurality of on-off devices (200) to carry out on-off actions; the signal fuse wire (301) is connected with at least one copper bar (106) in parallel, and the signal fuse wire (301) is electrically connected with the control circuit board (300) through a signal connecting wire (302), so that when current flowing through the signal fuse wire (301) exceeds preset threshold current, the signal fuse wire (301) is fused and is electrically connected with the control circuit board (300); wherein the control circuit board (300) responds to the fusing of the signal fuse (301) and sends an action signal to the plurality of on-off devices (200) which are connected in series.

The utility model relates to the field of electric power facilities, in particular to a stable and reliable drop-out fuse, which comprises an insulator, an upper terminal, a lower terminal, a fuse tube, an upper static contact and a lower static contact. A fuse is arranged in the fuse tube, an upper moving contact is arranged at the upper end of the fuse tube, a lower moving contact is arranged at the lower end of the fuse tube, and the lower moving contact is movably connected to the lower static contact through a trunnion; the lower moving contact is also provided with an elastic wire pressing plate which assists in tensioning the fuse wire. The lower moving contact is provided with a first line pressing terminal, the lower static contact is provided with a second line pressing terminal, and the lower end of the fuse is led out from the fuse tube, penetrates through the first line pressing terminal and then is connected with the second line pressing terminal. And an insulating sheath is arranged at a position where the fuse wire is connected with the elastic wire pressing plate. The sheath is additionally arranged at the contact position of the tail end of the fuse wire and the fuse wire pressing plate to form insulation isolation, so that current does not pass through two sides of the trunnion by the fuse wire, and the heating defect caused by poor contact between the trunnion and the lower static contact is avoided.

An exemplary embodiment of an active / passive automotive fuse module in accordance with the present disclosure may include: an electrically insulating base; a fuse plate including a busbar portion disposed on a top surface of the base above a projectile cavity formed in the base, the fuse plate further including a fusible portion electrically connected to the busbar portion and adapted to disconnect when a current flowing through the fuse plate exceeds a current rating of the active / passive automotive fuse module, the active / passive automotive fuse module further including a pyrotechnic interrupter (PI) disposed on top of the base and including a projectile located above the busbar portion, the PI being configured to drive the projectile through the busbar portion when the PI is actuated.

The utility model relates to an integrated shunt excitation device. The integrated shunt excitation device specifically comprises an excitation fuse, a trigger module and a shunt module, the excitation fuse comprises an electronic ignition assembly, a piston and a conductive piece. The diverter module is connected in series in the conductive part to replace the part, needing to be disconnected, of the conductive part, the trigger module is connected with the diverter module and the electronic ignition assembly, and the trigger module starts the electronic ignition assembly according to a received current signal monitored by the diverter module when the current signal exceeds a set threshold value. The trigger module sends a trigger signal to the electronic ignition assembly to enable the electronic ignition assembly to act to release high-pressure gas to drive the piston to disconnect the diverter module and disconnect the main loop. According to the invention, the diverter replaces the to-be-disconnected part of the conductive member, so that the conductive member is relatively simple in structure, and the excitation device is smaller in size.

An excitation fuse with a melt structure comprises a shell, an excitation source, at least one conducting bar and the melt structure. A first cavity and a second cavity filled with an arc extinguishing medium are arranged in the shell; the cavity where the driving force releasing end of the excitation source is located is communicated with the first cavity, and the conducting bar penetrates through the shell and the first cavity; the melt structure is arranged at least partially in the arc extinguishing medium in the second cavity or penetrates through the arc extinguishing medium in the second cavity; the fuse body structure comprises a fuse body connected with the conducting bar in parallel and insulation isolation pieces, at least one insulation isolation piece is arranged on the fuse body in the current direction, the fuse body penetrates through the insulation isolation pieces, and the insulation isolation pieces are used for partially or completely isolating electric arcs at fractures of the fuse body and releasing gas and cooling the electric arcs at the high temperature of the electric arcs. The excitation fuse uses a melt structure, so that the breaking performance of the fuse and the insulating performance and the voltage resistance after breaking can be improved.

A protective element includes: a first fuse element part including a first fuse element; a second fuse element part including a second fuse element; an insulating enclosure having a fusing space in which the first fuse element is positioned and a cutting space in which the second fuse element is positioned; and a slider disposed to be movable within the fusing space toward a second fuse element side. The fusing space is divided into a first space and a second space which interpose the slider, the first fuse element being positioned in the first space, and a second space being connected to the cutting space. When a fusion current flows to the first fuse element, and as pressure in the first space rises, the slider is configured to move toward a second fuse element side such that a cutting part of the slider cuts the second fuse element.

The invention provides a power storage device and a current interruption method. A power storage device is provided with a power storage device module, a voltage sensor, a current sensor, an explosion fuse, and a controller. The voltage sensor detects a voltage value of the power storage device module. The current sensor detects a value of a current flowing through the power storage device module. The explosion fuse is connected in series with the power storage device module. In the controller, a voltage condition and a current condition are set. The voltage condition is predetermined according to a voltage value detected by the voltage sensor. The current condition is predetermined according to the current value detected by the current sensor. The controller operates the explosion fuse when both a voltage condition and a current condition are satisfied.

Aspects of the disclosure relates to tooling for molding a polymer housing for a vacuum bottle. The tooling comprises first and second mold halves, each defining one-half of a negative impression of the housing. The housing includes a cylindrical core with multiple spaced annular sheds extending outward, arranged as alternating large- and small-diameter sheds. The polymer housing encapsulates at least 70% of a rigid cylinder having two flanges separated by a narrower central body. Each mold cavity includes cylindrical end cavities with diameters larger than a central core cavity diameter, corresponding to the housing's core geometry. This arrangement enables accurate formation of the alternating shed structure, precise encapsulation of the rigid cylinder, and reliable dimensional control at the core and ends, facilitating robust vacuum bottle construction.

The invention discloses a sheet-shaped alloy melt structure and a fuse, the sheet-shaped alloy melt structure comprises a sheet-shaped alloy melt and a shape memory alloy sheet, the sheet-shaped alloy melt is provided with at least two wide sections along the length direction, a narrow section is formed between the two adjacent wide sections, and the cross section area of the narrow section is smaller than that of the wide section. The shape memory alloy sheet is connected to the surface of the wide section, the shape memory alloy sheet is in a plane shape in a low-temperature phase state, and the shape memory alloy sheet is attached to the surface of the wide section; the shape memory alloy sheet is bent in a high-temperature phase state; when the shape memory alloy piece is heated to the phase transition temperature, acting force acting on the wide section is generated, when the narrow section is heated to the melting point temperature, the narrow section is broken under the action of the acting force, the narrow section is broken to form a crack, the shape memory alloy piece is bent and drives the wide section to be bent and deformed, and the distance between the cracks is increased. The fuse can effectively restrain electric arcs, and is high in breaking capacity, high in thermal response sensitivity and long in service life.

To provide Knob (KoD) devices and related systems, methods, and devices.SOLUTION: A KoD device includes at least one electrode including an electrically conductive material. The KoD device also includes a base assembly configured to be positioned between a touch screen of a touch screen device and the at least one electrode. The at least one electrode is configured to be positioned in engagement proximity to a touch sensor of the touch screen device through the base assembly.SELECTED DRAWING: Figure 20

A battery disconnect unit includes: a fuse; a busbar connected to a terminal of the fuse; and a heatsink that is in contact with the terminal of the fuse. The terminal of the fuse is located between the busbar and the heatsink. The terminal of the fuse, the busbar, and the heatsink are fastened together by a screw that is an example of a fastening member.

The utility model relates to the field of circuits, in particular to a magnetic induction current sensor integrated excitation fuse device which comprises an excitation fuse, a trigger module, a magnetic induction current sensor module and a shunt module. The excitation fuse comprises an electronic ignition assembly, a piston and a conductive piece. The shunt module is connected in series with the conductive piece; the magnetic induction current sensor module is arranged on a magnetic field path of the conductive piece; the shunt module and the magnetic induction current sensor module are electrically connected with the trigger module respectively and send monitoring current signals to the trigger module respectively; the trigger module is electrically connected with the electronic ignition assembly; when the trigger module judges that the monitored current signal exceeds a set threshold value, the trigger module sends a passive trigger signal to the electronic ignition assembly, the electronic ignition assembly releases high-pressure gas, and the piston is driven to cut off the conductive piece. The magnetic induction current sensor module is not directly connected into a main loop, and the loop resistance is not increased; and the active trigger power supply and the standby power supply are used as backups for each other, thereby improving the working reliability.

The utility model relates to a fuse for a charging pile, and relates to the technical field of fuses, the fuse comprises an insulating shell and a fuse piece located in the insulating shell, baffle plates are arranged at openings at two ends of the insulating shell, and connecting pieces are fixedly arranged on the side surfaces, far away from the insulating shell, of the baffle plates; one baffle is provided with a sand filling hole and a plugging button for plugging the sand filling hole; the edge of an opening in the end part of the insulating shell is provided with a fixed sinking groove for the baffle plate to insert, the periphery of the insulating shell is provided with a locking through hole communicated with the fixed sinking groove, and the periphery of the baffle plate is provided with a locking screw hole; a locking screw which penetrates through the locking through hole and then is screwed into the locking screw hole is arranged outside the insulating shell, and a receding sinking groove for clamping a nut part of the locking screw is formed in the edge of an opening in the outer side of the locking through hole; after the baffle is installed, the exposed outer side face of the baffle is flush with the end face of the insulating shell, and the influence of collision on the joint of the baffle and the insulating shell is reduced.

The invention discloses an intelligent fuse, which comprises a conductor pre-fracture, an explosion device, a cutting device and an amplitude limiter, and is characterized in that the amplitude limiter is connected in series between the explosion device and a conductor at the front end of the conductor pre-fracture and is used for transmitting a generated voltage drop signal to the explosion device when an external circuit is short-circuited; the explosion device comprises two external signal input ports, one external signal input port is connected with the amplitude limiter, and the other external signal input port is connected with the external signal receiver; and the energy generated by the explosion device cuts off the conductor pre-fracture. Based on a transformer-free circuit structure, intelligent control of a circuit trigger signal and an external trigger signal on the fuse is realized, high and low voltage isolation is realized, the current can be automatically cut off at the moment when an external control signal is received or the current exceeds a detection threshold, and finally the purpose of improving the safety of an electrical system is achieved.

The present application relates to a high-breaking-power fuse, comprising a protective tube; a contact blade, which is sealed and arranged on both ends of the protective tube, and is used to form an arc-extinguishing cavity on the inner side of the protective tube; a fuse, which is arranged in the arc-extinguishing cavity; a conductive connecting piece, which is arranged at the disconnection point between the fuse and the circuit where the contact blade is located; an overload installation box, which is arranged in the arc-extinguishing cavity, and the overload installation box is provided with a mounting cavity and a connecting hole; a connecting rod, one end of which is arranged in the mounting cavity, and the other end slides in and out of the connecting hole, and an arc-extinguishing filling area connected to the connecting hole is formed between the mounting cavity and the connecting rod; a connecting solder, which is arranged between the fuse and the end of the connecting rod outside the mounting cavity, and is used to conduct the disconnection point between the fuse and the circuit where the contact blade is located; a breaking spring, which is connected to the connecting rod and is used to retract the connecting rod into the mounting cavity; and an arc-extinguishing medium, which is filled with overpressure and arranged in the arc-extinguishing cavity. The present application has the effect of improving the arc-extinguishing performance of the fuse.

The invention discloses a melt, a fuse and electrical equipment, in the melt of the fuse, the overcurrent area of a fusing region is smaller than that of a non-fusing region, the fusing region is made of a first material, the non-fusing region is made of a second material, and at least one of the strength and hardness of the first material is higher than that of the second material. The impact of the mechanical property of the material is considered, and the regional design of hardness and strength is adopted, so that the thermal stress is greatly relieved and released, the defect of weak structure of a fusing region is overcome, the problem of life damage under large pulse current is solved, and the anti-fatigue performance of the fuse is enhanced.

The invention relates to the field of circuit protection, in particular to a barrel type excitation fuse which comprises an insulating shell, a conductive barrel, a conductive end cover, an excitation source and a main piston made of insulating materials, the conductive barrel is arranged in the insulating shell in an attached mode, the conductive end cover is fixedly connected to the end of the insulating shell and seals the end of the insulating shell, and the excitation source is arranged in the main piston. The conductive end cover is in conductive contact with the conductive cylinder; the piston is located in the electric conduction barrel, the excitation source penetrates through the insulating shell and the electric conduction barrel, the driving force releasing end of the excitation source is located in the electric conduction barrel, a sealed cavity is formed between the driving force releasing end of the excitation source and the main piston, and when the excitation source acts according to a received trigger signal, driving force is released. And the main piston is driven to move along the conductive cylinder, and the conductive cylinder is disconnected. The cylindrical excitation fuse is compact in structure, small in size and high in impact resistance.