242results about "Conductor severing switches" patented technology

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.

An electric circuit breaker device including: an igniter provided in a housing; a projectile disposed in an accommodation space formed in the housing and extending in one direction, the projectile being configured to be projected along the accommodation space by energy received from the igniter; a conductor piece provided in the housing and forming a part of an electric circuit, the conductor piece having, in a part of the conductor piece, a cutoff portion to be cut off by the projectile moving by energy received from the igniter, the cutoff portion being disposed crossing the accommodation space; and a coolant material positioned on a side of the projectile with respect to the cutoff portion before actuation of the igniter in the accommodation space.

An electric circuit breaker device includes: an igniter provided to a housing; a projectile disposed in an accommodating space formed in the housing, the projectile being to be projected along the accommodating space by energy received from the igniter; a conductor piece that is provided to the housing, forms a portion of an electric circuit, and includes in a portion thereof a cutoff portion disposed crossing the accommodating space and to be cut off by the projectile; and an arc-extinguishing region that is provided in the accommodating space and in which a coolant material is disposed, the arc-extinguishing region being configured to receive the cutoff portion after being cut off. The projectile includes a first projectile configured to cut off the cutoff portion from the conductor piece by being projected by the energy received from the igniter, and a second projectile configured to press, into the arc-extinguishing region, the cutoff portion cut off by the first projectile.

An electric circuit breaker device includes a housing, an igniter, a projectile, and a conductor piece including, between a first connection end portion and a second connection end portion, a cutoff portion to be cut by movement of the projectile, in which a boundary portion with the cutoff portion from which the cutoff portion is cut in the first connection end portion of the conductor piece held in the housing is defined as a first cutting edge portion, and a boundary portion with the cutoff portion from which the cutoff portion is cut in the second connection end portion is defined as a second cutting edge portion, and a groove is formed at a position corresponding to the conductor piece crossing an accommodating space and in a predetermined inter-edge inner wall region positioned between the first cutting edge portion and the second cutting edge portion, in an inner wall surface of the housing.

A circuit interrupter may include a plurality of mounting components comprised of an insulating material for receiving a first busbar and a second busbar component. A circuit interrupter may include an arc chamber for providing a primary arc path for a current between the first and second busbar components. A circuit interrupter may include a pyrotechnic charge and pusher component located in between the first and second busbar components and the arc chamber. The pusher component may be comprised of an insulating material and can be triggered upon detection of a fault to direct ionized particles or resulting gases toward the arc chamber.

An electric circuit switching device includes a housing; an igniter configured to release a combustion gas upon actuation; a tubular space formed in the housing; a projectile having conductivity, including a base body positioned at a first position in the tubular space in an initial state, and configured to be projected in a predetermined projecting direction by energy of the combustion gas; and a pair of first conductor pieces provided inserted, in a spaced apart state, into the tubular space at a position closer to the projecting direction side than the first position. The projectile further includes a pair of protrusions protruding from the base body in the projecting direction. The pair of protrusions of the projectile projected upon actuation of the igniter respectively come into contact with the pair of first conductor pieces, switching the first electric circuit from an interrupted state to a conductive state.

Embodiments of this application provide a power-off apparatus and a power system. The power-off apparatus includes an open / close conductive strip, an interrupt piston, and an electric igniter. The open / close conductive strip includes a movable contact and a fixed contact, the movable contact is electrically in contact with the fixed contact, and at least a part of the movable contact is capable of moving relative to the fixed contact to be separated from the fixed contact. The electric igniter includes a first contact pin and a second contact pin, the first contact pin is electrically connected to the movable contact, and the second contact pin is electrically connected to the fixed contact. The interrupt piston is configured to cut off the fixed contact under driving of explosive pressure generated when the electric igniter explodes. When a current of the open / close conductive strip is greater than or equal to a first current threshold, electric power generated between the movable contact and the fixed contact is used to repel the movable contact from the fixed contact, so that an arc voltage is generated between the movable contact and the fixed contact. The arc voltage is used to drive the electric igniter to detonate, so that the power-off apparatus cuts off the open / close conductive strip through self-driving without a power supply.

An electric circuit breaker device includes: an igniter provided to a housing; a projectile disposed in an accommodating space formed in the housing, the projectile being configured to be projected along the accommodating space by energy received from the igniter; a conductor piece forming a portion of an electric circuit, and includes a cutoff portion crossing the accommodating space and configured to be cut off by the projectile that moves by the energy received from the igniter; a coolant material disposed in an arc-extinguishing region and positioned within the accommodating space while opposing the projectile prior to actuation of the igniter with the cutoff portion interposed between the arc-extinguishing region and the projectile, and configured to receive the cutoff portion cut off by the projectile; and a resin material disposed in the accommodating space and configured to be modified by heat associated with actuation of the igniter.

An electric circuit breaker device includes: an igniter provided to a housing; a projectile disposed in an accommodating space formed in the housing, the projectile being to be projected along the accommodating space by energy received from the igniter; a conductor piece that is provided to the housing, forms a portion of an electric circuit, includes in a portion thereof a cutoff portion to be cut off by the projectile, and is disposed with the cutoff portion crossing the accommodating space; an arc-extinguishing region positioned on a side opposite to the projectile prior to actuation of the igniter with the cutoff portion interposed between the arc-extinguishing region and the projectile, and configured to receive the cutoff portion cut off by the projectile; a first coolant material disposed in the arc-extinguishing region; and a second coolant material disposed between the projectile and the cutoff portion in the accommodating space prior to actuation of the igniter.

A shutdown device includes: a pyro-fuse that includes a bus bar inserted into a power supply path and a piston disposed above the bus bar, the piston moving toward the bus bar to divide the bus bar; and a melting fuse connected in parallel to the pyro-fuse, in which the melting fuse includes a fuse case, a fuse element provided in the fuse case and is fused when an overcurrent flows, and an arc-extinguishing material provided in the fuse case and being in a granular phase, and the fuse element extends along a direction intersecting a direction in which the piston moves.

An electrical circuit of an aircraft including a power supply electrically connected to an electric charge by a conductive element, and a main electrical protection element. The electrical circuit includes a first pyrotechnic switch provided with at least one first initiator element and at least one first mechanical cut-off element, and a second pyrotechnic switch provided with at least one second initiator element and at least one second mechanical cut-off element. The first initiator element and the second initiator element are each electrically positioned in parallel with the at least one main electrical protection element.

A fuse that includes a bus bar and cuts off the bus bar in response to an ignition signal, a first current detector that includes a first resistor and detects a current flowing through the bus bar, and a second current detector that includes a second resistor and detects the current flowing through the bus bar are included, wherein the first resistor and the second resistor are integrated with the bus bar, and a current having the same magnitude as the current flowing through the bus bar flows in the first resistor and the second resistor, and the bus bar is cut off between the first current detector and the second current detector in response to the ignition signal, or the first resistor of the first current detector is cut off in response to the ignition signal.

Safety element, in particular for a motor vehicle power line, comprising - a control circuit and - a pyrotechnic fuse (2), wherein - the control circuit comprising a printed circuit board (24) - at least one measuring sensor, - at least one temperature sensor and - at least one processor (26) evaluating the measuring sensor and the temperature sensor, - the pyrotechnic safety device (2) - a first connecting tab (8a), - a second connecting tab (8b), - a separation point (16) arranged between the connecting tabs (8a, b), and - has a pyrotechnic drive acting on the separation point (16), wherein - the drive (12) has ignition contacts (14) on its side facing away from its explosive surface (22), and characterized in that, - the pyrotechnic fuse (2) is attached directly to the circuit board (24) at least in a form-fitting manner, - that the drive (12) is designed in such a way that it can be triggered both intrinsically and extrinsically, in which - in the event of an intrinsic triggering, the processor (26) applies an ignition voltage to the drive (12) via a connection between the processor (26) and the ignition contacts (14) and - the ignition contacts (14) are set up for connection to an external ignition signal and the external ignition signal is applied to the ignition contacts (14) during external triggering.

An interrupter, a power distribution device, and a vehicle are provided, and relate to the field of interrupter technologies. The interrupter includes: a base having an arc chute; a sealing cover, disposed on one side of an opening of the arc chute, where the sealing cover has a first channel that passes through a thickness direction of the sealing cover, and the first channel communicates with the opening of the arc chute; a current-carrying copper busbar, where the current-carrying copper busbar is disposed in parallel with the sealing cover, the current-carrying copper busbar passes through the sealing cover in a direction perpendicular to the thickness direction of the sealing cover, a sealed structure in which a boss and a clamping slot are matched is formed between the sealing cover and the current-carrying copper busbar, a part that is of the current-carrying copper busbar and that is located in the first channel includes a thinned part, and a thickness of the thinned part is less than a thickness of another part of the current-carrying copper busbar; and a piston, where the piston is at least partially accommodated in the first channel, and a projection of the piston in the thickness direction of the sealing cover at least partially overlaps with the thinned part. In the interrupter provided in this application, the sealed structure in which the boss and the clamping slot are matched is formed between the sealing cover and the current-carrying copper busbar, so that gas tightness of the interrupter can be improved.

The invention relates to an electrical arrangement (100) for protecting an electrical apparatus intended to be located between an electrical power source (101) and an electrical load (102), the arrangement comprising:-a power contactor (120) comprising two contacts (121, 122) intended to be connected to the electrical power source; -at least two Hall sensors (161, 162) configured to measure the current at the input of the power contactor; -a pre-charging circuit (150) intended to be located between the power source and the power contactor and connected to the electrical load; -a relay (140) configured to connect or disconnect the pre-charge circuit; -pyrotechnic breaking means (130) intended to be connected to the power source and to the power contactor; and-a controller (110) configured to receive measurements of the Hall sensor and to open or close the power contactor and the relay.

The invention relates to a disconnect switch (1) for an electrical circuit, in particular for disconnecting an electrical energy storage device from an electrical installation, comprising a busbar (3) via which a first power terminal (4) of the disconnect switch (1) is electrically connected to a second power terminal (5) of the disconnect switch (1), and a disconnecting element (7) for mechanically cutting the busbar (3). The disconnect switch (1) is characterized by an energy absorption element (9) for absorbing thermal energy generated as a result of the cutting, which has a shell (10) made of a polymer material and an energy absorption body (11) made of a mineral material arranged in the shell (10).

The present invention provides an electric circuit breaker device capable of suppressing an increase in power of a power source and easily cutting off an electric circuit while it is possible to cope with an increase in the number of parts to be cut (fuse elements). An electric circuit breaker device includes an accommodation portion, external connection terminals at both sides, a fuse element accommodated in the accommodation portion, and an arc-extinguishing material, wherein the electric circuit breaker device includes a power mechanism configured to apply a tensile force to an end portion of the fuse element to divide the fuse element, and an electrical connection maintaining structure maintaining an electrical connection between the fuse element and the external connection terminal until the fuse element is divided.

A mechanically interrupting and melting combined multi-break excitation fuse, characterized in that it comprises a shell, a cavity is opened in the shell, at least one conductor is arranged in the shell and passes through the cavity; at least one excitation device and an interrupting device are arranged in the shell cavity; the excitation device can receive an external excitation signal to drive the interrupting device to operate, disconnect the conductor corresponding to it and form at least two breaks on the conductor; at least one fuse is arranged in parallel on the conductor; the fuse is connected in parallel with at least one of the breaks, and the fuse is connected in series with at least one break. The excitation fuse of the present invention improves the breaking capacity and arc extinguishing capacity while ensuring the circuit is disconnected.

To provide a smart battery disconnect and protection architecture for airborne high-power modular multi-string battery pack.SOLUTION: The invention provides methods and systems for protection / disconnect of airborne high-power / high-energy high-voltage modular multi-string battery packs (such as battery packs for airborne electric propulsion systems). The methods and systems are based on a dissimilar / redundant distributed battery pack protection architecture and use a smart mid-point battery disconnect cooperating with centralized battery management system. The resulting battery disconnect / protection system is configured to detect bus faults, load faults and string faults and then take appropriate action to isolate the detected fault. For example, in response to a short circuit in one battery string, the faulty battery string may be disconnected from the positive and negative busbars while the remaining battery strings continue to provide power.SELECTED DRAWING: Figure 1

A cutting device (1) is provided with: a housing (20, 30) having a convex part (30a); an igniter (10) capable of generating gas; a pusher (60) located below the igniter; and a conductor (50) having a separation part (51) which is located inside the housing and below the pusher, and which is separated by the pusher that receives the pressure of the gas generated by the igniter. The protruding portion of the housing is located below the separating portion and protrudes upward, and the protruding portion of the housing deforms downward by being pressed by the pusher.

The embodiments of the present application provide a fuse and a circuit system, relating to the technical field of circuit protection. The fuse comprises: a housing, a closed chamber being provided in the housing and being filled with an arc extinguishing filler, and a first conductive terminal and a second conductive terminal which are used as a current input end and a current output end being respectively connected to the housing; a melt which is connected in series between the first conductive terminal and the second conductive terminal, at least part of the melt being disposed through the closed chamber; and an impact apparatus, which is arranged in the housing, is positioned outside the closed chamber, and is configured to act, when receiving an excitation signal, on the melt to generate an impact force to make the melt break in the closed chamber. The fuse in the embodiments is not limited by a fusing current, achieving quick cutting off under different currents or even zero current. The breaking position of the melt is in an arc extinguishing filler environment, so that sparks, arcs etc. cannot leak, and the present invention thus has high safety. In addition, the arc extinguishing filler and the impact apparatus function without interference, so that the present invention has high stability.

An electric circuit breaker device includes a housing serving as an outer shell member and including an accommodation space extending in one direction, an igniter, a projectile configured to be projected from an end side of the accommodation space by energy received from the igniter and move along an extending direction of the accommodation space, and a conductor piece forming part of an electric circuit, the conductor piece being disposed crossing the accommodation space, wherein in the housing, a region defined by an inner wall of the housing holding the conductor piece in the accommodation space serves as a holding region, and the projectile includes: a rod portion extending along the extending direction of the accommodation space and inserted into the holding region; and an elastic portion being a member having elasticity and provided on an outer periphery of the rod portion facing the inner wall of the holding region after the projectile is projected, the elastic portion coming into contact with the inner wall of the holding region when the projectile is projected, and being compressed between the inner wall of the holding region and the rod portion. The lowering of an insulating resistance value is suppressed by preventing the projectile from returning to the igniter side after operation.

This protection device (300) comprises at least two conduction paths (303) and cut-off means (310) arranged on each of the conduction paths. The device comprises a microcontroller (320), which is configured to measure a differential current in the conduction paths with detection means (312), to evaluate a differential fault and to send a trip signal to the cut-off means when a differential fault of the first type is detected. The protection device (300) also includes a test loop (360), which is different from the detection means. The microcontroller (320) is configured to inject, into the conduction paths by means of the test loop, a first test signal representative of the electrical fault of the first type and, together with detection means, to measure the first test signal thus injected into the conduction paths.

An electric circuit cut-off device including a housing, a to-be-cut part, a power source, and a moving body that moves between first and second end portions on opposite sides, a fuse including a fusing portion and an arc-extinguishing material, and a pair of electrode parts connected to terminals on both sides of the fuse. The moving body is configured to cut a piece located between base pieces on both sides of the to-be-cut part and a part of the to-be-cut part and the electrode part come into contact with each other in a state where base pieces on both sides of the to-be-cut part are energized via the cut piece, and the to-be-cut part and the fuse are connected to each other; and thereafter a state in which the base pieces on both sides of the to-be-cut part are energized via the cut piece is cut off.

The present invention relates to a fuse device for high-voltage applications, comprising a housing (10), an actuation chamber (12) and an arc-extinguishing chamber (14) formed within the housing (10), a busbar (16) extending through the housing (10) and between the actuation chamber (12) and the arc-extinguishing chamber (14), and a separation element (34) that moves out of the actuation chamber (12) and against the busbar (16) by means of an actuator (32), wherein a section (42) of the busbar can be moved to the arc-extinguishing chamber (14). In this invention, the busbar (16) is cut at a first predetermined break point (74); and a guide element (48) extends into the arc-extinguishing chamber (14) and has two opposing sidewalls (52, 54) that extend to a support surface (102) that defines the arc-extinguishing chamber (14) along the direction of movement of the separating element (34), and when viewed along the direction of movement of the separating element (34), the two sidewalls extend past opposing longitudinal sides (55) of the busbar segment (42) to be separated. The object of the invention is to extinguish the arc more quickly by squeezing the arc in a gapless manner in the triggered state. This is achieved by providing stiffeners (111) on the two sidewalls (52, 54) that extend along the direction of movement of the separating element (34) and at least along the length of the sidewalls (52, 54) to a support surface (102) that defines an arc-extinguishing chamber (14) along the direction of movement of the separating element (34) and abuts against the support surface when the separating element (34) moves into the arc-extinguishing chamber (14).

Protective device, protective assembly, electrical panel, and associated test method. This protective device (300) includes at least two conduction paths (303) and switching means (310) arranged on each of the conduction paths. The device includes a microcontroller (320), which is configured to measure a differential current in the conduction paths with detection means (312), to evaluate a differential fault, and to send a trip signal to the switching means upon detection of a first-type differential fault. The protective device (300) also includes a test loop (360), which is separate from the detection means.The microcontroller (320) is configured to inject, via the test loop, a first test signal representative of a first type electrical fault into the conduction paths and, simultaneously, to measure, using detection means, the first test signal thus injected into the conduction paths. See Figure 5 for abbreviations.

The circuit breaker may include a plurality of mounting components for receiving the first and second busbar components, the mounting components being made of an insulating material. The circuit breaker may include an arc chamber forming a primary arc path for current between the first and second busbar components. The circuit breaker may include a pyrotechnic charge pusher component located between the first and second busbar components and the arc chamber. The pusher component may be made of an insulating material and may be operated upon detection of a fault to direct ionized particles or derived gases toward the arc chamber.

To provide a cutout gear capable of improving the extinguishing of the arc.SOLUTION: A cutout gear 1 includes: a conductor 2, a housing 9, and a cooling body 3. The conductor 2 is connected to an external electric circuit. The housing 9 has an interior space 90. The interior space 90 accommodates at least a part of the conductor 2. The cooling body 3 is arranged in the interior space 90. The cooling body 3 cools the arc generated in the interior space 90. The cooling body 3 has a porous body 30 consisting of at least one of metal oxides or inorganic oxides.SELECTED DRAWING: Figure 1

To provide an electric circuit breaker device capable of suppressing occurrence of gas leakage after actuation.SOLUTION: An electric circuit breaker device comprises: a housing that includes an accommodation space extending in one direction therein as an outer shell member; an igniter provided on the housing; a projectile arranged in the housing and that moves in an extending direction of the accommodation space by being released from one end side of the accommodation space by an energy received from the igniter; and a conductor piece held by the housing to form a part of an electric circuit and that has a to-be-cut-off part that is cut off by the movement of the projectile between a first connection end part provided at one end and a second connection end part provided at the other end, the to-be-cut-off part being arranged so as to go across the accommodation space. Of the accommodation space, a region demarcated by an inner wall of the housing holding the conductor piece is defined as a holding region. The housing has a housing main body that includes the holding region therein. The main body has: an inside molding part arranged so as to face the holding region; and an outside molding part molded separately from the inside molding part and arranged at an outer peripheral side of the inside molding part.SELECTED DRAWING: Figure 1