323results 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.

Provided in the present application are a circuit breaker and a power apparatus. The circuit breaker comprises an upper housing, a lower housing and a bus bar. The upper housing comprises a piston cavity, wherein a piston is accommodated in the piston cavity, and the piston moves after being subjected to force to cut off the bus bar. The lower housing comprises an arc-extinguishing cavity, wherein an arc-extinguishing grid is accommodated in the arc-extinguishing cavity. The circuit breaker further comprises at least one air chamber and an air channel, wherein the air chamber is arranged on the upper housing and / or the lower housing, one end of the air channel is in communication with the arc-extinguishing cavity, the other end of the air channel is in communication with the air chamber, a first gap is provided between the arc-extinguishing grid and a first side wall of the lower housing, and the air channel comprises the first gap. Thus, high-temperature and high-pressure gas generated due to arc extinguishing in the lower housing can be guided to the air chamber for cooling, thereby reducing potential safety hazards. Moreover, compared with the way of directly discharging the high-temperature and high-pressure gas to the outside, other devices in the power apparatus cannot be damaged.

Provided is an excitation protection device acting step by step with a single excitation source, including a shell body, an excitation source, impact devices and a conductor, wherein at least two impact devices respectively located in different cavities are provided in the shell body, one side of the impact device is provided with one excitation source, and the impact device and the excitation source are respectively in sealed contact with the cavities where the impact device and the excitation source are located; and the excitation source drives the impact devices to displace simultaneously or successively, and at least one of the impact devices breaks the conductor during the displacement process.

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.

An exemplary embodiment of active / passive automotive fuse module in accordance with the present disclosure may include an electrically insulating base, a fuse plate including a bus bar 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 bus bar portion and adapted to open when an amount of 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 atop the base and including a projectile positioned above the bus bar portion, the PI configured to drive the projectile through the bus bar portion upon actuation of the PI.

The present application relates to a circuit breaker comprising a cut-off mechanism configured to cut off a conductor extending through the circuit breaker. The cut-off mechanism includes a primary cut-off mechanism and a secondary cut-off mechanism, and the cut-off mechanism comprises a primary operation phase and a secondary operation phase. In the primary operation phase, the primary cut-off mechanism slides along the secondary cut-off mechanism to execute primary cutting operations, and in the secondary operation phase, the primary cut-off mechanism drives the secondary cut-off mechanism to execute secondary cutting operations.

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.

The present invention relates to a pyrotechnic switch, comprising: a housing (10), the housing being formed by assembling a first housing part (11) and a second housing part (12); and at least one pyrotechnic actuator (32), the at least one pyrotechnic actuator being arranged in the housing (10); wherein at least one of the first housing part (11) or the second housing part (12) comprises a metal reinforcement (16) and a plastic body (C2) overmolded onto the metal reinforcement (16), and characterized in that the plastic body (C2) comprises: a first part, the first part being made of a first plastic material, and a second part, the second part being made of a second plastic material.

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 present invention relates to a housing (10); the electrical conductor to be interrupted (20); a piston (30) arranged in the housing (10) for breaking the electrical conductor (20), the piston (30) being movable between an idle position and an operating position in which the electrical conductor (20) is broken; a pyrotechnic actuator (40) disposed within the housing (10) for moving a piston (30) from an idle position to an actuated position, The piston (30) has a proximal end (30A) disposed on a side of the pyrotechnic actuator (40) and a proximal end (30B) opposite the proximal end (30A); The piston (30) is characterized by at least one gas passage (31) disposed between a distal end (30B) and a proximal end (30A).

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 switch for opening a current conduction path is provided. The switch includes an actuator, a conductor, and a movable part. The conductor has a length extending between two ends and a width extending between two sides, and has connecting contacts at two ends and at least one switch area arranged between the connecting contacts. Each switch area extends between two sides of the conductor and includes a hole passing through the conductor, at least one shearable portion defined by the hole and the closest side of the two sides of the conductor, and an inserted conductor inserted into the hole and electrically contacting the conductor through the hole, so as to define a current conduction path along the length of the conductor via the inserted conductor and at least one shearable portion of each switch area. The movable part is aligned with at least one switch area and is arranged to move toward at least one switching area in a first direction when actuated by the actuator. When moving in the first direction, the movable part is configured to at least partially move the inserted conductor from the hole through its first end, and then shear at least one shearable portion of the conductor through its corresponding second end, so as to disconnect the current conduction path, wherein the first end extends farther in the first direction than the corresponding second end.

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 invention relates to a fuse device for high-voltage applications, comprising a housing (10); an actuation chamber (12) and an extinguishing chamber (14), which are formed in the housing (10); a busbar (16) which extends through the housing (10) and between the actuation chamber (12) and the extinguishing chamber (14); and a separating element (34) which can be displaced by means of an actuator (32) and the separating surface (84) of which, said separating surface facing the busbar (16), has different distances to the busbar (16) in the cross-section in the non-triggered state of the separating element (34). According to the invention, the busbar (16) has a second predetermined breaking point (78), wherein a first predetermined breaking point (76) is arranged opposite a section (86) of the separating surface (84) of the separating element (34) when viewed in the movement direction of the separating element (34), said section having the shortest distance to the busbar (16) in the non-triggered state of the separating element (34), and in the triggered state, the busbar section (42) between the first predetermined breaking point (76) and the second predetermined breaking point (78) is displaced into the extinguishing chamber (14) so as to be completely separated from the adjoining busbar sections (80). Thus, an arc can be extinguished in a faster manner.

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.