201results about "Battery cutoff switches" patented technology

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.

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.

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 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.

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.

A pyrotechnic switching element (1) is shown. In order to be able to actively short-circuit an electric machine in a stable manner, it is proposed that the pyrotechnic switching element (1) has at least three electrical connections, each for a phase line (L1, L2, L3) with phases offset from each other, and that the bridging element (6) in the bridging position (7b) electrically short-circuits the current conductors (4a, 4b, 4c) as a common neutral point (S) for the phase lines (L1, L2, L3).

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.

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).

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

Apparatuses and methods for implementing contactor opening and fusing strategies in a power distribution unit are disclosed, including a power distribution unit comprising: one or more contactors coupled to one or more charging systems; one or more active fuses in a circuit connecting the one or more contactors to a battery system; and a microcontroller configured to: receive one or more current values; determine whether the one or more current values meet a first set of predetermined current thresholds; in response to determining that the one or more current values meet the first set of predetermined current thresholds, trigger the one or more active fuses; determine whether the one or more current values meet a second set of predetermined current thresholds; and in response to determining that the one or more current values meet the second set of predetermined current thresholds, signal the one or more contactors to open.

The present disclosure relates to a battery system and an electric vehicle including the battery system. The battery system includes a high-voltage battery having a plurality of interconnected battery cells for providing a high-voltage output at battery system terminals of the battery system, and a battery disconnect element for disconnecting the high-voltage battery from at least one of the battery system terminals in the event of a fault or a crash, wherein the battery disconnect element is powered by the high-voltage battery.

The invention relates to a contactor device and a high-voltage power supply system comprising the same. The contactor arrangement (100) comprises a contact arrangement comprising at least one movable bus bar (106, 108) and at least one fixed bus bar (102, 104), where the at least one movable bus bar (106, 108) has a first contact area and the at least one fixed bus bar (102, 104) has a second contact area, and at least one actuation element (118), where the at least one movable bus bar (106, 108) has a second contact area and the at least one fixed bus bar (102, 104) has a third contact area. The actuating element is configured to change at least a state of the contactor device (100) from an open state to a closed state, in which the first contact region is electrically isolated from the second contact region, and in which the first contact region is conductively coupled to the second contact region, and from the closed state to the open state. The contact device also includes a first current sensing element (152) having a first predetermined resistance that is integrally formed with one of the bus bars (102, 104, 106, 108) included in the contact device.

This breaker device includes: a casing; an igniter disposed in the casing; a conductor including a separating portion disposed below the igniter; and a pusher located between the separating portion and the igniter and configured to move together with the separating portion from a first position to a second position located below the first position. The casing includes: a first casing made of a metal, including a first fixing portion, and configured to house the igniter and the pusher located at the first position; and a second casing made of a metal, including a second fixing portion, and configured to house the pusher that has moved to the second position and the separating portion that has moved downward together with the pusher. The first fixing portion and the second fixing portion overlap each other, come into contact with each other, and are fixed to each other.

Apparatuses and methods for implementing contactor opening and fusing strategies in a power distribution unit are disclosed, including a power distribution unit comprising: one or more contactors coupled to one or more charging systems; one or more active fuses in a circuit connecting the one or more contactors to a battery system; and a microcontroller configured to: receive one or more current values; determine whether the one or more current values meet a first set of predetermined current thresholds; in response to determining that the one or more current values meet the first set of predetermined current thresholds, trigger the one or more active fuses; determine whether the one or more current values meet a second set of predetermined current thresholds; and in response to determining that the one or more current values meet the second set of predetermined current thresholds, signal the one or more contactors to open.

A current breaker for automotive safety systems has a separating punch and a conductor formed with at least one localized decrease in thickness constituting a weakened separating point severable by the separating punch. This current breaker is made by overmolding the conductor in a plastic-injection mold with an encapsulation by a method having a first step of forming the separating point of the conductor in the plastic-injection mold before or during overmolding and a second step of forming with the mold above and below the conductor in the encapsulation a passage fully exposing the separating point and dimensioned to hold the separating punch.

To provide a current interruption circuit and a current interruption system capable of reducing erroneous disconnection of a fuse.SOLUTION: When the resistor Rp is energized, the ignition type fuse is cut. IPD231 and 232 are provided on both sides of the resistor Rp, and when both are turned on, the resistor Rp is energized. The current sensor 241,242 detects a current of a current path in which the ignition-type fuse is provided. The overcurrent determination circuit 251 determines an overcurrent based on the output of the current sensor 241. The second overcurrent determining circuit 252 determines an overcurrent based on the output of the current sensor 242. IPD231 is turned on based on the determination result of the overcurrent determination circuit 251. IPD232 is turned on based on the determination result of the overcurrent determination circuit 252.SELECTED DRAWING: Figure 1

To provide an electric circuit breaker device that reduces deformation of a conductor piece when a projectile cuts the conductor piece. There is provided an electric circuit breaker device including a housing serving as an outer shell member, the housing configured to enclose an accommodation space extending in one direction, an igniter provided in the housing, a projectile disposed in the housing, the projectile being configured to be projected from one end side of the accommodation space by energy received from the igniter, the projectile being configured to move along an extending direction of the accommodation space, and a conductor piece held by the housing, the conductor piece forming a part of an electric circuit, the conductor piece including a cutoff portion between a first connection end portion as one end portion and a second connection end portion as the other end portion, the cutoff portion being configured to be cut off by movement of the projectile, the cutoff portion being disposed across the accommodation space. The conductor piece includes a deformation suppressing portion configured to suppress deformation when the cutoff portion is cut off by the projectile.

A power cutoff device includes a pyro-fuse device, a receiver, and a controller. The pyro-fuse device is provided in a power system of a vehicle and configured to shut off the power system when an abnormality of the vehicle is detected. The receiver receives a signal for requesting driving of the pyro-fuse device from the outside of the vehicle. The controller drives the pyro-fuse device when the receiver receives the signal.

The invention discloses a breaker, power distribution equipment and a vehicle, and relates to the technical field of breakers, and the breaker comprises a pedestal which is provided with an arc extinguishing cavity; the sealing cover is arranged at the opening of the arc extinguishing cavity, and a first channel penetrating through the sealing cover is arranged in the sealing cover; the through-flow copper bar is parallel to the sealing cover, the through-flow copper bar penetrates through the sealing cover in the direction perpendicular to the thickness of the sealing cover, the through-flow copper bar comprises a thinned part, and the thickness of the thinned part is smaller than that of other parts of the through-flow copper bar; the piston is at least partially contained in the first channel, the projection of the piston in the thickness direction of the sealing cover at least partially coincides with the thinned part, the side wall of the arc extinguishing cavity surrounds the piston, an annular air channel is formed between the side wall of the arc extinguishing cavity and the piston, and the annular air channel surrounds the periphery of the piston in the circumferential direction of the piston; and the first flame extinguishing structure comprises an internal channel, the internal channel is used for communicating the annular air channel with the external space of the first flame extinguishing structure, and the first flame extinguishing structure is located in the arc extinguishing cavity. The breaker provided by the invention can improve the arc extinguishing efficiency.

An electrical contactor 10 including a contactor assembly 12 including a housing 20, an electromagnet coil 16 and an electrically conductive core 18 disposed within the housing, the core being movable relative to the coil under influence of an electromagnetic force produced by the coil, and an electrically conductive bridge 22 connected to a lower end of the core 18 and movable with the core, an interrupter assembly 14 including a base 50 located below the bridge 22 and having a trench 52 formed in a top surface thereof, an input bus bar 28 and an output bus bar 30 disposed on the base on opposing sides of the trench, and a pyrotechnic interrupter 54 disposed within the trench. The pyrotechnic interrupter 54 includes a plunger 56 and pyrotechnic ignitor 58 disposed below the plunger, wherein, when the pyrotechnic ignitor is actuated, the plunger forcibly drives the bridge away from the input bus bar and an output bus bar to break an electrical connection therebetween.

An improved circuit interruption system for interrupting a primary circuit includes a secondary circuit disposed in a magnetic field generated by current passing through the primary circuit. In response to a threshold change to the charge induced in the secondary circuit, a circuit interrupting device opens the primary circuit. The secondary circuit uses a coil to achieve this by being responsive to a magnetic field generated by the primary circuit. A ferromagnetic core is disposed within the coil to direct the magnetic flux. The coil circumscribes the ferromagnetic core, which circumscribes a portion of the primary circuit. The circuit interruption system may include a pyrotechnic device.

A pyrotechnic current breaker (1) for severing a conductor (3) by means of a severing piston (2) has a housing, which comprises a housing upper part (8) and a housing lower part (10). The conductor (3) extends through the housing between the housing upper part (8) and the housing lower part (10), and the severing piston (2) is guided in a cavity (7, 9) in the housing. The current breaker (1) also has an ignition unit (13) for driving the severing piston (2). A quenching means (18) is provided for suppressing or quenching the arc produced during the severing. According to the invention, the quenching means (18) is situated in a recess (17) on the periphery of the severing piston (2). A seal between the severing piston and the housing, more particularly an o-ring (20-21) positioned in an additional recess (19, 22) in the severing piston (2), is preferably provided adjacent to the recess (17).

Apparatuses and methods for high voltage contactors are disclosed. In a particular embodiment, a contactor includes a high voltage input terminal; a high voltage output terminal; and a switch having a first closed position, a second closed position, and an open position, wherein the switch establishes a first high voltage current path between the high voltage input terminal and the high voltage output terminal in the first closed position and a second high voltage current path between the high voltage input terminal and the high voltage output terminal in the second closed position.