95results about "Battery cutoff switches" patented technology

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 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).

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.

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.

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).

An electric circuit breaker device includes: an igniter provided in a housing; a projectile formed in the housing and disposed in an accommodating space extending in one direction, the projectile configured to be projected along the accommodating 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, as a part of the conductor piece, a cutoff portion configured to be cut off by the projectile moving due to energy received from the igniter, the cutoff portion being disposed crossing the accommodating space; and an impact absorbing member disposed in an arc-extinguishing region of the accommodating space, the arc-extinguishing region being located on a side opposite to the projectile across the cutoff portion prior to actuation of the igniter and being configured to receive the cutoff portion cut off by the projectile, the impact absorbing member being formed from a resin material that is modified by heat accompanying actuation of the igniter, the impact absorbing member having flexibility, and being configured to absorb an impact in a case where the cutoff portion having been cut off collides. This provides an electric circuit breaker device that suppresses a decrease in an insulation resistance value after actuation.

The invention relates to a contact device (1) for a high-voltage on-board network of a motor vehicle for providing a reversible electrical connection between at least two on-board network components of the high-voltage on-board network, the contact device has a switching unit (3) for disconnecting the electrical connection in a first switching state and for establishing the electrical connection in a second switching state; an actuating unit (7) for actuating the switching unit (3); a pyrotechnic ignition unit (11) for activating the actuating unit (7); wherein the actuating unit (7), after being activated by a pyrotechnic ignition unit (11), is designed to carry out a switching cycle of the switching unit (3).

A pyrotechnic circuit breaker comprising: - a housing (10), - an electrical conductor (20), - a cutting piston (30), movable and arranged to cut the electrical conductor (20) when transitioning from the rest position to the activated position, - at least one die (40), arranged to support at least a portion of the electrical conductor (20) during at least part of the cutting of the electrical conductor (20) by the cutting piston (30), - at least one pyrotechnic actuator (50), arranged to move the cutting piston (30) from the rest position to the activated position, characterized in that the die (40) comprises a recessed cavity (43) designed to impose plastic deformation on said at least a supported portion of the electrical conductor (20) during the cutting of the electrical conductor (20) by the cutting piston (30). Figure for the abbreviation: Fig. 1

The present disclosure relates to a fuse device, a battery management system, and a battery pack, and is directed to providing a circuit configuration capable of integrally performing a diagnosis function and an ignition function of a fuse serving as a protection element provided in a battery pack. To this end, the fuse device includes a fuse element, a diagnosis current supply circuit connected to the fuse element and configured to allow a diagnosis current for diagnosing the fuse element to flow through the fuse element, and an ignition circuit connected to the diagnosis current supply circuit and configured to allow an ignition current for ignition of the fuse element to flow through the fuse element. Diagnosis and ignition operations of the fuse element are performed by controlling activation of the diagnosis current supply circuit and the ignition circuit.

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.

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.

Battery Protection System and Battery The present invention relates to a protection system (14) for a battery (10), the battery (10) comprising a plurality of modules (12) connected in parallel, the protection system (10) comprising: - a first disconnection device (28), the first disconnection device (28) comprising a contactor (32) having an open position in which the battery (10) is disconnected from all the modules (10) - a second disconnection device (30), the second disconnection device (30) being separate from the first disconnection device (28), the second disconnection device (30) comprising a switching element (40) specific to each module (12), each switching element (40) having an open position in which the module (12) is disconnected from the other modules (12) and from the battery (10). Figure for the abstract: Figure 2

To provide a circuit breaker capable of quickly extinguishing an arc in the event that an arc occurs. [Solution] The circuit breaker (100) comprises a fixed terminal (1), a movable contact (3), a moving mechanism, an igniter (51), and a housing chamber (70). The fixed terminal (1) has a fixed contact (11). The movable contact (3) has a movable contact (31) connected to the fixed contact (11). The moving mechanism moves the movable contact (3) from a closed position where the movable contact (31) is connected to the fixed contact (11) to an open position where the movable contact (31) is separated from the fixed contact (11). The igniter (51) generates gas by combustion. The housing chamber (70) houses the fixed contact (11) and the movable contact (3). In the circuit breaker (100), gas is introduced into the housing chamber (70).

The invention relates to an electric or hybrid motor vehicle comprising a battery with a disconnect device (100), said disconnect device (100) comprising a shaft (1), a moving part (2), a first static part (3a) and a second static part (3b), said moving part (2) comprising a first contact piece (4a) and a second contact piece (4b), said first contact piece (4a) and said second contact piece (4b) having a convex shape, said disconnect device (100) comprising a first magnet and a second magnet, said moving part (2) comprising at least one angle, characterized in that said moving part (2) comprises at least one first ferromagnetic element (7a), said first ferromagnetic element (7a) being positioned at said at least one angle. Figure 1

The present disclosure relates to a fuse device, a battery management system, and a battery pack, and is directed to providing a circuit configuration capable of integrally performing a diagnosis function and an ignition function of a fuse that is is a protective element provided in the battery pack. To this end, a fuse device includes a fuse element, a diagnosis current supply circuit connected to the fuse element can configured to allow a diagnosis current for diagnosing the fuse element to flow through the fuse element, and an ignition circuit connected to the diagnosis current supply circuit and configured to allow an ignition current for ignition of the fuse element to flow through the fuse element. The diagnosis operation and the ignition operation of the fuse element are performed by controlling the activation of the diagnosis current supply circuit and the ignition circuit.

The invention relates to a pyrotechnic current breaker (1) for severing a conductor (9), having a housing (2) which is equipped with a cutting piston (8) and an ignition unit (16) for driving the cutting piston (8). The conductor (9) passes through the housing (2), and when the igniter (18) is triggered, the cutting piston (8) severs a printed circuit board (12) from the conductor (9). According to the invention, at least one spacer (20), preferably three spacers (20), are provided between the cutting piston (8) and the conductor (9), said spacers having the shape of pins and lying on a circle (19), the center of which lies on the central axis (24) of the cutting piston (8). If the side of the spacers facing the printed circuit board (12) is angled such that the region (21) of each spacer (20) adjoining the central axis (24) has a shorter distance to the printed circuit board (12) than the region (23) facing away from the central axis (24), the spacers (20) are pushed towards the central axis (24) when the igniter is triggered such that the spacers can be received in a recess (22). Furthermore, the region (21) adjoining the central axis (24) is easily deformable such that changes in the distance between the cutting piston (8) and the conductor (9) due to temperature fluctuations are compensated for.

The invention relates to a pyrotechnic battery disconnect system (1) having an electric high-voltage battery (2) with a low side at low-voltage potential (LV) and a high side at high-voltage potential (HV), a pyro fuse (4) for electrically disconnecting the high-voltage battery (2), wherein the pyro fuse (4) is connected in series with the high-voltage battery (2) and is arranged on the high side of the high-voltage battery (2) such that the pyro fuse (4) is at the high-voltage potential (HV), and having a control circuit (7) with a trip output for tripping the pyro fuse (4), wherein the pyro fuse (3) cuts off the high-voltage battery (2) upon tripping. According to the invention, the control circuit (7) is likewise arranged on the high side of the high-voltage battery (2) and is at the high-voltage potential (HV) in order, when the pyro fuse (4) trips, to avoid a brief short circuit between the high-voltage potential (HV) of the pyro fuse (4) and the low-voltage potential (LV). Furthermore, the invention comprises an associated operating method.

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 and positioned at a predetermined first position in the tubular space in an initial state; a piston fixed to the projectile and disposed in the tubular space interposedly between the igniter and the projectile, 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 projected integrally with the piston upon actuation of the igniter comes into contact with each of the pair of first conductor pieces, switching the first electric circuit from an interrupted state to a conductive state.

According to an aspect of the present disclosure, there is provided a pyrofuse ignition apparatus (100) including a pyroswitch (88) including a high side (87) to which an operating voltage is applied, a low side (89) to which a ground is connected, and an internal resistance (Rp) between the high side (87) and the low side (89), a low side switch (110) that outputs an ignition start signal (112) to the low side of the pyroswitch, a constant current supplier (120) that is connected to the low side of the pyroswitch and supplies a constant current to the internal resistance of the pyroswitch (Rp), a high side switch (130) configured to turn off an operating voltage applied to the high side of the pyroswitch when diagnosing the pyroswitch (88), and a resistance monitoring unit (140) configured to monitor a voltage difference across the internal resistance of the pyroswitch (Rp).