18results about "Battery cutoff switches" patented technology

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).

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.

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 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.

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).

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 current breaker has a central cavity (2), wherein a main conductor passes through this central cavity (2) and a separating piston can be moved in this central cavity by triggering a detonator, with the result that the main conductor is severed by the separating piston after the detonator has been triggered. The current breaker also has a fuse conductor (5) connected electrically in parallel with the main conductor. According to the invention, the fuse conductor (5) is fitted around the central cavity (2) of the current breaker, and at least one separating element (4) is provided for separating the fuse conductor (5) after the main conductor has been separated, with preferably two, four or eight separating elements (4) being provided, which are uniformly distributed over a periphery around the central cavity (2). The separating points of the fuse conductor (5) can be located in an extinguishing agent bed (8) and / or at the edge of an extinguishing agent bed (8'). According to one embodiment, the separating elements (4) can be moved radially in relation to the central cavity (2) and are driven by the movement of the separating piston. For this purpose, the separating elements (4) project into the central cavity (2) and have an oblique surface (3) there.

According to aspects of this disclosure, an ignition device for an excitation fuse and a battery system including an excitation fuse are provided. The ignition device for an excitation fuse includes: a detonating fuse, comprising a high-voltage side to which an operating voltage is applied, a low-voltage side connected to ground, and an internal resistor between the high-voltage side and the low-voltage side; a low-voltage side switch that outputs an ignition start signal to the low-voltage side of the detonating fuse; a constant current supply connected to the low-voltage side of the detonating fuse and supplying a constant current to the internal resistor of the detonating fuse; a high-voltage side switch configured to interrupt the operating voltage applied to the high-voltage side of the detonating fuse during detonating fuse diagnostics; and a resistance monitoring unit configured to monitor the voltage difference across the internal resistor of the detonating fuse.

Power line disconnecting device (1), comprising: a housing (2) surrounding a chamber (4), wherein: the housing (2) has an inner wall (24) facing the chamber (4) and deformable at least in sections; and a movable disconnecting element (3) arranged on the housing (2) and / or within the chamber (4) for disconnecting a power line;- an actuator (6) arranged on the housing (2) and / or within the chamber (4) for triggering a movement of the separating element (3), wherein - the housing comprises a housing upper part (21) and a housing lower part (22), wherein the housing lower part (22) has a housing lower part bottom (223) facing the chamber (4) and at least one housing lower part side wall (221) facing the chamber (4), which forms a partial section of the housing inner wall (24), and wherein - the housing lower part (22) comprises a housing lower part outer wall (222) which surrounds the housing lower part side wall (221) and the housing lower part bottom (223), characterized in that the elasticity or plasticity of the housing lower part side wall (221) is greater than the elasticity or plasticity of the housing lower part outer wall (222).

This invention relates to a fuse device for high-voltage applications, the device 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 located between the actuation chamber (12) and the arc-extinguishing chamber (14); and a separation element (34) detachable from the actuation chamber (12) by means of an actuator (32) towards... The busbar (16) is displaced, and the busbar segment (42) is displaced into the arc-extinguishing chamber (14) by means of the separating element to cut the busbar (16) at a first predetermined break point (74); and a damping element (68) is disposed on the base (62) of the housing (10) in the arc-extinguishing chamber (14), against which the separating element (34) abuts after the fuse device is triggered. The object of the invention is to extinguish the arc more quickly by squeezing the arc. This object is achieved by completely isolating the space (118) from the busbar segment (42) adjacent to the first predetermined break point (74) and fixed in the housing (10) by means of the separating element (34) and the damping element (68) after the fuse device is triggered. The separated busbar segment (42) is disposed in the space (118).

This fuse unit (1) comprises: a bus bar (3) that acts as a conductor and in which a section to be cut (3b) is set; a case body (2) that supports two points sandwiching the section to be cut; a cutting section (4) that is disposed in a first space (6) that is an internal space of the case body and is formed on one side with respect to the bus bar, the cutting section acting as an insulator; and a reconnection section (5) that is disposed in a second space (7) that is an internal space of the case body and is formed on the side of the bus bar opposite to the first space, the reconnection section acting as a conductor, wherein the cutting section has a tip section (4c) that cuts the bus bar into a first portion (14) and a second portion (15) at the section to be cut and is able to move into the second space, and the reconnection section has a first connection section (5b) that comes into contact with the first portion and a second connection section (5c) that comes into contact with the second portion.

The present invention relates to a pyrotechnic circuit breaker comprising: - a housing (10), - an electrical conductor (20), - an interrupting piston (30) which is movable and arranged to interrupt the electrical conductor (20) when switching from a non-operating position to an operating position, - at least one array (40) arranged to support at least a portion of the electrical conductor (20) during which the electrical conductor (20) is interrupted by at least a portion of the interrupting piston (30), - at least one pyrotechnic actuator (50) arranged to switch the interrupting piston (30) from a non-operating position to an operating position, characterized in that the array (40) includes a cavity (43) designed to apply plastic deformation to at least one supported portion of the electrical conductor (20) during which the electrical conductor (20) is interrupted by the interrupting piston (30).

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

The present invention provides an electric circuit breaker device that can suppress an increase in power of a power source and easily break an electric circuit even when resistance of a cut portion is reduced. An electric circuit breaker device 600 includes a broken portion 400 constituting a part of an electric circuit, in which the broken portion 400 includes base pieces 430 on both sides and a separation piece 420 connected between the base pieces 430, and the electric circuit breaker device 600 includes a pressing connection portion 431 that connects, while pressing, contact surfaces of the base piece 430 and the separation piece 420, and is configured such that the separation piece 420 is moved by a power mechanism while being in contact along a contact surface with the base piece 430 and is separated from the base piece 430, and thus connection between the base pieces 430 is broken.

This breaker device includes: a casing; a pusher located inside the casing and including a recessed portion; an igniter storing gunpowder, including a lid portion between the gunpowder and the pusher, being disposed in the recessed portion, and being configured to generate gas; a protective portion provided to the casing or the igniter and located inside the recessed portion; and a conductor including a separating portion located below the pusher. When the pusher receives pressure of the gas generated by the igniter, the pusher moves the separating portion downward. The lid portion includes an opening portion configured to open by receiving the pressure of the gas. The lower end of the protective portion is located at a level below the lower end of the lid portion.

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.

A monitoring method is implemented in a vehicle comprising a power battery to supply the vehicle's electrical equipment via an interface device including at least one contactor having open and closed states, and first and second sensors measuring, respectively, the current flowing out of the power battery and the voltage downstream of the contactor. This method includes a step (10-40) in which, if the measured voltage falls below a first threshold following a command to place the contactor in its open state, a selected electrical device is requested to draw current from the power battery, and, if the measured current is above a second threshold, an alert is generated indicating a malfunction of the contactor. Figure 3

Pyrotechnic power line disconnection devices (10) are known, comprising a housing (12) having a guide channel (20), a pyrotechnic propellant charge (70) which can be ignited by means of an igniter (72), a disconnection body (30) which is arranged in the guide channel (20) in an axially movable manner and can be driven by means of the propellant charge (50), a bus bar (40) having a bus bar section (44) that can be disconnected, against which the disconnection body (30) can be moved by igniting the propellant charge (50), an extinguishing chamber (22) which is formed on an opposite side of the bus bar (40) in relation to the disconnection body (30) and into which a bus bar section (44) that can be disconnected from the bus bar (40) can be moved under the action of the disconnection body (30), wherein a braking structure (50) is arranged in the extinguishing chamber (22), which braking structure the busbar section (44) strikes after being disconnected and which absorbs the kinetic energy of the busbar section (44) by deformation. According to the invention, the braking structure (50) has a multistage deformation section (50A) which brings about controlled and relatively positionally accurate braking.