132results about "Battery cutoff switches" patented technology

A circuit breaker including a pyrotechnic element configured to ablate or cut a portion of the circuit so as to break the circuit, thereby breaking the circuit. The portion of the circuit to be broken may be specially formed to be readily ablated or cut, and / or may be a current load-based fuse.

A circuit breaker including a pyrotechnic element configured to ablate, tear, or cut a portion of the circuit. The portion of the circuit to be broken may be formed to be readily broken and / or may be a current load-based fuse. Also, the circuit breaker may be configured to ensure predictable progressive lateral tearing of the portion of the circuit to be broken; the circuit breaker may optionally be configured so that substantially all of the pyrotechnic element's output is focused on breaking the circuit; and the circuit breaker may optionally include a positive displacement mechanism that, after actuation of the pyrotechnic igniter, prevents the circuit breaker from inadvertently re-closing.

An electric circuit breaker apparatus is used in a vehicle including an electric circuit having a converter and a storage battery. The electric circuit breaker apparatus interrupts power supply from the storage battery to the converter when a collision of the vehicle is detected. The electric circuit breaker apparatus includes a power supply circuit breaker driven by a low explosive type actuator, which is actuated when a collision of the vehicle is detected. Actuation of the power supply circuit breaker interrupts a power supply path connecting a positive terminal of the storage battery to the converter and grounds a portion of the power supply path closer to the converter than the interrupted portion.

A current sensor 73 detects a current flowing through a first buss bar 11. When a current value detected by the current sensor 73 became equal to or greater than a threshold current value, a CPU 74 outputs a driving control signal to a driving circuit 77, and the driving circuit 77 operates an, ignitor 29 through a second substrate 65 and a terminal 50. Therefore, the ignitor 29 ignites, a second projection 41 is melted by heat of a heating agent 27, a compression spring 34 is expanded and a thermite case 26 jumps up. Thus, electrical connection between the thermite case 26 and the first and second buss bars 11, 19 is interrupted. Further, since an outer container 61 in which the current sensor 73, the CPU and the driving circuit 77 are accommodated is integrally assembled with the cap 14a and the resin case 14b in which the thermite case 26, the ignitor 29, the compression spring 34 and the second projection 41 are accommodated, non-operational state of the ignitor 29 due to disconnection of electric wire is not generated.

A circuit breaker including a pyrotechnic element configured to ablate, tear, or cut a portion of the circuit. The portion of the circuit to be broken may be formed to be readily broken and / or may be a current load-based fuse. Also, the circuit breaker may be configured to ensure predictable progressive lateral tearing of the portion of the circuit to be broken; the circuit breaker may optionally be configured so that substantially all of the pyrotechnic element's output is focused on breaking the circuit; and the circuit breaker may optionally include a positive displacement mechanism that, after actuation of the pyrotechnic igniter, prevents the circuit breaker from inadvertently re-closing.

A pyromechanical disconnecting device having an improved electric current conductor rail. The electric current conductor rail includes a center section perpendicular to the path of a disconnecting tool, and a first and second side section extending perpendicular from the center section. The electric current conductor rail further includes a first and second end piece connected respectively to the first and second side sections apart from the center section. Each of the end pieces is connected along a fold perpendicular to the center section and includes a bore for receiving a fastener to attach the electric current conductor rail to a housing.

The invention relates to a pyromechanical disconnecting device having a housing (2) in which an electrical conductor (3) is arranged, having a cutting plunger (5) and a cutting chisel (8) made of plastic arranged thereon for severing the electrical conductor (3), and having a pyrotechnic igniter (1) in which a pyrotechnic charge is arranged for driving the cutting plunger (5), the cutting chisel (8) having an edge that slides along a mating edge of the housing (2) or of a component (4) of the housing (2) when the cutting plunger (5) or the cutting chisel (8) is driven and when the electrical conductor (3) is severed.In order to achieve better cutting power, it is proposed that the edge of the cutting chisel (8) and / or the mating edge of the housing (2) or of a component (4) of the housing (2) comprise an inserted structural element (6, 7) having a greater hardness than plastic.

Electric circuit breaker forming a breaker switch in particular, in which a conducting blade is broken by the tripping of a pyrotechnic activation gas generator. According to the invention, a gas generator (15) with pyrotechnic actuation is designed so as to emit gases resulting from the combustion of a charge, and the generator is associated with a variable-configuration chamber (17) and a breakable conducting blade (19) constitutes a back wall of this chamber, the breaking of the blade under the actuation of the gases causing the interruption of the electric circuit of which the blade forms part.

A pyromechanical disconnecting apparatus, in particular for battery shutoff in a motor vehicle, includes a housing (4) in which there is arranged an electrically conductive conductor bus (2), which is fashioned so as to be severable at a predetermined cut position (1) by a cutting chisel (6) driven by a pyrotechnic propellant charge. The conductor bus (2) is clamped in on its side facing away from the cutting chisel (6) by a locking bolt (5) inserted into the housing (4), and a receiving space (15) is arranged in the locking bolt (5) in the region of the predetermined cut position (1), into which receiving space the cutting chisel (6) bends the region of the conductor bus (2) severed by it, and the locking bolt (5) forms an external surface of the housing (4). In order to diminish cracking of the locking bolt and housing and for purposes of inspection to determine whether the disconnecting apparatus has tripped, it is proposed that a recess (13) be arranged in the locking bolt (5), which recess transpicuously connects the receiving space (15) with the atmosphere.

An electric line cutter device for high voltage busbars has a two-part housing, a piston, an igniter and a busbar. The upper housing includes a cylinder, cuboid or prism chamber. The lower housing also includes a cylinder, cuboid or prism chamber. The piston is contained inside one of either the upper housing chamber or the lower housing chamber. Upon igniting the igniter, the piston breaks a portion of the busbar moving the piston and the portion of the busbar into the opposite chamber thereby stopping the electric current flow. The piston is at least partially formed as an insulator to prevent electric discharge. The piston design together with chamber design includes integrated “squeeze areas” and “blow channels” for the appearing arc. A channel system outside or from inside the piston allow the pyro gases to push the arc plasma into a filter system to cool down the gases.

Circuit breaker for motor vehicle power lines, having a first planar connection flap, a second connection flap and a connection portion which electrically connects the connection flaps and which forms a desired breaking location. A particularly simple production with low material use can be achieved by the connection flaps and the electrical connection portion closing an explosion chamber of a pyrotechnical igniter in such a manner that the desired breaking location bursts owing to the gas pressure of the pyrotechnical igniter brought about in the event of actuation.

A conduction-breaking device breaks conduction between a pair of devices in an electric circuit. The conduction-breaking device includes a conductive body having a cuttable portion, an arc-extinguishing chamber having a pair of fixed blades, a gas generator, a cutting member having a pair of movable blades, and a deforming mechanism. When the cuttable portion is cut at two positions by the fixed blades and the movable blades, the cuttable portion forms a separated piece, which is separated from the electric circuit, and first and second remaining portions, which remain connected with the electric circuit. The separated piece has cut ends at opposite ends. The deforming mechanism deforms the separated piece such that the cut ends of the separated piece are located on a leading side in a moving direction of the cutting member with respect to a part of the separated piece between the cut ends.

The arrangement for disconnecting at least one of a plurality of battery modules in an automotive battery comprises a device arranged to detect that at least one battery module is to be disconnected, and a bypass switch arranged at each battery module, wherein the bypass switch arranged at the detected at least one battery module is controllable to bypass the at least one detected battery module via a bypass path. The arrangement further comprises a disconnect switch arranged at each battery module, wherein the disconnect switch arranged at the at least one bypassed battery module is controllable to disconnect the at least one detected battery module from remaining battery modules, either simultaneously as, or after, the bypassing of the detected battery module.

A conduction breaking device is provided that uses gas from a gas generator to move a cutter block in the thickness direction of a cuttable portion, thereby cutting the cuttable portion between the moving cutter block and a cutting edge portion of a cutting chamber. The cutter block is attached to the cuttable portion such that, before generation of gas by the gas generator, a part of the cutter block is located in the cutting chamber and at a position close to the cutting edge portion in a direction along the surface of the cuttable portion.

A safety device for an electrochemical storage cell or a module of electrochemical cells, said safety device comprising at least one means for detecting anomalous operation of said storage cell or of a storage cell in said module, said detection means for detecting being associated with a pyrotechnic device, said pyrotechnic device being associated both with at least one means for shearing a portion of an electrical connection strip of said storage cell or of said module, and with at least one means for bypassing the portion which can be sheared.

A pyromechanical battery pole disconnect element, includes a housing (1) in which an electrical conductor is located, a pyrotechnic active element (14) including a breaking piston with a disconnect element (7) to sever the electrical conductor at an isolating point (11), and a pyrotechnic charge to drive the disconnect element (7). All of the current-conducting components except the active element (14) are combined to form a one-piece battery terminal clamp element (5).

Disclosed herein are efficient mechanical fuse devices that are capable of functioning at high current levels. These devices comprise mechanical features configured such that the fuse devices have a non-triggered state, which allows current to flow through the device, and a triggered state, which does not allow current to flow through the device. In some embodiments, the devices are configured such that a certain pre-determined current level flowing through the device will generate a sufficient electromagnetic field to cause the mechanical elements to transition the fuse device into the triggered state and thus interrupt a connected electrical circuit, device or system. In some embodiments, these devices can also comprise hermetically sealed components. In some embodiments, the fuse devices can comprise pyrotechnic features.

The present invention relates to a battery system (100) comprising a battery (101) designed to supply at least two consumers (140, 141) connected in parallel of a high-voltage network (103), which battery is connected at one of the high-voltage tes (130, 131) thereof to at least two fuses (110, 111). In this way, in each case, one of the at least two fuses (110, 111) is assigned to one of the at least two consumers (140, 141) and can be connected to the assigned consumer (140, 141). The battery system (100) comprises at least one switching unit (155) with two switching states. In one state of the switching unit, in which the at least two consumers (140, 141) are connected to the high-voltage terminals (130, 131) of the battery (101), said switching unit switches into a first switching state of the two switching states upon application of an operating current flowing across the assigned consumer (140, 141), said operating current also flowing through each fuse (110, 111), and upon triggering one of the at least two fuses (110, 111), switches from the first switching state into a second switching state of the two switching states, in which second switching state the at least one switching unit interrupts residual current flowing across the battery (101), the high-voltage terminals (130, 131) of the battery (101) and each consumer (140, 141) whose assigned fuse (110, 111) has not triggered, and / or switches off any residual voltage applied from the battery (101) across the high-voltage terminals (130, 131) of the battery (101) and a non-triggered fuse (110, 111) to the high-voltage network (103).