Rapid circuit breaking device

Abstract

The invention discloses a quick circuit breaking device. The problems that an existing initiating explosive device and ignition device generator is single in control mode and unreliable in circuit cut-off are solved. The device comprises a shell, the conducting bar is inserted into the shell; the ignition device generator is arranged in the shell and used for disconnecting a circuit at the conducting bar; the striking piece is arranged in the shell; the striking piece is provided with a first position for mounting and a second position for driving the fire tool generator to act; the tripping structure comprises a tripping frame, and the tripping frame is provided with a tripping driving assembly, a connecting rod and a lock catch; the lock catch is provided with a first position for locking the striking piece and a second position which is driven by the connecting rod to unlock so as to facilitate free movement of the striking piece; the tripping driving assembly drives the lock catch to move from the first position of the lock catch to the second position of the lock catch through the connecting rod so as to unlock the striking piece. The invention also has the advantages of simple structure, convenience in assembly, reliable action, long service life and the like.

Description

Technical Field

[0001] The invention relates to a quick circuit breaker device. Background Art

[0002] New energy storage cabinets and electric vehicles all contain large-capacity batteries that store large amounts of electrical energy. For example, electric vehicles utilize power batteries, which are typically large and store a large amount of energy. Due to technical limitations, power batteries are prone to explosions in the event of thermal runaway, collisions, or abnormal discharge. Current solutions primarily rely on shutting off the battery's current output in these situations. Two main solutions exist. One employs a series connection of fuses and contactors to detect battery heat, abnormal discharge, and vehicle collisions (such as airbag deployment signals). Upon a predetermined condition, an electrical signal disconnects the contactor, or, in the case of high current, a fuse is blown to disconnect the circuit. However, due to the instantaneous acceleration of electric vehicles and the high risk of collisions and other accidents, traditional thermal cutoffs are often slow or impossible to implement in electric vehicles. The reason is that when an electric vehicle is involved in a major accident, such as a collision, the fault current in the vehicle is either minimal or nonexistent, making traditional fuses unable to open and protect the circuit. Furthermore, they become unusable if the entire vehicle loses power, posing a potential safety hazard. Another approach involves installing an explosive device on the power battery busbar. Upon a predetermined condition, the explosive ignites, using the force of the explosive to forcibly cut the busbar and disconnect the circuit. Currently, various new fuse types have emerged, with the most widely used being the pyrotechnic generator (pyrotechnic generator). The function of a pyrotechnic generator is to protect against the blind spots of traditional fuses. In operation, the pyrotechnic generator is connected in series with a traditional fuse in the circuit. In the event of a short circuit and the traditional fuse is inoperable, the vehicle control system (usually the battery management system (BMS)) sends a signal to the pyrotechnic generator, causing it to operate and disconnect the fuse, thus providing protection. During normal current flow, current flows through the copper busbar, significantly improving its withstand capability compared to traditional fuses. When a short circuit occurs, the pyrotechnic device receives an ignition signal and ignites. The high temperature and high pressure generated by the pyrotechnic device's detonation breaks the copper busbar (the pyrotechnic generator breaks the busbar directly, or sometimes with a cutter), splitting the busbar in two and disconnecting the circuit. Existing pyrotechnic generators typically use a signal control to directly activate the pyrotechnic device to disconnect the busbar. However, if the signal fails or there is a short circuit or overload, the pyrotechnic circuit breaker cannot disconnect the circuit, posing a safety hazard. Summary of the Invention

[0003] In order to solve the problems in the prior art of single control mode and unreliable circuit cutting of existing fire generators, the present invention provides a fast circuit breaker device.

[0004] The technical solution of the present invention is: a fast circuit breaker device, including a housing, and further comprising: A conductive bar is inserted into the housing; The fire generator is located in the housing and is used to disconnect the circuit at the conductive bar; A striking member is disposed in the housing; the striking member has a first position when installed and a second position for driving the fire generator; The tripping structure includes a tripping frame, on which a tripping drive assembly, a connecting rod and a lock are provided; the lock has a first position for locking the striking member and a second position for unlocking the striking member by the connecting rod to facilitate free movement of the striking member; the tripping drive assembly drives the lock from the first lock position to the second lock position via the connecting rod, thereby unlocking the striking member.

[0005] As a further improvement of the present invention, the trip frame is provided with a load buckle, and the lock buckle is provided with a hook portion. When the lock buckle is in the first position, the hook portion is connected to the striking member and limits the striking member. The connecting rod drives the lock buckle to move through the load buckle, so that the hook portion is separated from the striking member and unlocks the striking member.

[0006] As a further improvement of the present invention, the carrying buckle is provided with a top block, which abuts against the lock buckle and keeps the lock buckle in its first position; the carrying buckle and the lock buckle are both hinged to the trip frame, and the connecting rod is provided with an unlocking part, which enables the lock buckle to rotate relative to the trip frame through the carrying buckle and unlocks the striker.

[0007] As a further improvement of the present invention, the tripping drive assembly includes an electromagnet, a first magnetic part, a tripping elastic part and an electromagnetic frame, the electromagnet has a first state when installed and a second position relative to the electromagnetic frame to slide and drive the connecting rod to move; the first magnetic part is arranged in the electromagnetic frame, and the magnetic field force formed by the first magnetic part cooperates with the elastic force of the tripping elastic part to keep the electromagnet in its first state.

[0008] As a further improvement of the present invention, it further comprises a coil wound on the electromagnetic frame, wherein the coil is connected to a signal power supply and drives the electromagnet to slide relative to the electromagnetic frame under the control of the signal power supply.

[0009] As a further improvement of the present invention, it also includes a protective device, which is provided with a second magnetic part that cooperates with the first magnetic part. The position of the second magnetic part relative to the first magnetic part changes to cause the electromagnet to operate; the distance between the second magnetic part and the first magnetic part is adjustable.

[0010] As a further improvement of the present invention, it also includes a protection device, which includes a short-circuit protection mechanism and an overload protection mechanism. The short-circuit protection mechanism and the overload protection mechanism are arranged on the circuit where the conductive bar is located; the short-circuit protection mechanism and the overload protection mechanism are both provided with a push block for driving the connecting rod to move, and the push block is provided with a second magnetic part for driving the trip drive assembly to move.

[0011] As a further improvement of the present invention, the overload protection mechanism includes a bimetallic strip, the short-circuit protection mechanism includes a static iron core, a moving iron core and an iron core frame, the moving iron core is arranged on the iron core frame, and one end of the moving iron core and one end of the bimetallic strip are both provided with the push block.

[0012] As a further improvement of the present invention, the fire generator comprises: First fire shell; a second ignition shell, wherein the second ignition shell cooperates with the first ignition shell to form a powder chamber; the powder chamber is provided with propellant and firing powder for igniting the propellant; A first electrode is inserted into the charge chamber through the first ignition shell; The second electrode is inserted into the charge chamber through the first ignition shell; The first electrode is connected to the second electrode via a bridge wire; the second ignition shell has a first position when installed and a second position when the firing charge and the propellant are excited and separated from the first ignition shell for cutting off the conductive row.

[0013] As a further improvement of the present invention, it also includes a cutter, which is arranged in the shell and driven by the fire generator to move relative to the shell, the cutter has a first position when installed and a second position for cutting off the conductive bus and disconnecting the circuit; the cutter is provided with an arc isolation portion for isolating the arc; the conductive bus includes a wiring portion and a breakable portion, the breakable portion extends toward the wiring portion and forms a cutter groove, the arc isolation portion is cylindrical and extends a cutter portion in the direction of the conductive bus, and the cutter portion is arranged in a ring shape.

[0014] The present invention has the beneficial effects of providing a tripping structure that locks the striking member via a latch. When tripping, the tripping drive assembly unlocks the latch via a connecting rod, allowing the striking member to freely move and drive the fire generator, reliably disconnecting the circuit. The operation is convenient and reliable, with a quick response and reliable control. The present invention also has the advantages of a simple structure, easy assembly, reliable operation, high safety, and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0016] Attachment Figure 2Schematic diagram of the explosion structure when the lock is in the first position according to an embodiment of the present invention.

[0017] Attachment Figure 3 Schematic diagram of the explosion structure when the lock is in the first position according to an embodiment of the present invention.

[0018] Attachment Figure 4 Schematic diagram of the structure of the lock in the first position according to an embodiment of the present invention.

[0019] Attachment Figure 5 Schematic diagram of the explosion structure when the lock is in the second position according to an embodiment of the present invention.

[0020] Attachment Figure 6 Schematic diagram of the structure of the lock in the second position according to an embodiment of the present invention.

[0021] Attachment Figure 7 Schematic diagram of the cross-sectional structure of the lock in the second position according to an embodiment of the present invention.

[0022] Attachment Figure 8 Schematic diagram of the explosion structure of the protection device according to an embodiment of the present invention.

[0023] Attachment Figure 9 This is a schematic cross-sectional view of a fire generator according to an embodiment of the present invention.

[0024] Attachment Figure 10 It is a schematic cross-sectional structural diagram of the trip drive assembly according to an embodiment of the present invention.

[0025] Attachment Figure 11 This is a schematic diagram of the explosion structure at the cutter of an embodiment of the present invention.

[0026] Attachment Figure 12 Schematic diagram of the structure of the conductive bar according to an embodiment of the present invention.

[0027] In the figure, 1, shell; 2, conductive bar; 21, connection part; 22, easy-to-break part; 23, cutting knife groove; 24, cutting groove; 3, ignition generator; 31, first ignition shell; 311, firing pin hole; 32, second ignition shell; 33, powder chamber; 34, propellant; 35, firing powder; 36, first electrode; 37, second electrode; 38, bridge wire; 4, striking member; 41, striking part; 42, arc-shaped part; 5, tripping structure; 51, tripping frame; 52, tripping drive assembly; 521, electromagnet; 522, coil; 523, tripping elastic member; 524, electric Magnetic frame; 525, first magnetic part; 53, connecting rod; 531, unlocking part; 54, lock buckle; 541, hook part; 55, load buckle; 551, top block; 6, protection device; 61, second magnetic part; 62, short-circuit protection mechanism; 621, static iron core; 622, moving iron core; 623, iron core frame; 63, overload protection mechanism; 64, push block; 7, cutter; 71, arc isolation part; 72, cutter part; 8, striker; 9, arc isolation seat; 91, arc isolation plate; 92, arc isolation groove; 93, cutter limit groove; 10, base; 101, support column; 102, bottom groove. DETAILED DESCRIPTION

[0028] The embodiments of the present invention will be further described below with reference to the accompanying drawings: Depend on Figure 1 Combine Figure 2-12 As shown, a fast circuit breaker device includes a housing 1 and further includes: The conductive bar 2 is inserted into the housing 1; The fire generator 3 is provided in the housing 1 and is used to disconnect the circuit at the conductive bar 2; A striking member 4 is disposed within the housing 1; the striking member 4 has a first position when installed and a second position for driving the fire generator 3; a striker 8 is disposed between the striking member 4 and the fire generator 3, and when the striking member is in its second position, the striker strikes the end of the fire generator through the striker, thereby triggering the fire generator to operate; The tripping structure 5 comprises a tripping frame 51, on which a tripping drive assembly 52, a connecting rod 53, and a lock 54 are mounted. The lock 54 has a first position in which it locks the striking member 4 and a second position in which it is unlocked by the connecting rod 53, allowing the striking member 4 to move freely. The tripping drive assembly 52, via the connecting rod 53, drives the lock 54 from the first position to the second position, thereby unlocking the striking member 4. The present invention has the beneficial effect of providing a tripping structure that locks the striking member via the lock. When tripping, the tripping drive assembly unlocks the lock via the connecting rod, allowing the striking member to move freely to drive the pyrotechnic generator. Alternatively, the pyrotechnic generator can trigger the detonation of the firing charge via an electrical signal, reliably disconnecting the circuit. This convenient and reliable operation, fast response, and reliable control are achieved. The present invention also has the advantages of a simple structure, easy assembly, reliable operation, high safety, and long service life. The pyrotechnic generator can cooperate with the cutter or utilize its own structure to function as a circuit breaker, i.e., the pyrotechnic generator can disconnect the circuit at the conductive bar. The present invention can be used in products such as electric vehicles and new energy storage cabinets.

[0029] Further explanation is given in conjunction with the accompanying drawings; the action of the fire tool generator of the present invention can be directly controlled by an electrical signal to cut off the circuit at the conductive row. Usually, a cutter can be set at the fire tool generator. When the fire tool generator is actuated, the cutter is driven to act and disconnect the circuit at the conductive row; of course, the end of the fire tool generator can also be set to a structure that can cut off the conductive row. The automobile control system directly controls the action of the pyrotechnic generator through a control signal to cut off the circuit at the conductive row, that is, the action of the pyrotechnic generator is controlled purely electronically; the triggering form of the pyrotechnic generator of the present invention can also be mechanically triggered, that is, the striking piece hits the firing pin, and the firing pin hits or hits into the first pyrotechnic shell, so that the firing charge is excited. The firing charge is a mixed agent that causes explosion by mechanical impact or adiabatic compression of bubbles. The main components are explosive, combustible and oxidant, and may also contain additives such as desensitizer, sensitizer, adhesive, etc. After being triggered, a hot spot is generated, the explosive decomposes, and then causes a combustion reaction between the combustible and the oxidant. The flame formed is used to ignite the propellant, ignition powder, delay powder or detonator. The propellant usually refers to the gunpowder loaded in the pyrotechnic shell for firing. In this way, even in the event of a power outage or signal failure, a short circuit or overload, the fire generator can be activated through the mechanical tripping structure; in the mechanical trigger, the electromagnet at the tripping drive assembly is in a balanced position under the action of the linear magnetic field force and other forces (elastic force) under normal conditions. When there is a control signal or the current changes, the tripping elastic member quickly activates the electromagnet, driving the connecting rod to move and unlock the striking member. The striking member moves rapidly under the drive of the torsion spring and / or spring, driving the firing pin to move. The firing pin hits the end of the fire generator, causing the firing charge to burn. The firing charge quickly spreads and quickly ignites the propellant. After the propellant is ignited in a relatively closed environment, it quickly releases a large amount of energy to drive the fire generator to operate. The fire generator drives the cutter to cut off the conductive row, so that the conductive row circuit is disconnected. In mechanical triggering, there are also short-circuit and overload protection. The specific principle is similar to the overload or short-circuit protection in the circuit breaker. Structurally, when overloaded, the overload protection mechanism, namely the bimetallic strip (a bimetallic strip is a composite material composed of two or more metals or other materials with suitable properties. The bimetallic strip is also called a thermal bimetallic strip. Due to the different thermal expansion coefficients of the component layers, when the temperature changes, the deformation of the active layer is greater than the deformation of the passive layer, so that the bimetallic strip as a whole will bend toward the passive layer. The curvature of the composite material changes, resulting in deformation) bends and deforms. At this time, the distance between the second magnetic part and the first magnetic part changes (close to the first magnetic part, using the principle of like-charged magnets repel each other), thereby driving the magnetic field force on the electromagnet to change and drive the electromagnet to move, driving the connecting rod to move.During a short circuit, the magnetic field force acting on the moving iron core on the core frame changes, driving the moving iron core to move (deform). This causes the distance between the second magnetic element and the first magnetic element on the moving iron core to change (approaching the first magnetic element, utilizing the principle that like magnets repel). This in turn causes the magnetic field force acting on the electromagnet to change, driving the electromagnet to move, and thus the connecting rod to move. The push block can adjust the distance between the second magnetic element and the first magnetic element, thereby adjusting the sensitivity of the trip drive assembly. The fire generator of the present invention can disconnect the conductive bus circuit through purely electronic control, disconnect the conductive bus circuit when the electronically controlled trip drive assembly is activated, and disconnect the conductive bus circuit in the event of an overload or short circuit by the trip drive assembly. This ensures rapid response, reliable operation, and high safety. The present invention is typically used in electric vehicles. In the event of a malfunction, accident, failure of the control signal source, mechanical overload or short circuit caused by other faults, and various complex operating conditions, the fire generator can operate reliably and quickly when the vehicle battery should be disconnected from output current, ensuring vehicle safety.

[0030] The trip frame 51 is provided with a carrying buckle 55, and the lock buckle 54 is provided with a hook portion 541. When the lock buckle 54 is in the first position, the hook portion 541 is connected to the striking member 4 and retains the striking member 4. The connecting rod 53 drives the lock buckle 54 through the carrying buckle 55, thereby separating the hook portion 541 from the striking member 4 and unlocking the striking member 4. Specifically, the carrying buckle 55 is provided with a top block 551, which abuts against the lock buckle 54 and maintains the lock buckle 54 in its first position. Both the carrying buckle 55 and the lock buckle 54 are hingedly connected to the trip frame 51. The connecting rod 53 is provided with an unlocking portion 531, which, through the carrying buckle 55, allows the lock buckle 54 to rotate relative to the trip frame 51 and unlock the striking member 4. The carrying buckle is provided to abut the lock buckle when the lock buckle is in the first position, ensuring that the lock buckle is securely held in the first position and preventing the striking member from slipping (malfunctioning) due to the upward movement of the elastic member. The load buckle can push the lock buckle when the connecting rod moves, providing convenient and reliable transmission. Both the load buckle and the lock buckle are equipped with torsion springs. The torsion spring on the lock buckle drives the lock buckle to rotate toward the load buckle (toward the lock buckle's second position), facilitating rapid unlocking of the lock buckle. During unlocking, the lock buckle quickly actuates, and the torsion spring on the load buckle pushes the hook portion toward the striking member (causing the lock buckle to approach its first position) for position limiting. The provision of a push block can limit the lock buckle and prevent it from accidentally slipping. A clearance hole can be provided on the lock buckle to clear the push block when the lock buckle is in its second position. The connecting rod and the trip frame slide horizontally together, and the unlocking portion can be configured to reliably drive the load buckle to rotate through the horizontal movement of the connecting rod, thereby quickly unlocking the lock buckle. This provides a simple structure and convenient and reliable transmission. Specifically, the unlocking portion pushes against the lower portion of the load buckle, causing the lock buckle to rotate relative to the trip frame to unlock the striking member. The striking member 4 is provided with a striking portion 41 for propelling the striker 8, and an arcuate portion 42 for actuating the latch, causing the latch to rotate and lock the striking member 4. The arcuate portion facilitates the striking member (when in its first position) to be pressed down past zero (over the downward stroke), causing the latch to flip and engage the striking member. The striking member is equipped with a torsion spring and / or tension spring, enabling rapid actuation and a simple structure, allowing for quick response when the latch is unlocked.

[0031] The trip drive assembly 52 includes an electromagnet 521, a first magnetic member 525, a trip elastic member 523, and an electromagnetic frame 524. The electromagnet 521 has a first state when installed and a second state in which it slides relative to the electromagnetic frame 524 to drive the connecting rod 53. The first magnetic member 525 is located within the electromagnetic frame 524. The magnetic field force generated by the first magnetic member 525 cooperates with the elastic force of the trip elastic member 523 to maintain the electromagnet 521 in its first state. The assembly also includes a coil 522 wound around the electromagnetic frame 524. The coil 522 is connected to a signal power supply and, under the control of the signal power supply, drives the electromagnet 521 to slide relative to the electromagnetic frame 524. Specifically, the first magnetic part is usually fixed on the electromagnetic frame and cooperates with the electromagnet. When the magnetic attraction force generated by the first magnetic part is greater than the tripping elastic part, the electromagnet remains in its first position; in fact, when current is passed through the coil, that is, the control current is sent through the signal power supply, the magnetic field force received by the electromagnet changes at this time, and the electromagnet can be quickly pushed out through the tripping elastic part to drive the connecting rod to move, thereby through the buckle action, the buckle causes the lock to rotate and unlock the striking part.

[0032] The present invention also includes a protective device 6 , which is equipped with a second magnetic member 61 that interacts with the first magnetic member 525 . The position of the second magnetic member 61 relative to the first magnetic member 525 changes, thereby activating the electromagnet 521 . The spacing between the second magnetic member 61 and the first magnetic member 525 is adjustable. This ensures that the movement of the second magnetic member relative to the first magnetic member reliably drives the movement of the electromagnet, thereby unlocking the latch.

[0033] The present invention also includes a protective device 6, comprising a short-circuit protection mechanism 62 and an overload protection mechanism 63. These mechanisms are located on the circuit where the conductive bar 2 resides. Both the short-circuit protection mechanism 62 and the overload protection mechanism 63 are equipped with a push block 64 for driving the connecting rod 53. The push block 64 is equipped with a second magnetic member 61 for driving the trip drive assembly 52. ​​Specifically, the overload protection mechanism 63 includes a bimetallic strip, while the short-circuit protection mechanism 62 includes a static iron core 621, a movable iron core 622, and a core frame 623. The movable iron core 622 is mounted on the core frame 623, and the push block 64 is mounted on one end of the movable iron core 622 and one end of the bimetallic strip. The push block is equipped with a second magnetic member. Both the short-circuit protection mechanism and the overload protection mechanism utilize the second magnetic member to move relative to the first magnetic member, thereby unlocking the latch.

[0034] The fire generator 3 includes: First fire shell 31; The second pyrotechnic shell 32 cooperates with the first pyrotechnic shell 31 to form a powder chamber 33; the powder chamber 33 is provided with a propellant 34 and a firing charge 35 for igniting the propellant 34; specifically, after the first pyrotechnic shell is hit, the firing charge can ignite the propellant, and of course, the firing charge can also ignite the propellant by passing an electric current through the bridge wire.

[0035] The first electrode 36 is inserted into the charge chamber 33 through the first ignition shell 31; The second electrode 37 passes through the first ignition shell 31 and is inserted into the powder chamber 33; The first electrode 36 is connected to the second electrode 37 via a bridge wire 38. The second igniter housing 32 has a first position when installed and a second position in which it separates from the first igniter housing 31 when the firing charge 35 and propellant 34 are activated, thereby severing the conductive bar 2. The present invention provides the following advantages: the provision of the first and second electrodes, connected by the bridge wire, improves the stability of the igniter generator. The igniter generator can be triggered by either a firing pin or a signal wire, achieving integrated mechanical and electrical triggering, enhancing product safety. The present invention also offers advantages such as a simple structure, easy assembly, reliable operation, long service life, and high safety. Of course, in practice, the striking member can also directly strike the igniter generator. In this invention, the firing pin strikes the first igniter housing or the firing pin enters the firing pin hole, triggering the firing charge to ignite. The firing charge rapidly diffuses and ignites the propellant. Ignition of the propellant in a relatively closed environment rapidly releases a large amount of energy, pushing the second igniter housing, which in turn drives the cutter to sever the conductive bar. The first firing shell is provided with a firing pin hole 311 for facilitating the insertion of the firing pin 8. The firing pin hole 311 is located on the outer surface of the first firing shell opposite the charge chamber. More specifically, the firing pin hole is concave, facilitating the firing pin's impact and activating the firing charge, thereby igniting the firing charge. The present invention also includes a cutter 7, which is disposed within the housing 1 and driven by the fire generator 3 to move relative to the housing 1. The cutter 7 has a first position for installation and a second position for cutting the conductive bar 2 to interrupt the circuit. The cutter 7 is provided with an arc-isolating portion 71 for isolating the arc. The conductive bar 2 includes a connection portion 21 and a breakable portion 22. The breakable portion 22 extends toward the connection portion 21 and forms a cutter groove 23. The arc-isolating portion 71 is cylindrical and extends toward the conductive bar 2. The cutter portion 72 is annular. The present invention provides an arc-isolating portion on the cutter. After the cutter cuts, the arc-isolating portion separates the circuit, achieving rapid arc extinguishing and preventing the circuit from being connected through the arc, thereby improving safety. The arc-isolating portion of the cutter is hollow and cylindrical, which can reliably cover the breakable portion. The cutter portion extending from the cylindrical arc-isolating portion is also arranged in a ring shape, and the cross-section of the cutter portion is arranged in an inverted cone shape or an inverted frustum shape, which can reliably separate the conductive bar and divide the conductive bar into three sections, thereby improving product safety.

[0036] Specifically, the conductive bar 2 is recessed from the side opposite the cutter 7 in the direction of cutter 7's movement, forming a cutter slot 23. This cutter slot 23 is arc-shaped. The cutter 7 is inserted into the cutter slot 23 and severs the fragile portion 22, thereby disconnecting the circuit at the conductive bar 2. Specifically, the cutter slot 23 comprises two opposing arc segments, each extending to the edge of the conductive bar. This separates the conductive bar into three sections when the cutter is removed. The fragile portion is neither connected to the power source nor to the electrical load (protective device), remaining completely isolated. Even if a partial arc causes the connection between the wiring portion and the fragile portion to connect, the circuit will not be interrupted, providing enhanced safety. A cutting groove 24 is provided on the other side of the breakable portion 22 opposite to the cutting groove 23. The width of the cutting groove 24 is smaller than that of the cutting groove 23. This structure facilitates the cutting of the conductive bar from the cutting groove and the cutting groove when the cutter is in operation, thereby separating the wiring portion from the breakable portion.

[0037] The present invention also includes an arc-isolating seat 9, which is equipped with multiple arc-isolating plates 91. These plates 91 form arc-isolating slots 92 for the conductive bar 2 to pass through, and cutter-limiting slots 93 for the cutter 7 to limit and guide movement. The arc-isolating plates not only horizontally limit the conductive bar, but also restrict arcing and prevent arc damage to components. The cutter-limiting slots limit the movement of the cutter, creating a simple structure and facilitating rapid linear motion of the cutter to cut the conductive bar.

[0038] The present invention also includes a base 10, which is provided with a support column 101 and a bottom groove 102. The support column 101 is located on the other side of the conductive bar 2 from the cutter 7 and supports the conductive bar 2 when the cutter is in the second position, facilitating the cutter 7 to cut the conductive bar 2. The bottom groove 102 is arranged around the support column 101. The support column supports the conductive bar, preventing it from shifting when the cutter is pressed down to cut, or only partially cutting the conductive bar, allowing the cutter to cut the product quickly and reliably.

[0039] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0041] Technical personnel should note: Although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention. Any modification using the inventive concept will be included in the scope of protection of the patent right of the present invention.

Claims

1. A fast circuit breaker device, comprising a housing (1), characterized in that: Also includes: A conductive bar (2) is inserted into the housing (1); A fire generator (3) is provided in the housing (1) and is used to disconnect the circuit at the conductive bar (2); A striking member (4) is disposed in the housing (1); the striking member (4) has a first position for installation and a second position for driving the fire generator (3) to operate; A tripping structure (5), the tripping structure (5) comprising a tripping frame (51), the tripping frame (51) being provided with a tripping drive assembly (52), a connecting rod (53) and a lock (54); the lock (54) having a first position for locking the striking member (4) and a second position for unlocking the lock by the connecting rod (53) to facilitate free movement of the striking member (4); the tripping drive assembly (52) drives the lock (54) via the connecting rod (53) to move from the first position of the lock (54) to the second position thereof, thereby unlocking the striking member (4).

2. A fast circuit breaker device according to claim 1, characterized in that The trip frame (51) is provided with a carrying buckle (55), and the lock buckle (54) is provided with a hook portion (541). When the lock buckle (54) is in the first position, the hook portion (541) is connected to the striking member (4) and limits the striking member (4). The connecting rod (53) drives the lock buckle (54) to move through the carrying buckle (55), thereby separating the hook portion (541) from the striking member (4) and unlocking the striking member (4).

3. A fast circuit breaker device according to claim 2, characterized in that The carrying buckle (55) is provided with a top block (551), and the top block (551) abuts against the lock buckle (54) and keeps the lock buckle (54) in its first position; the carrying buckle (55) and the lock buckle (54) are both hinged to the trip frame (51), and the connecting rod (53) is provided with an unlocking portion (531), and the unlocking portion (531) enables the lock buckle (54) to rotate relative to the trip frame (51) through the carrying buckle (55) and enables the lock buckle (54) to unlock the striking member (4).

4. A fast circuit breaker device according to claim 1, characterized in that The tripping drive assembly (52) includes an electromagnet (521), a first magnetic member (525), a tripping elastic member (523) and an electromagnetic frame (524). The electromagnet (521) has a first state when installed and a second position in which the connecting rod (53) is driven to move by sliding relative to the electromagnetic frame (524). The first magnetic member (525) is arranged in the electromagnetic frame (524). The magnetic field force formed by the first magnetic member (525) cooperates with the elastic force of the tripping elastic member (523) to keep the electromagnet (521) in its first state.

5. A fast circuit breaker device according to claim 4, characterized in that It also includes a coil (522) wound on the electromagnetic frame (524), wherein the coil (522) is connected to a signal power supply and drives the electromagnet (521) to slide relative to the electromagnetic frame (524) under the control of the signal power supply.

6. A fast circuit breaker device according to claim 4, characterized in that The invention also includes a protective device (6), wherein the protective device (6) is provided with a second magnetic member (61) that cooperates with the first magnetic member (525), and the position of the second magnetic member (61) relative to the first magnetic member (525) changes so as to cause the electromagnet (521) to operate; and the distance between the second magnetic member (61) and the first magnetic member (525) is adjustable.

7. A fast circuit breaker device according to claim 1, characterized in that The invention also includes a protection device (6), wherein the protection device (6) includes a short-circuit protection mechanism (62) and an overload protection mechanism (63), and the short-circuit protection mechanism (62) and the overload protection mechanism (63) are arranged on the circuit where the conductive bar (2) is located; the short-circuit protection mechanism (62) and the overload protection mechanism (63) are both provided with a push block (64) for driving the connecting rod (53) to move, and the push block (64) is provided with a second magnetic member (61) for driving the tripping drive assembly (52) to move.

8. A fast circuit breaker device according to claim 7, characterized in that The overload protection mechanism (63) includes a bimetallic strip, and the short-circuit protection mechanism (62) includes a static iron core (621), a moving iron core (622), and an iron core frame (623). The moving iron core (622) is arranged on the iron core frame (623), and one end of the moving iron core (622) and one end of the bimetallic strip are both provided with the push block (64).

9. A fast circuit breaker device according to claim 1, characterized in that The fire generator (3) comprises: First fire shell (31); A second ignition shell (32), wherein the second ignition shell (32) and the first ignition shell (31) cooperate with each other to form a powder chamber (33); a propellant (34) and a firing powder (35) for igniting the propellant (34) are arranged in the powder chamber (33); A first electrode (36) is inserted into the charge chamber (33) through the first ignition shell (31); A second electrode (37) is inserted into the powder chamber (33) through the first ignition shell (31); The bridge wire (38) is connected to the second electrode (37) via the bridge wire (38); the second ignition shell (32) has a first position when installed and a second position when the firing charge (35) and the propellant (34) are ignited and separated from the first ignition shell (31) for cutting off the conductive row (2).

10. A fast circuit breaker device according to claim 1, characterized in that The invention also includes a cutter (7) which is arranged in the housing (1) and is driven by the fire generator (3) to move relative to the housing (1), the cutter (7) having a first position when installed and a second position for cutting off the conductive bar (2) and disconnecting the circuit; the cutter (7) is provided with an arc-isolating portion (71) for isolating the arc; the conductive bar (2) includes a wiring portion (21) and an easily breakable portion (22), the easily breakable portion (22) extends toward the wiring portion (21) and forms a cutter groove (23), the arc-isolating portion (71) is cylindrical and extends a cutter portion (72) toward the conductive bar (2), and the cutter portion (72) is arranged in a ring shape.

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