Intelligent, safe and efficient firework type circuit breaker

Abstract

The invention provides an intelligent, safe and efficient firework type circuit breaker, which is characterized in that a power-off module, an igniter and a conductive part are arranged in a shell, the conductive part comprises a copper bar mounted on the shell and a conductive sheet connected with the power-off module, and the conductive sheet is in contact with the copper bar to connect a circuit; the power-off module moves under the impact effect when the igniter is detonated, so that the conducting strip is driven to be separated from the copper bar to disconnect the circuit, the circuit is accurately and rapidly cut off, the circuit has the characteristic of being reusable, the use cost is greatly reduced, the resource consumption is reduced, and a double-arc-extinguishing structure composed of the blowing arc-extinguishing module and the arc-extinguishing grid pieces is constructed, so that the service life of the circuit is prolonged. According to the method, a more reliable guarantee scheme is provided for safe and stable operation in the fields of electric power, new energy automobile power batteries and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit protection, and in particular to an intelligent, safe and efficient pyrotechnic type circuit breaker. Background Art

[0002] In the efficient operation of modern electric power and new energy vehicles, circuit breakers play a vital role as key components to ensure line safety and resist overload and short circuit hazards.

[0003] Chinese patent CN202010384326.4 discloses an exemplary embodiment of an active / passive automotive fuse module that may include: an electrically insulating base; a fuse plate, the fuse plate including a bus bar portion, the bus bar portion being arranged on the top surface of the base above a projectile cavity formed in the base, the fuse plate also including a fusible portion, the fusible portion being electrically connected to the bus bar portion and being suitable for disconnecting when the amount of current flowing through the fuse plate exceeds the current rating of the active / passive automotive fuse module, the active / passive automotive fuse module also including a pyrotechnic circuit breaker (PI), the pyrotechnic circuit breaker being arranged on top of the base and including a projectile member located above the bus bar portion, the PI being configured to drive the projectile member through the bus bar portion when the PI is actuated.

[0004] However, traditional circuit breakers have many problems when breaking high current conditions. First, most of the explosive circuit breakers on the existing market have complex structural designs, which leads to increased manufacturing costs and difficulties in installation and subsequent maintenance. More importantly, most of these products are not reusable. Once the fuse action is triggered, the entire device is scrapped, resulting in serious waste of resources, which is contrary to the current industrial trend of energy conservation, emission reduction and sustainable development. Second, the arc breaking process is lengthy and incomplete. The long-term existence of the arc can easily cause electrical faults such as line burning and equipment damage, which seriously threatens the stability of the power system. Therefore, it is urgent to develop a new type of pyrotechnic circuit breaker that can solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of the prior art and provide an intelligent, safe and efficient pyrotechnic breaker, which provides a power-off module, an ignition device and a conductive part in a shell, wherein the conductive part includes a copper busbar mounted on the shell and a conductive sheet connected to the power-off module, the conductive sheet contacts the copper busbar to connect the circuit, and the power-off module moves under the impact of the ignition device when it is detonated, thereby driving the conductive sheet to separate from the copper busbar to disconnect the circuit, thereby achieving accurate and rapid circuit cutting and having reusability, greatly reducing the cost of use, reducing resource consumption, and constructing a double arc extinguishing structure consisting of an air-blowing arc extinguishing module and an arc extinguishing grid, achieving rapid and thorough arc extinguishing, and ensuring the stability of the power system. The present invention is particularly intended to provide a more reliable protection solution for the safe and stable operation of electric power, new energy vehicle power batteries and other fields.

[0006] To achieve the above object, the present invention provides the following technical solutions: An intelligent, safe and efficient pyrotechnic circuit breaker comprises: a shell; and a power-off module, an ignition tool and a conductive part installed in the shell; wherein the conductive part comprises a copper busbar installed on the shell and a conductive sheet connected to the power-off module, the conductive sheet contacts the copper busbar to connect the circuit, and the power-off module moves under the impact of the ignition tool when it is detonated, thereby driving the conductive sheet to separate from the copper busbar to disconnect the circuit.

[0007] Preferably, the shell includes a lower shell and an upper shell, an upper chamber and a lower chamber are connected from top to bottom in the lower shell, the ignition device is installed at the bottom of the lower chamber, the power-off module is installed in the lower chamber and located above the ignition device, and the conductive part is installed in the upper chamber.

[0008] Preferably, the power-off module comprises: a pushing slider, which is sleeved in the lower chamber; a conductive slider, which is sleeved in the pushing slider and has the conductive sheet installed thereon; a main elastic member, which is arranged in contact between the conductive slider and the upper shell; the pushing slider, the conductive slider and the lower chamber are connected by a limiting structure, so that when the ignition device is detonated, the pushing slider first pushes the conductive slider to move upward synchronously so that the conductive sheet is separated from the copper bus, and then the conductive slider rotates alone to complete the locking.

[0009] Preferably, limit keys are distributed on the outer circumferential surface of the conductive slider; a plurality of limit groove portions are distributed circumferentially in the lower chamber, the limit groove portion includes a vertically arranged long groove and a sloped groove which is circumferentially staggered with the long groove and is in the shape of a "√", one end of the sloped groove docking with the long groove is in a high position, and the other end is in a low position and serves as a locking end.

[0010] In the initial state, the limit key is circumferentially limited in the long groove and conflicts with the upper end surface of the pushing slider. When the ignition device is detonated, the impact force drives the pushing slider to move upward, and the conductive slider is pushed upward synchronously by the pushing slider and compresses the main elastic member. After the limit key is separated from the long groove, the conductive slider is guided and rotated on the sloped groove by the downward pressure of the main elastic member until it conflicts and locks.

[0011] Preferably, the power-off module further comprises: an auxiliary elastic member, wherein the auxiliary elastic member is disposed in abutment between the pushing slider and the conductive slider.

[0012] Preferably, guide keys are distributed on the outer circumferential surface of the pushing slider, and the guide keys are limitedly installed in the long groove.

[0013] Preferably, the bottom surface of the limit key is configured as a slope surface matching the slope groove, and the upper end surface of the push slider is configured as a serrated shape distributed along the circumferential direction to form a plurality of slope surfaces for matching and interfering with the limit key.

[0014] Preferably, the lower shell and the upper shell are detachably connected, and the two together form an installation space for installing the power-off module, the ignition device and the conductive part.

[0015] Preferably, it further comprises: an air blowing arc extinguishing module, wherein the insulating gas generated when the ignition tool is ignited is guided by the air blowing arc extinguishing module and sprayed to the contact point between the conductive sheet and the copper busbar to perform air blowing arc extinguishing.

[0016] Preferably, the air blowing arc extinguishing module includes: an air inlet, which is provided on the lower shell body in the lower chamber space between the power-off module and the ignition device; an air outlet, which is provided on the side wall of the lower shell body at the contact position; a pipe, which connects the air inlet and the air outlet; and an air vent, which is provided on the lower shell body in the upper chamber space.

[0017] Preferably, it further comprises: an arc-extinguishing grid, wherein the arc-extinguishing grid is installed in the housing and is located near the contact point between the conductive sheet and the copper busbar.

[0018] The beneficial effects of the present invention are: (1) The present invention arranges a power-off module, an ignition tool and a conductive part in a shell, wherein the conductive part includes a copper busbar mounted on the shell and a conductive sheet connected to the power-off module, the conductive sheet contacts the copper busbar to connect the circuit, and the power-off module moves under the impact of the ignition tool when it is detonated, thereby driving the conductive sheet to separate from the copper busbar to disconnect the circuit, thereby achieving accurate and rapid circuit disconnection and having the characteristic of being reusable, greatly reducing the use cost and reducing resource consumption; (2) The reusable feature of the present invention is based on an ingenious structural design. After the circuit breaker is triggered, it is only necessary to replace the ignition fuel of the ignition device to resume operation. By setting a detachable connection between the lower shell and the upper shell, it is convenient to replace the built-in ignition fuel of the ignition device, thereby achieving reuse. In addition, thanks to the stable slider linkage mechanism and shell assembly, during the fuel replacement operation, each component can maintain the original accuracy and matching relationship, and there is no need for complex adjustment of the overall structure. (3) The present invention arranges arc extinguishing grids on the upper inner side of the lower shell body. The arc extinguishing grids are selected and scientifically arranged according to advanced arc extinguishing principles, have strong arc attraction and segmentation capabilities, and achieve effective arc extinguishing. An air blowing arc extinguishing module is provided to perform air blowing arc extinguishing, thereby constructing a double arc extinguishing guarantee. The key arc extinguishing components such as the arc extinguishing grids used have a long service life and can still maintain high efficiency after multiple arc extinguishing tests, thereby greatly reducing maintenance costs and resource consumption.

[0019] To sum up, the reusable rotary contact-breaking high-efficiency pyrotechnic circuit breaker of the present invention has comprehensively broken through the limitations of traditional fuses from structural design innovation to working principle optimization and then to the realization of reusable characteristics, and has opened up a new development path for equipment protection in the fields of electricity, new energy vehicle power batteries, etc. It has high practical value and broad market prospects, and is expected to become a core product in the field of power protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front cross-sectional view of the structure of the present invention in an initial state; Figure 2 It is a partial structural exploded diagram of the present invention; Figure 3 It is a front cross-sectional view of the structure of the present invention in a power-off state; Figure 4 for Figure 3 The cross-sectional view along the AA direction; Figure 5 for Figure 3 Cross-sectional view along direction BB. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] Embodiment 1 like Figure 1-2 As shown, an intelligent, safe and efficient pyrotechnic circuit breaker comprises: a housing 1; and a power-off module 20, an igniter 3 and a conductive part 4 installed in the housing 1; wherein the conductive part 4 comprises a copper bus 41 installed on the housing 1 and a conductive sheet 42 connected to the power-off module 20, the conductive sheet 42 contacts the copper bus 41 to connect the circuit, and the power-off module 20 moves under the impact of the igniter 3 when it is detonated, thereby driving the conductive sheet 42 to separate from the copper bus 41 to disconnect the circuit, as shown in FIG. Figure 3 shown.

[0024] In this embodiment, a power-off module 20, an ignition tool 3 and a conductive part 4 are arranged in the shell 1. The conductive part 4 includes a copper bus 41 installed on the shell and a conductive sheet 42 connected to the power-off module 20. The conductive sheet 42 contacts the copper bus 41 to connect the circuit. The power-off module 20 moves under the impact when the ignition tool 3 is detonated, thereby driving the conductive sheet 42 to separate from the copper bus 41 to disconnect the circuit, thereby achieving accurate and rapid circuit cutting and having the characteristic of reusability, greatly reducing the cost of use and reducing resource consumption.

[0025] As a preference, Figure 1 As shown, the shell 1 includes a lower shell 11 and an upper shell 12, and an upper chamber 13 and a lower chamber 14 are connected from top to bottom in the lower shell 11, the ignition tool 3 is installed at the bottom of the lower chamber 14, the power-off module 20 is installed in the lower chamber 14 and is located above the ignition tool 3, and the conductive part 4 is installed in the upper chamber 13.

[0026] In this embodiment, the igniter 3 is precisely installed in the lower chamber 14, and the chamber structure is optimized to not only stably support the igniter 3 but also efficiently guide the directional release of energy during detonation.

[0027] Preferably, the power-off module 20 includes: a pushing slider 21, which is sleeved in the lower chamber 14; a conductive slider 22, which is sleeved in the pushing slider 21 and has the conductive sheet 42 installed thereon; a main elastic member 23, which is abutted between the conductive slider 22 and the upper shell 12; the pushing slider 21, the conductive slider 22 and the lower chamber 14 are connected by a limiting structure, so that when the ignition device 3 is detonated, the pushing slider 21 first pushes the conductive slider 22 to move upward synchronously so that the conductive sheet 42 is separated from the copper bus 41, and then the conductive slider 22 rotates alone to complete the locking.

[0028] As a preference, Figure 2 As shown, limit keys 221 are distributed on the outer circumferential surface of the conductive slider 22; a plurality of limit grooves are distributed circumferentially in the lower chamber 14, and the limit grooves include a vertically arranged long groove 141 and a sloped groove 142 which is circumferentially staggered with the long groove 141 and is in the shape of a "√", and one end of the sloped groove 142 which is connected to the long groove 141 is in a high position, and the other end is in a low position and serves as a locking end.

[0029] Combination Figure 2-3 As shown, in the initial state, the limit key 221 is circumferentially limited in the long groove 141 and conflicts with the upper end surface 210 of the push slider 21. When the ignition device 3 is detonated, the impact force drives the push slider 21 to move upward, and the conductive slider 22 is pushed by the push slider 21 to move upward synchronously and press the main elastic member 23. After the limit key 221 is separated from the long groove 141, the conductive slider 22 is subjected to the downward pressure of the main elastic member 23 and is guided and rotated on the slope groove 142 until it conflicts and locks, as shown in FIG. Figure 5 shown.

[0030] It is worth noting that the elastic coefficient of the main elastic member 23 is precisely adjusted to provide suitable support for internal components, buffer the impact of fuse action, and protect the stable operation of the internal structure.

[0031] As a preference, Figure 3 As shown, the power-off module 20 further includes: an auxiliary elastic member 24 , and the auxiliary elastic member 24 is disposed between the pushing slider 21 and the conductive slider 22 in a resistive manner.

[0032] In this embodiment, the auxiliary elastic member 24 continuously applies a stable pressure to drive the conductive slider 22 to quickly reset.

[0033] As a preference, Figure 2 As shown, guide keys 211 are distributed on the outer circumference of the pushing slider 21 , and the guide keys 211 are limitedly installed in the long groove 141 .

[0034] In this embodiment, a long groove 141 is designed at the lower middle portion of the inner side of the lower shell 11, and the pushing slider 21 is located at the lower middle portion of the inner side of the lower shell 11. The guide key 211 on its outer surface fits tightly with the long groove 141. The precise contour and size of the long groove 141 provide a precise motion track for the pushing slider 21, ensuring that the slider moves smoothly along the predetermined track during high-speed operation without deviating from the track.

[0035] Preferably, the bottom surface of the limit key 221 is set as a slope surface matching the slope groove 142 , and the upper end surface 210 of the push slider 21 is set to be serrated distributed along the circumferential direction to form a plurality of slope surfaces for matching and interfering with the limit key 221 .

[0036] Embodiment 2 The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are: Preferably, the lower shell 11 and the upper shell 12 are detachably connected, and the two together form an installation space for installing the power-off module 20 , the ignition device 3 and the conductive part 4 .

[0037] In this embodiment, the reusable feature is based on an ingenious structural design. After the circuit breaker is triggered, it is only necessary to replace the ignition fuel of the ignition device 3 to resume operation. By setting the lower shell 11 and the upper shell 12 to be detachably connected, it is convenient to replace the built-in ignition fuel of the ignition device 3, thereby achieving reuse.

[0038] It is worth mentioning that, thanks to the stable slider linkage mechanism and shell assembly, during the fuel replacement operation, each component can maintain the original accuracy and matching relationship, without the need for complex adjustments to the overall structure.

[0039] As a supplementary explanation, when the igniter fuel is replaced, the conductive slider 22 is manually reversed and reset.

[0040] Embodiment 3 The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are: As a preference, Figure 2As shown, it also includes: an air blowing arc extinguishing module 5, and the insulating gas generated when the ignition device 3 is ignited is guided by the air blowing arc extinguishing module 5 and sprayed to the contact 40 between the conductive sheet 42 and the copper busbar 41 to perform air blowing arc extinguishing.

[0041] As a preference, Figure 4-5 As shown, the air blowing arc extinguishing module 5 includes: an air inlet 51, which is opened on the lower shell 11 in the space of the lower chamber 14 between the power-off module 20 and the ignition device 3; an air outlet 52, which is opened on the side wall of the lower shell 11 at the position of the contact 40; a pipe 53, which connects the air inlet 51 and the air outlet 52; and an air vent 54, which is opened on the lower shell 11 in the space of the upper chamber 13.

[0042] In the initial state, the power-off module 20 blocks the air inlet 51. When the ignition device 3 is detonated, the impact force drives the power-off module 20 to move upward, the air inlet 51 opens, and part of the gas generated by the explosion enters the upper chamber 13 through the pipe 53 to form a high-speed airflow, blowing air towards the contact 40 to extinguish the arc.

[0043] As a preference, Figure 1 As shown, it also includes: an arc-extinguishing grid 6, which is installed in the housing 1 and is located near the contact point 40 between the conductive sheet 42 and the copper bus 41.

[0044] In this embodiment, due to the moment when the conductive sheet 42 and the copper busbar 41 are separated, an arc dancing upward is generated at the breakpoint due to the sudden change of current. Therefore, an arc extinguishing grid 6 is arranged on the upper inner side of the lower shell 11. The arc extinguishing grid 6 is selected and scientifically arranged according to the advanced arc extinguishing principle, and has a strong arc attraction and segmentation ability. With its own material properties and physical structure, it stimulates a strong electric field force to attract the arc, and uses fine intervals to divide the arc into many short arcs. According to the characteristics of AC arc, when the AC current passes through zero, the short arcs are extinguished synchronously due to insufficient energy; At the same time, when the slider 21 is pushed upward by the impact of the explosion, the air inlet 51 is opened, and part of the insulating gas produced by the explosion is driven by the pressure difference and is ejected at high speed from the air outlet 52 through the pipe 53 into the upper chamber 13 of the lower shell 11, blowing air to the contact 40 to extinguish the arc, constructing a double arc extinguishing protection to prevent the possibility of the arc reigniting. The exhaust gas after the arc extinguishing is discharged in an orderly manner through the carefully designed vent 54, ensuring a good environment inside the shell without affecting the performance of subsequent devices.

[0045] In this embodiment, key arc-extinguishing components such as the arc-extinguishing grid 6 have a long service life and can still maintain high efficiency performance after multiple arc-extinguishing tests, thereby greatly reducing maintenance costs and resource consumption.

[0046] It is worth noting that in this application, the upper shell 12 and the lower shell 11 are injection molded with high-precision molds. With exquisite craftsmanship, the shell size accuracy is strictly controlled within a very small tolerance range to meet the precision assembly requirements of internal components. For the ignition device 3, a high-stability, high-energy-density detonation fuel is carefully selected and encapsulated in a special high-pressure resistant container to ensure the safety of the entire process. The arc-extinguishing grid 6 is made of a new alloy material that is resistant to high temperatures, highly conductive, and has strong magnetic attraction properties. After precision stamping and strict assembly processes, it is placed on the upper inner side of the lower shell 11. The conductive slider 22 and the push slider 21 of the slider linkage mechanism are injection molded with high-strength, low-friction coefficient engineering plastics, and then finely machined and polished to ensure that the key parts such as the guide key 211, the upper end face 210 of the push slider 21, and the limit key 221 are accurate in size. During the assembly process, we strictly follow the design sequence and install each component into the housing one by one in an orderly manner. Each step is supplemented by strict quality inspection to ensure that the finished fuse has excellent performance, stability and reliability, and can accurately and efficiently play a circuit protection role under complex power conditions.

[0047] Working process: In the initial state, the limit key 221 of the conductive slider 22 is circumferentially limited in the long groove 141 of the lower shell 11 and conflicts with the upper end face 210 of the push slider 21. When a circuit failure occurs, the current overload or short circuit triggers the protection mechanism, the software control system signal triggers the ignition device 3 to detonate. In an instant, the air pressure in the lower chamber 14 rises sharply, forming a strong thrust acting on the push slider 21, and the push slider 21 overcomes the reverse pulling force of the auxiliary elastic member 24 and moves up quickly. At the same time, with the help of the rigid connection between the upper end face 210 of the push slider 21 and the limit key 221 of the conductive slider 22 , the push slider 21 overcomes the spring resistance of the main elastic member 23, and drives the conductive slider 22 to move up synchronously until the limit key 221 of the conductive slider 22 crosses the long slot 141 of the lower shell 11, so that the conductive sheet 42 is separated from the copper bar 41. After the explosion energy is released, the auxiliary elastic member 24 rebounds by elasticity, causing the conductive slider 22 and the push slider 21 to separate. The main elastic member 23 also plays a reset role, driving the conductive slider 22 to move downward, and its limit key 221 is guided and rotated downward on the slope groove 142, and finally accurately snaps into the locking end of the slope groove 142 for resistance locking; In addition, when the slider 21 is pushed upward, the air inlet 51 is opened, and part of the gas generated by the explosion enters the upper chamber 13 through the pipe 53 to form a high-speed airflow, blowing air to the contact point 40 between the conductive sheet 42 and the copper busbar 41 to extinguish the arc, and the arc extinguishing grid 6 is also extinguished at the same time.

[0048] When the pyrotechnic circuit breaker of the present invention needs to be reused, the specific operation steps are as follows: The first step is to confirm that the circuit breaker has completed the protection action and is in the power-off state to ensure safe operation. The operator must wear appropriate protective equipment, such as insulating gloves, goggles, etc., to prevent accidental electric shock or other injuries.

[0049] The second step is to carefully open the upper housing 12 of the circuit breaker, and be careful not to cause additional damage to the internal components during the opening process. Use professional tools and follow the predetermined disassembly process to gradually separate the connectors associated with the ignition device 3, but the original position and connection method of each connector must be recorded for accurate subsequent reset.

[0050] The third step is to take out the triggered ignition device 3. The replacement process should follow strict safety regulations and use special tools to avoid abnormalities during subsequent use.

[0051] The fourth step is to reinstall the replaced ignition tool 3 into the corresponding chamber of the lower shell 11 according to the previously recorded connection position and connection method, and use professional tools to tighten it to ensure that the ignition tool 3 is firmly installed and cooperates accurately with surrounding parts.

[0052] Step 5: After the replacement and installation of the ignition device 3, carefully check the status of the internal components of the fuse, including the movement flexibility of the slider linkage mechanism, the integrity of the arc extinguishing grid 6, etc. If any component is found to be abnormal, such as the slider stuck, the grid deformation, etc., it should be repaired or adjusted in time to ensure that the entire fuse is restored to the best working condition.

[0053] Sixth, after confirming that everything is correct, slowly close the upper housing 12 of the breaker and check again whether the connections of the components are tight and whether the housing seal is good. After the final test is qualified, the pyrotechnic breaker can be put back into use and continue to play its efficient circuit protection function.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent, safe and efficient pyrotechnic breaker, characterized in that: include: Housing (1); as well as A power-off module (20), an igniter (3), and a conductive part (4) installed in the housing (1); The conductive part (4) comprises a copper busbar (41) mounted on the housing (1) and a conductive sheet (42) connected to the power-off module (20); the conductive sheet (42) is in contact with the copper busbar (41) to connect the circuit; the power-off module (20) moves under the impact of the ignition device (3) when it is detonated, thereby driving the conductive sheet (42) to separate from the copper busbar (41) to disconnect the circuit.

2. An intelligent, safe and efficient pyrotechnic circuit breaker according to claim 1, characterized in that: The shell (1) comprises a lower shell (11) and an upper shell (12); an upper chamber (13) and a lower chamber (14) are connected from top to bottom in the lower shell (11); the ignition device (3) is installed at the bottom of the lower chamber (14); the power-off module (20) is installed in the lower chamber (14) and is located above the ignition device (3); and the conductive part (4) is installed in the upper chamber (13).

3. An intelligent, safe and efficient pyrotechnic breaker according to claim 2, characterized in that: The power-off module (20) comprises: A pushing slider (21), wherein the pushing slider (21) is sleeved in the lower chamber (14); A conductive slider (22), the conductive slider (22) being sleeved in the pushing slider (21) and having the conductive sheet (42) mounted thereon; A main elastic member (23), the main elastic member (23) being disposed between the conductive slider (22) and the upper housing (12) in abutting manner; The pushing slider (21), the conductive slider (22) and the lower chamber (14) are connected via a limiting structure, so that when the ignition device (3) is detonated, the pushing slider (21) first pushes the conductive slider (22) to move upward synchronously so that the conductive sheet (42) is separated from the copper bar (41), and then the conductive slider (22) rotates alone to complete locking.

4. The intelligent, safe and efficient pyrotechnic breaker according to claim 3, characterized in that: Limiting keys (221) are distributed on the outer circumferential surface of the conductive sliding block (22); a plurality of limiting grooves are distributed circumferentially in the lower chamber (14), the limiting grooves comprising a vertically arranged long groove (141) and a sloped groove (142) circumferentially staggered with the long groove (141) and in the shape of a "√", one end of the sloped groove (142) that butts against the long groove (141) is in a high position, and the other end is in a low position and serves as a locking end; In an initial state, the limit key (221) is circumferentially limited within the long groove (141) and contacts the upper end surface (210) of the push slider (21). When the ignition device (3) is detonated, the impact force drives the push slider (21) to move upward, and the conductive slider (22) is pushed upward by the push slider (21) and presses the main elastic member (23). After the limit key (221) is separated from the long groove (141), the conductive slider (22) is guided and rotated on the slope groove (142) by the downward pressure of the main elastic member (23) until it contacts and locks.

5. The intelligent, safe and efficient pyrotechnic breaker according to claim 3, characterized in that: The power-off module (20) further comprises: A secondary elastic member (24), the secondary elastic member (24) being disposed in abutment between the pushing slider (21) and the conductive slider (22).

6. The intelligent, safe and efficient pyrotechnic circuit breaker according to claim 4, characterized in that: The bottom surface of the limit key (221) is configured as a slope surface that matches the slope groove (142), and the upper end surface (210) of the push slider (21) is configured as a sawtooth shape distributed along the circumferential direction to form a plurality of slope surfaces that are used to match and interfere with the limit key (221).

7. The intelligent, safe and efficient pyrotechnic breaker according to claim 2, characterized in that: The lower shell (11) and the upper shell (12) are detachably connected, and the two together enclose an installation space for installing the power-off module (20), the ignition device (3), and the conductive part (4).

8. The intelligent, safe and efficient pyrotechnic circuit breaker according to claim 2, characterized in that: Also includes: An air blowing arc extinguishing module (5), wherein the insulating gas generated when the ignition device (3) is ignited is guided by the air blowing arc extinguishing module (5) and sprayed to the contact point (40) between the conductive sheet (42) and the copper busbar (41) to perform air blowing arc extinguishing.

9. The intelligent, safe and efficient pyrotechnic circuit breaker according to claim 8, characterized in that: The air blowing arc extinguishing module (5) comprises: An air inlet (51), the air inlet (51) being provided on the lower housing (11) in a space of the lower chamber (14) between the power-off module (20) and the ignition device (3); An air outlet (52), the air outlet (52) being provided on a side wall of the lower housing (11) at the position of the contact point (40); a pipeline (53), the pipeline (53) connecting the air inlet (51) and the air outlet (52); and An air vent (54) is provided on the lower shell (11) and is located in the space of the upper chamber (13).

10. The intelligent, safe and efficient pyrotechnic circuit breaker according to claim 1, characterized in that: Also includes: An arc-extinguishing grid (6), the arc-extinguishing grid (6) being installed in the housing (1) and located near a contact point (40) between the conductive sheet (42) and the copper busbar (41).

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