Intelligent circuit breaker with functional safety double arc extinguishing channels and manufacturing method

Abstract

The present invention relates to the technical field of power system protection and control, and discloses an intelligent circuit breaker with functional safety double arc extinguishing channels and a manufacturing method. The intelligent circuit breaker comprises a protection mechanism and four cables. A circuit making and breaking mechanism for power transmission is arranged inside the protection mechanism. An electromagnetic transmission mechanism for driving the circuit making and breaking mechanism to complete circuit making and breaking is arranged at the upper part of the protection mechanism. Arc extinguishing mechanisms for arc extinguishing are arranged at both ends of the protection mechanism. A positioning mechanism for installing and positioning the four arc extinguishing mechanisms is arranged inside the protection mechanism. The circuit making and breaking mechanism is driven by electromagnetic force to realize reliable circuit making and breaking. At the same time, arc extinguishing mechanisms are arranged on both sides of both ends of the protection mechanism for quickly and effectively suppressing and extinguishing arcs generated during the circuit making and breaking process. The positioning mechanism ensures the precise positioning and stability of the four arc extinguishing mechanisms during the installation process, thereby ensuring the safe and stable operation of the entire circuit breaker in the power system.

Description

Technical Field

[0001] The present invention relates to the technical field of power system protection and control, and in particular to an intelligent circuit breaker with functional safety double arc extinguishing channels and a manufacturing method thereof. Background Art

[0002] A circuit breaker is an automatic electrical switch used to protect circuits from damage caused by overloads and short circuits. When an abnormal current is detected, the circuit breaker automatically cuts off the circuit to prevent electrical fires and equipment damage. Usage scenarios include home power distribution systems, industrial equipment, and automotive electrical systems. The method of use usually involves installing the circuit breaker in the circuit, and then selecting the appropriate rated current and breaking characteristics based on the load and circuit requirements to ensure that the circuit can be reliably disconnected under abnormal circumstances.

[0003] Traditional high-voltage circuit breakers in the prior art have significant limitations in design. Their structural basis leads to poor quality stability and even relay adhesion failure, making it difficult to meet the high standards of equipment reliability in new energy systems. These circuit breakers are limited to performing basic protection functions and lack the ability to cope with the diversified and dynamic needs of modern power systems. Especially in scenarios with distinct energy conversion and storage characteristics, the requirements for the intelligence and flexibility of circuit breakers are more urgent. In new energy systems, power fluctuations and complex faults occur frequently. Circuit breakers on the existing market often expose defects such as slow response and insufficient fault identification accuracy, which directly affect the effectiveness and timeliness of system protection, and thus threaten the stable operation and safety performance of new energy systems. To this end, we propose an intelligent circuit breaker with functional safety dual arc extinguishing channels and a manufacturing method. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent circuit breaker with functional safety double arc extinguishing channels and a manufacturing method to solve the significant limitations of traditional high-voltage circuit breakers in design. The structural basis leads to poor quality stability and even relay adhesion failure, which makes it difficult to meet the high standards of equipment reliability in new energy systems. These circuit breakers are limited to performing basic protection functions and lack the ability to cope with the diversified and dynamic needs of modern power systems. Especially in scenarios with distinct energy conversion and storage characteristics, the requirements for the intelligence and flexibility of circuit breakers are more urgent. In new energy systems, power fluctuations and complex faults occur frequently. The circuit breakers currently on the market often expose defects such as slow response and insufficient fault identification accuracy, which directly affect the effectiveness and timeliness of system protection, and thus threaten the stable operation and safety performance of new energy systems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent circuit breaker with functional safety dual arc extinguishing channels, comprising a protection mechanism and four cables, wherein a circuit making and breaking mechanism for power transmission is arranged inside the protection mechanism, an electromagnetic transmission mechanism for driving the circuit making and breaking mechanism to complete circuit making and breaking is arranged at the upper part of the protection mechanism, arc extinguishing mechanisms for arc extinguishing are arranged at both ends of the protection mechanism, and a positioning mechanism for installing and positioning four arc extinguishing mechanisms is arranged inside the protection mechanism.

[0006] Preferably, the protection mechanism includes a lower protective cover, an upper protective cover is fixedly connected to the upper end of the lower protective cover, a driving circuit board is assembled on one side of the lower protective cover and the upper protective cover, an isolation cover for protecting the driving circuit board is fixedly connected to the upper protective cover and the lower protective cover near the driving circuit board, support plates are fixedly connected to both sides of the center of the upper inner wall of the upper protective cover, a sliding tube is fixedly sleeved at the upper center of the upper protective cover, and a plurality of ventilation holes are arranged and penetrated on both sides of the upper protective cover.

[0007] Preferably, the positioning mechanism includes a center block, which is fixedly connected to the lower inner wall of the lower protective cover, and positioning frames are fixedly connected on both sides of the center of one end of the two positioning frames close to each other are fixedly connected to first conductive sheets on both sides, and one end of the four first conductive sheets is fixedly connected to a conductive plate at the top, and the upper ends of the four conductive plates are fixedly connected to a first insulating plate, and the inside of the four first insulating plates is fixedly sleeved with an insulating tube on one side.

[0008] Preferably, one end of the four cables is fixedly connected to the other end of the four first conductive sheets respectively.

[0009] Preferably, the electromagnetic transmission mechanism includes a mounting sleeve, which is fixedly connected between two support plates, a mounting plate is fixedly connected to the lower end of the mounting sleeve, a positioning sleeve is arranged between the mounting plate and the mounting sleeve, a coil is arranged on the fixed sleeve outside the positioning sleeve, the coil is electrically connected to the driving circuit board, a pull rod is arranged at the upper center of the mounting sleeve and the sliding sleeve at the center of the mounting plate, the sliding sleeve at the upper outer side of the pull rod is arranged inside the sliding tube, a magnetic block is arranged on the fixed sleeve outside the pull rod, and the magnetic block sliding sleeve is arranged inside the positioning sleeve.

[0010] Preferably, the circuit breaking mechanism includes two insulating limit tubes and two U-shaped support frames, the two insulating limit tubes are respectively fixedly connected to the center of the upper end of the center block on both sides, the two U-shaped support frames are respectively fixedly connected to the center of the lower end of the mounting plate on both sides, the two U-shaped support frames are slidably sleeved with guide rods at the lower center of the two U-shaped support frames, the upper ends of the two guide rods are fixedly connected to limit buckles, the lower ends of the two guide rods are fixedly connected to docking buckles, the centers of the lower ends of the two docking buckles are fixedly connected to docking rods, and the lower ends of the two docking rods are rotatably connected to the second insulating plate, and the upper ends of the two insulating plates are fixedly connected to the second insulating plate. A second conductive sheet is connected, and conductive columns are fixedly connected to both sides of the lower ends of the two second conductive sheets. The four conductive columns respectively penetrate the lower ends of the two second insulating plates, and the four conductive columns are respectively slidably sleeved inside the four insulating tubes. The four conductive columns are detachably connected to the four insulating tubes. The two second conductive sheets are respectively rotatably sleeved on the outsides of the two docking rods. An insulating linkage strip is provided at the center of the upper ends of the two second conductive sheets. The insulating linkage strip is fixedly sleeved on the upper outsides of the two docking rods, and the center of the upper end of the insulating linkage strip is fixedly connected to the pull rod.

[0011] Preferably, the lower ends of the two second insulating plates are fixedly connected to insulating rods, the outer ends of the two insulating rods are fixedly connected to guide blocks at the lower parts, the two insulating limit tubes are provided with guide grooves on both sides, the four guide blocks are respectively slidably mounted inside the four guide grooves, and the outer sides of the two guide rods are respectively provided with reset springs, the lower ends of the two reset springs are respectively in contact with the top ends of the two docking buckles, and the upper ends of the two reset springs are respectively in contact with the bottom ends of the two U-shaped support frames.

[0012] Preferably, the arc extinguishing mechanism includes an insulating arc extinguishing chamber, which is fixedly connected to one side of the positioning frame, and arc extinguishing baffles and arc extinguishing filters are arranged at one end of the insulating arc extinguishing chamber near the ventilation hole, and airflow guide plates are fixedly connected at the upper and lower ends of one side of the center of the insulating arc extinguishing chamber, and a plurality of spoilers are arranged and fixedly connected to the upper end of the airflow guide plate and the upper inner wall of the insulating arc extinguishing chamber at the upper end, and a plurality of spoilers are arranged and fixedly connected to the lower end of the airflow guide plate and the lower inner wall of the insulating arc extinguishing chamber at the lower end, and baffles are fixedly connected at both sides of the insulating arc extinguishing chamber, and a plurality of arc extinguishing grids are fixedly connected between the two baffles.

[0013] A method for manufacturing an intelligent circuit breaker with functional safety double arc extinguishing channels comprises the following steps:

[0014] S1. First, the lower protective cover, the upper protective cover, the isolation cover, the support sheet, the sliding tube, the center block, the positioning frame, the mounting sleeve, the mounting plate, the positioning sleeve, the pull rod, the insulating limit tube, the U-shaped support frame, the guide rod and the airflow guide plate are manufactured by a precision plastic equipment injection molding process;

[0015] S2, then the first conductive sheet, conductive plate, second conductive sheet, conductive column and arc extinguishing grid key conductive and safety components are precisely produced by professional metal stamping and bending equipment;

[0016] S3, then the first insulating plate, insulating tube, insulating limit tube, second insulating plate, insulating linkage strip, insulating rod and insulating arc extinguishing chamber key insulating components are made of high temperature baked ceramic materials;

[0017] S4. Finally, the structures in step S1, step S2 and step S3 are assembled and spliced ​​to obtain an intelligent circuit breaker with functional safety dual arc extinguishing channels.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides an electromagnetic transmission mechanism and a circuit-breaking mechanism. When in use, the circuit-breaking mechanism is integrated inside the protection mechanism and is responsible for the transmission and connection and disconnection of electric power. The electromagnetic transmission mechanism is located on the upper part of the protection mechanism and drives the circuit-breaking mechanism through electromagnetic force to realize reliable connection and disconnection of the circuit. At the same time, arc extinguishing mechanisms are provided on both sides of both ends of the protection mechanism for quickly and effectively suppressing and extinguishing arcs generated during the circuit connection and disconnection process. The positioning mechanism ensures the precise positioning and stability of the four arc extinguishing mechanisms during the installation process, thereby ensuring the safe and stable operation of the entire circuit breaker in the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an intelligent circuit breaker with functional safety double arc extinguishing channels;

[0021] Figure 2 A schematic diagram of the three-dimensional structure of an intelligent circuit breaker with functional safety dual arc extinguishing channels from another perspective;

[0022] Figure 3 It is a schematic diagram of the three-dimensional split structure of an intelligent circuit breaker with functional safety dual arc extinguishing channels;

[0023] Figure 4 A schematic diagram of a three-dimensional split structure of an intelligent circuit breaker with functional safety dual arc extinguishing channels from another perspective;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the support sheet of the present invention;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the electromagnetic transmission mechanism of the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the positioning frame of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional split structure of the electromagnetic transmission mechanism of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional split structure of the circuit switching mechanism of the present invention;

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the insulating limit tube of the present invention;

[0030] Fig.11 It is a schematic diagram of the three-dimensional split structure of the arc extinguishing mechanism of the present invention;

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the insulating arc-extinguishing chamber of the present invention;

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the arc extinguishing grid of the present invention;

[0033] Fig.14 It is a side sectional view of an intelligent circuit breaker with functional safety dual arc extinguishing channels.

[0034] In the figure: 1. protection mechanism; 101. lower protection cover; 102. upper protection cover; 103. drive circuit board; 104. isolation cover; 105. support sheet; 106. slide tube; 107. ventilation hole; 2. positioning mechanism; 201. center block; 202. positioning frame; 203. first conductive sheet; 204. conductive plate; 205. first insulating plate; 206. insulating tube; 3. electromagnetic transmission mechanism; 301. mounting sleeve; 302. mounting plate; 303. positioning sleeve; 304. coil; 305. pull rod; 306. magnetic block; 4. circuit on-off mechanism; 401. insulating Limiting tube; 402, U-shaped support frame; 403, guide rod; 404, limiting buckle; 405, docking buckle; 406, docking rod; 407, second insulating plate; 408, second conductive sheet; 409, conductive column; 4010, insulating linkage strip; 4011, insulating rod; 4012, guide block; 4013, guide groove; 4014, reset spring; 5, arc extinguishing mechanism; 501, insulating arc extinguishing chamber; 502, arc extinguishing baffle; 503, arc extinguishing filter; 504, airflow guide plate; 505, spoiler; 506, baffle; 507, arc extinguishing grid; 6, cable. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-Figure 4 The present invention provides a technical solution: an intelligent circuit breaker with functional safety double arc extinguishing channels, including a protection mechanism 1 and four cables 6, a circuit switching mechanism 4 for power transmission is arranged inside the protection mechanism 1, an electromagnetic transmission mechanism 3 for driving the circuit switching mechanism 4 to complete circuit switching is arranged at the upper part of the protection mechanism 1, arc extinguishing mechanisms 5 for arc extinguishing are arranged at both ends of the protection mechanism 1, and a positioning mechanism 2 for installing and positioning the four arc extinguishing mechanisms 5 is arranged inside the protection mechanism 1.

[0037] Furthermore, a circuit switching mechanism 4 is integrated inside the protection mechanism 1, which is responsible for the transmission and switching of electricity. The electromagnetic transmission mechanism 3 is located on the upper part of the protection mechanism 1, and drives the circuit switching mechanism 4 through electromagnetic force to achieve reliable switching of the circuit. At the same time, arc extinguishing mechanisms 5 are provided on both sides of both ends of the protection mechanism 1, which are used to quickly and effectively suppress and extinguish the arc generated during the circuit switching process. The positioning mechanism 2 ensures the precise positioning and stability of the four arc extinguishing mechanisms 5 during the installation process, thereby ensuring the safe and stable operation of the entire circuit breaker in the power system.

[0038] In the preferred technical solution of this embodiment, please refer to Figure 3-Figure 5 The protection mechanism 1 includes a lower protection cover 101, an upper protection cover 102 is fixedly connected to the upper end of the lower protection cover 101, a driving circuit board 103 is assembled on one side of the lower protection cover 101 and the upper protection cover 102, an isolation cover 104 for protecting the driving circuit board 103 is fixedly connected to the upper protection cover 102 and the lower protection cover 101 near the driving circuit board 103, support sheets 105 are fixedly connected to both sides of the center of the inner wall of the upper protection cover 102, a sliding pipe 106 is fixedly sleeved at the upper center of the upper protection cover 102, and a plurality of ventilation holes 107 are arranged and penetrated on both sides of the upper protection cover 102.

[0039] Furthermore, the protection mechanism 1 is the core protection frame of the entire circuit breaker, which is made of the lower protection cover 101 and the upper protection cover 102 through the injection molding process to ensure the firmness and stability of the structure. The driving circuit board 103 is responsible for controlling the electrical operation of the entire circuit breaker, and the isolation cover 104 effectively protects the driving circuit board 103. The two support plates 105 are fixed inside the upper protection cover 102 to provide a stable installation foundation for the electromagnetic transmission mechanism 3. The design of the sliding tube 106 enables the pull rod 305 to slide smoothly while ensuring the stability of the structure. The ventilation hole 107 is used for heat dissipation and gas exchange to ensure that the internal temperature of the circuit breaker is appropriate.

[0040] In the preferred technical solution of this embodiment, please refer to Figure 7The positioning mechanism 2 includes a center block 201, which is fixedly connected to the lower inner wall of the lower protective cover 101. Positioning frames 202 are fixedly connected on both sides of the center of one end of the two positioning frames 202 close to each other are fixedly connected to the first conductive sheets 203 on both sides. One end of the four first conductive sheets 203 is fixedly connected to a conductive plate 204 at the upper part. The upper ends of the four conductive plates 204 are fixedly connected to a first insulating plate 205. The four first insulating plates 205 are fixedly sleeved with an insulating tube 206 on one side. One end of the four cables 6 is fixedly connected to the other end of the four first conductive sheets 203.

[0041] Furthermore, through the stable connection between the central block 201 and the positioning frame 202, precise positioning is provided for the cable 6 and the conductive components. The first conductive sheet 203 and the conductive plate 204 are made by a metal stamping and bending process, which ensures the conductive performance while ensuring the compactness of the structure. The first insulating plate 205 and the insulating tube 206 are made of high-temperature baked ceramic materials to effectively isolate electrical components and improve safety. The cable 6 is connected to the first conductive sheet 203 through a precise wiring process to ensure the reliability of current transmission.

[0042] In the preferred technical solution of this embodiment, please refer to Figure 8 The electromagnetic transmission mechanism 3 includes a mounting sleeve 301, which is fixedly connected between the two support plates 105. A mounting plate 302 is fixedly connected to the lower end of the mounting sleeve 301. A positioning sleeve 303 is arranged between the mounting plate 302 and the mounting sleeve 301. A coil 304 is arranged on the outer fixed sleeve of the positioning sleeve 303. The coil 304 is electrically connected to the driving circuit board 103. A pull rod 305 is arranged on the sliding sleeve at the upper center of the inner center of the mounting sleeve 301 and the inner center of the mounting plate 302. The sliding sleeve at the upper outer side of the pull rod 305 is arranged inside the sliding tube 106. A magnetic block 306 is arranged on the outer fixed sleeve of the pull rod 305. The magnetic block 306 is slidingly arranged inside the positioning sleeve 303.

[0043] Furthermore, the electromagnetic transmission mechanism 3 is the key to the circuit breaker's on-off operation. The positioning sleeve 303 between the mounting sleeve 301 and the mounting plate 302 provides a stable installation environment for the coil 304. The coil 304 generates electromagnetic force under the control of the driving circuit board 103, driving the magnetic block 306 to drive the pull rod 305 to move up and down. The magnetic block 306 on the outside of the pull rod 305 interacts with the magnetic field in the positioning sleeve 303, thereby enhancing the stability and efficiency of the transmission. The up and down movement of the pull rod 305 drives the circuit on-off mechanism 4 through the insulating linkage bar 4010 to complete the circuit on-off operation.

[0044] In the preferred technical solution of this embodiment, please refer to Figure 9-10The circuit on-off mechanism 4 includes two insulating limit tubes 401 and two U-shaped support frames 402. The two insulating limit tubes 401 are respectively fixedly connected to the center of the upper end of the center block 201 on both sides. The two U-shaped support frames 402 are respectively fixedly connected to the center of the lower end of the mounting plate 302 on both sides. The two U-shaped support frames 402 are both slidably sleeved with guide rods 403 at the lower center of the two U-shaped support frames 402. The upper ends of the two guide rods 403 are both fixedly connected to the limit buckles 404. The lower ends of the two guide rods 403 are both fixedly connected to the The two docking buckles 405 are fixedly connected with docking rods 406 at the centers of the lower ends of the two docking buckles 405, and the lower ends of the two docking rods 406 are rotatably connected with the second insulating plates 407, and the upper ends of the two second insulating plates 407 are fixedly connected with the second conductive sheets 408, and the lower ends of the two second conductive sheets 408 are fixedly connected with conductive pillars 409 on both sides, and the four conductive pillars 409 respectively penetrate the lower ends of the two second insulating plates 407, and the four conductive pillars 409 are respectively slidably sleeved inside the four insulating tubes 206, and the four The conductive pillars 409 are detachably connected to the four insulating tubes 206, respectively. The two second conductive sheets 408 are rotatably sleeved on the outside of the two docking rods 406, respectively. An insulating linkage bar 4010 is provided at the center of the upper ends of the two second conductive sheets 408. The insulating linkage bar 4010 is fixedly sleeved on the upper part of the outer sides of the two docking rods 406. The center of the upper end of the insulating linkage bar 4010 is fixedly connected to the pull rod 305. The lower ends of the two second insulating plates 407 are fixedly connected to insulating rods 4011. Guide blocks 4012 are fixedly connected to the lower parts of the outer ends of the two insulating rods 4011, guide grooves 4013 are penetrated on both sides of the two insulating limit tubes 401, and the four guide blocks 4012 are slidably sleeved in the four guide grooves 4013 respectively. Reset springs 4014 are sleeved at the lower parts of the outer sides of the two guide rods 403, and the lower ends of the two reset springs 4014 are in contact with the top ends of the two docking buckles 405 respectively, and the upper ends of the two reset springs 4014 are in contact with the bottom ends of the two U-shaped support frames 402 respectively.

[0045] Furthermore, the circuit on-off mechanism 4 realizes stable sliding between the docking buckle 405 and the limit buckle 404 through the precise cooperation between the insulating limit tube 401 and the U-shaped support frame 402. The reset spring 4014 on the guide rod 403 provides a reset force for the docking buckle 405 to ensure that it can quickly return to the initial position when power is required. The second conductive sheet 408 is detachably connected to the insulating tube 206 through the conductive column 409 to realize the on-off of the circuit. When the circuit needs to be disconnected, the pull rod 305 drives the insulating linkage bar 4010 to move, and the insulating linkage bar 4010 drives the two second insulating plates 407, the two second conductive sheets 408, and the two insulating rods 4011 to move. When the two insulating rods 4011 move, they are constrained by the guide block 4012 and the guide groove 4013, so that the two insulating rods 4011 move upward and rotate at the same time, so that the two insulating rods 4011 synchronously drive the second insulating plate 407 and the two second conductive sheets 408 to complete the lifting, offset and rotation, thereby realizing reliable on-off of the circuit.

[0046] In the preferred technical solution of this embodiment, please refer to Figure 11-Figure 14 The arc extinguishing mechanism 5 includes an insulating arc extinguishing chamber 501, which is fixedly connected to one side of the positioning frame 202. Arc extinguishing baffles 502 and arc extinguishing filters 503 are arranged at one end of the insulating arc extinguishing chamber 501 near the ventilation hole 107. Airflow guide plates 504 are fixedly connected to the upper and lower ends of one side of the center of the insulating arc extinguishing chamber 501. A plurality of spoilers 505 are fixedly connected to the upper end of the upper airflow guide plate 504 and the upper inner wall of the insulating arc extinguishing chamber 501. A plurality of spoilers 505 are fixedly connected to the lower end of the lower airflow guide plate 504 and the lower inner wall of the insulating arc extinguishing chamber 501. Baffles 506 are fixedly connected to both sides of the insulating arc extinguishing chamber 501, and a plurality of arc extinguishing grids 507 are fixedly connected between the two baffles 506.

[0047] Furthermore, the core of the arc extinguishing mechanism 5 is the insulating arc extinguishing chamber 501, which is the main place for arc suppression and dissipation and is firmly fixed to one side of the positioning frame 202. When the four conductive columns 409 are separated from the corresponding four conductive plates 204, arcing will occur instantly. At this time, the four insulating tubes 206 surrounding the conductive columns 409 respond quickly, effectively blocking the straight path of the arc, and preventing the arc from further elongating and spreading. The initially controlled arc is then guided into the insulating arc extinguishing chamber 501, where the arc is attracted by multiple arc extinguishing grids 507. The arc extinguishing grids 507 not only increase the contact area between the arc and the surrounding medium, but also weaken the energy of the arc by physical segmentation. At the same time, the high temperature generated by the arc quickly heats the air in the insulating arc extinguishing cavity 501, causing it to expand and generate outward pressure, pushing the hot air out through the ventilation holes 107. In this process, the airflow guide plates 504 play a key role. The two airflow guide plates 504 are respectively located at the upper and lower ends of the insulating arc extinguishing cavity 501, closely connected to the upper and lower inner walls, and are equipped with a plurality of spoilers 505. These spoilers 505 05 enhances the disturbance and mixing of the gas in the cavity, thereby accelerating the dissipation of heat and the replenishment of cold air. The spoiler 505 further increases the complexity of the gas flow, improves the heat exchange efficiency, and helps to quickly reduce the temperature in the insulating arc extinguishing cavity 501. In addition, the setting of the two baffles 506 is also key. They not only serve as part of the internal structure of the insulating arc extinguishing cavity 501, but also play a role in physical isolation, effectively preventing the arc from directly impacting or damaging other surrounding components. This layout not only protects the overall safety of the equipment, but also ensures the smoothness of the arc extinguishing process. The arc extinguishing mechanism 5 achieves efficient suppression and dissipation of the arc through the multiple arc extinguishing elements in the insulating arc extinguishing cavity 501, such as the arc extinguishing baffle 502, the arc extinguishing filter 503, the arc extinguishing grid 507, and the precise coordination of the airflow guide plate 504 and the spoiler 505 of the airflow guide system, as well as the protective function of the baffle 506. The design of the entire mechanism fully considers the physical characteristics and thermal effects of the arc, and ensures that the equipment can quickly return to a stable state when an arc occurs by optimizing the gas flow path and enhancing the heat exchange efficiency, thereby ensuring the safe operation of the power system.

[0048] A method for manufacturing an intelligent circuit breaker with functional safety double arc extinguishing channels comprises the following steps:

[0049] S1. First, the lower protective cover 101, the upper protective cover 102, the isolation cover 104, the support sheet 105, the slide tube 106, the center block 201, the positioning frame 202, the mounting sleeve 301, the mounting plate 302, the positioning sleeve 303, the pull rod 305, the insulating limit tube 401, the U-shaped support frame 402, the guide rod 403 and the airflow guide plate 504 are manufactured by a precision plastic equipment injection molding process;

[0050] S2, then the first conductive sheet 203, the conductive plate 204, the second conductive sheet 408, the conductive column 409 and the arc extinguishing grid 507 key conductive and safety components are precisely produced by professional metal stamping and bending equipment;

[0051] S3, then the first insulating plate 205, the insulating tube 206, the insulating limit tube 401, the second insulating plate 407, the insulating linkage bar 4010, the insulating rod 4011 and the insulating arc extinguishing chamber 501 key insulating components are made of high temperature baked ceramic materials;

[0052] S4. Finally, the structures mentioned in step S1, step S2 and step S3 are assembled and spliced ​​to obtain an intelligent circuit breaker with functional safety dual arc extinguishing channels.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent circuit breaker with functional safety dual arc extinguishing channels, comprising a protection mechanism (1) and four cables (6), characterized in that: The protection mechanism (1) is provided with a circuit switching mechanism (4) for power transmission, an electromagnetic transmission mechanism (3) is provided at the upper part of the protection mechanism (1) for driving the circuit switching mechanism (4) to complete circuit switching, arc extinguishing mechanisms (5) are provided at both ends of the protection mechanism (1) for arc extinguishing, and a positioning mechanism (2) is provided inside the protection mechanism (1) for installing and positioning four arc extinguishing mechanisms (5); The circuit on-off mechanism (4) comprises two insulating limit tubes (401) and two U-shaped support frames (402); guide rods (403) are slidably sleeved at the lower center of the two U-shaped support frames (402); the upper ends of the two guide rods (403) are fixedly connected to limit buckles (404); the lower ends of the two guide rods (403) are fixedly connected to docking buckles (405); the centers of the lower ends of the two docking buckles (405) are fixedly connected to docking rods (406); and the lower ends of the two docking rods (406) are rotatably connected to second insulating plates (407); The upper ends of the two second insulating plates (407) are fixedly connected to second conductive sheets (408), the lower ends of the two second conductive sheets (408) are fixedly connected to conductive columns (409) on both sides, the four conductive columns (409) respectively penetrate the lower ends of the two second insulating plates (407), the two second conductive sheets (408) are respectively rotatably sleeved on the outside of the two docking rods (406), an insulating linkage bar (4010) is provided at the center of the upper ends of the two second conductive sheets (408), and the insulating linkage bar (4010) is fixedly sleeved on the upper outside of the two docking rods (406); The lower ends of the two second insulating plates (407) are fixedly connected to insulating rods (4011), the lower ends of the outer sides of the two insulating rods (4011) are fixedly connected to guide blocks (4012), both sides of the two insulating limit tubes (401) are penetrated by guide grooves (4013), and the four guide blocks (4012) are slidably mounted inside the four guide grooves (4013) respectively.

2. According to claim 1, an intelligent circuit breaker with functional safety double arc extinguishing channels is characterized in that: The protection mechanism (1) comprises a lower protection cover (101), the upper end of the lower protection cover (101) is fixedly connected to an upper protection cover (102), a driving circuit board (103) is mounted on one side of the lower protection cover (101) and the upper protection cover (102), an isolation cover (104) for protecting the driving circuit board (103) is fixedly connected to one side of the upper protection cover (102) and the lower protection cover (101) close to the driving circuit board (103), support sheets (105) are fixedly connected to both sides of the center of the upper inner wall of the upper protection cover (102), a sliding tube (106) is fixedly sleeved at the upper center of the upper protection cover (102), and a plurality of ventilation holes (107) are arranged and penetrated on both sides of the upper protection cover (102).

3. The intelligent circuit breaker with functional safety dual arc extinguishing channels according to claim 2 is characterized in that: The positioning mechanism (2) comprises a central block (201), the central block (201) being fixedly connected to the lower inner wall of the lower protective cover (101), the central block (201) being fixedly connected to positioning frames (202) on both sides, the centers of the two positioning frames (202) close to each other being fixedly connected to first conductive sheets (203) on both sides, one end of each of the four first conductive sheets (203) being fixedly connected to a conductive plate (204) at the upper part, the upper ends of the four conductive plates (204) being fixedly connected to a first insulating plate (205), and the insides of the four first insulating plates (205) being fixedly sleeved with insulating tubes (206) at one side.

4. The intelligent circuit breaker with functional safety dual arc extinguishing channels according to claim 3 is characterized in that: One end of each of the four cables (6) is fixedly connected to the other end of each of the four first conductive sheets (203).

5. The intelligent circuit breaker with functional safety double arc extinguishing channels according to claim 4 is characterized in that: The electromagnetic transmission mechanism (3) comprises a mounting sleeve (301), wherein the mounting sleeve (301) is fixedly connected between two support plates (105), a mounting plate (302) is fixedly connected to the lower end of the mounting sleeve (301), a positioning sleeve (303) is arranged between the mounting plate (302) and the mounting sleeve (301), a coil (304) is arranged on the outer fixed sleeve of the positioning sleeve (303), and the coil (304) is electrically connected to the driving circuit board (103), a pull rod (305) is arranged at the upper center of the inner part of the mounting sleeve (301) and the sliding sleeve at the inner center of the mounting plate (302), the sliding sleeve at the upper outer part of the pull rod (305) is arranged inside the sliding tube (106), and a magnetic block (306) is arranged on the outer fixed sleeve of the pull rod (305), and the magnetic block (306) is slidingly arranged inside the positioning sleeve (303).

6. The intelligent circuit breaker with functional safety double arc extinguishing channels according to claim 5 is characterized in that: The two insulating limit tubes (401) are respectively fixedly connected to the center of the upper end of the center block (201) on both sides, and the two U-shaped support frames (402) are respectively fixedly connected to the center of the lower end of the mounting plate (302) on both sides.

7. The intelligent circuit breaker with functional safety double arc extinguishing channels according to claim 6 is characterized in that: The four conductive posts (409) are respectively slidably sleeved inside the four insulating tubes (206), and the four conductive posts (409) are respectively detachably connected to the four insulating tubes (206). The center of the upper end of the insulating linkage bar (4010) is fixedly connected to the pull rod (305).

8. The intelligent circuit breaker with functional safety double arc extinguishing channels according to claim 7 is characterized in that: A return spring (4014) is sleeved on the lower outer sides of the two guide rods (403), the lower ends of the two return springs (4014) are respectively in contact with the top ends of the two docking buckles (405), and the upper ends of the two return springs (4014) are respectively in contact with the bottom ends of the two U-shaped support frames (402).

9. The intelligent circuit breaker with functional safety double arc extinguishing channels according to claim 8, characterized in that: The arc extinguishing mechanism (5) comprises an insulating arc extinguishing chamber (501), the insulating arc extinguishing chamber (501) being fixedly connected to one side of the positioning frame (202), an arc extinguishing baffle (502) and an arc extinguishing filter (503) being arranged in an array at one end of the insulating arc extinguishing chamber (501) near the ventilation hole (107), an airflow guide plate (504) being fixedly connected to both upper and lower ends of one side of the center of the insulating arc extinguishing chamber (501), a plurality of spoilers (505) being arranged and fixedly connected at the upper end of the airflow guide plate (504) and the upper inner wall of the insulating arc extinguishing chamber (501), a plurality of spoilers (505) being arranged and fixedly connected at the lower end of the airflow guide plate (504) and the lower inner wall of the insulating arc extinguishing chamber (501), a baffle plate (506) being fixedly connected to both sides of the insulating arc extinguishing chamber (501), and a plurality of arc extinguishing grids (507) being fixedly connected between the two baffle plates (506).

10. The manufacturing method of a smart circuit breaker with functional safety dual arc extinguishing channels according to claim 9, characterized in that: The following steps are involved: S1. First, a lower protective cover (101), an upper protective cover (102), an isolation cover (104), a support sheet (105), a sliding tube (106), a center block (201), a positioning frame (202), a mounting sleeve (301), a mounting plate (302), a positioning sleeve (303), a pull rod (305), an insulating limit tube (401), a U-shaped support frame (402), a guide rod (403) and an airflow guide plate (504) are manufactured by a precision plastic equipment injection molding process; S2, then the key conductive and safety components of the first conductive sheet (203), the conductive plate (204), the second conductive sheet (408), the conductive column (409) and the arc extinguishing grid (507) are precisely produced by professional metal stamping and bending equipment; S3, then the key insulating components of the first insulating plate (205), the insulating tube (206), the insulating limit tube (401), the second insulating plate (407), the insulating linkage strip (4010), the insulating rod (4011) and the insulating arc extinguishing chamber (501) are made of high-temperature baked ceramic materials; S4. Finally, the structures in step S1, step S2 and step S3 are assembled and spliced ​​to obtain an intelligent circuit breaker with functional safety dual arc extinguishing channels.

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