Pluggable intelligent internet-of-things circuit breaker

By designing the circuit breaker as a plug-in and unplugged intelligent IoT circuit breaker with two parts and equipped with modular measuring devices, the problem of insufficient expansion of traditional circuit breakers is solved, and flexible expansion and rapid maintenance of functions are achieved, which improves production efficiency and reliability.

CN223193723UActive Publication Date: 2025-08-05ZHEJIANG BOCHUANG POWER TECH CO LTD
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Patent Information

Application Number
CN202422010016.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-19
Publication Date
2025-08-05
Estimated Expiration
2034-08-19

AI Technical Summary

Technical Problem

The functional expansion and flexibility of traditional circuit breakers are insufficient, resulting in difficulty in disassembly and assembly, inconvenient maintenance and increased costs.

Method used

A plug-in intelligent IoT circuit breaker is designed to divide the circuit breaker body into two detachable parts, connected through a plug-in structure, equipped with a split-closing control device and a modular measuring device to achieve flexible expansion and rapid maintenance of functions.

Benefits of technology

It improves the functional expansion and flexibility of the circuit breaker, simplifies the maintenance process, reduces the maintenance cost and time, and meets the high requirements of modern power systems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a plug-in type intelligent Internet of Things circuit breaker, which comprises a circuit breaker body and a switch-on and switch-off control device, the opening and closing control device is used for executing opening and closing control on the circuit breaker body to realize connection and disconnection of a circuit, and the circuit breaker body comprises a first circuit breaker body, a second circuit breaker body and a plugging structure; the first circuit breaker body comprises a first shell and a first wiring board arranged in the first shell, and the second circuit breaker body comprises a second shell and a second wiring board arranged in the second shell; the first housing and the second housing are detachably connected through a plugging structure, and the first wiring board and the second wiring board are electrically connected through the plugging structure. The circuit breaker body is divided into two detachable parts, so that a manufacturer can flexibly install different measuring devices or functional modules in the shell of the first circuit breaker body or the second circuit breaker body according to the actual requirements of a user, and the function expansibility and flexibility of the circuit breaker are greatly improved.
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Description

Technical Field

[0001] The utility model relates to the field of power system protection equipment, in particular to a plug-in intelligent Internet of Things circuit breaker. Background Art

[0002] With the development of power systems, the functional requirements for circuit breakers are becoming increasingly diverse. However, traditional circuit breakers generally adopt an integrated structure design. Although this design is compact and easy to operate, it cannot meet the functional scalability and flexibility requirements of modern power systems.

[0003] Currently, in order to expand the functions of circuit breakers, external devices are often required, which not only increases the complexity and cost of the system, but may also lead to problems such as unstable signal transmission and difficult maintenance.

[0004] Therefore, there is an urgent need for a new type of circuit breaker design that can achieve flexible function expansion and rapid maintenance while maintaining basic opening and closing functions. Utility Model Content

[0005] In view of the above problems, this application proposes a new plug-in smart IoT circuit breaker design scheme, which aims to solve the problems of difficult disassembly and assembly, inconvenient maintenance, and limited functional expansion of traditional circuit breakers, realize flexible expansion and rapid maintenance of circuit breaker functions, and improve the production efficiency, reliability and economy of circuit breakers.

[0006] In a first aspect, a pluggable intelligent IoT circuit breaker is provided, comprising a circuit breaker body and an opening and closing control device, wherein the opening and closing control device is configured to control the opening and closing of the circuit breaker body to connect and disconnect a circuit. The circuit breaker body comprises a first circuit breaker body, a second circuit breaker body, and a plug-in / plug-out structure.

[0007] The first circuit breaker body includes a first shell and a first terminal block arranged in the first shell, and the second circuit breaker body includes a second shell and a second terminal block arranged in the second shell; the first shell and the second shell are detachably connected through the plug-in structure, and the first terminal block and the second terminal block are electrically connected through the plug-in structure.

[0008] Optionally, the plug-in structure includes at least one set of matching springs and sockets;

[0009] The elastic sheet is provided on the second housing and has a fixed end and a free end, the fixed end is connected to the second housing, and the free end has a locking portion formed by at least one protrusion or groove;

[0010] The socket is embedded in the first housing and has a channel for the free end of the elastic sheet to be inserted into, and a locking groove or a protrusion located inside the channel and corresponding to the locking portion.

[0011] Optionally, the spring sheet and the socket are both conductors, and the socket is electrically connected to the first wiring board in the first shell, and the spring sheet is electrically connected to the second wiring board in the second shell.

[0012] Optionally, the socket is a copper socket, and the spring is a spring steel sheet.

[0013] Optionally, the first circuit breaker body further comprises a handle, and a main shaft hole is provided at the rotation center of the handle;

[0014] The opening and closing control device includes a third housing, and a control module, a motor, a transmission mechanism, a sector gear and an output main shaft arranged in the third housing;

[0015] The motor is in transmission cooperation with the transmission mechanism, and the transmission mechanism is in transmission cooperation with the sector gear. One end of the output main shaft is fixedly arranged at the center of the sector gear, and the other end extends out of the third housing and is inserted into the main shaft hole of the handle; the control module is used to control the motor to drive the transmission mechanism to drive the sector gear to rotate, and the sector gear drives the output main shaft to rotate, thereby realizing remote opening and closing operations.

[0016] Optionally, the transmission mechanism includes a worm, a turbine and a transmission gear;

[0017] The worm is connected to the output shaft of the motor, and the motor is used to drive the worm to rotate clockwise or counterclockwise. The worm is engaged with the turbine, the turbine is engaged with the transmission gear, and the transmission gear is engaged with the sector gear.

[0018] Optionally, the first circuit breaker body further includes an operating mechanism for mechanically opening and closing the handle, the operating mechanism including a first working state and a second working state, when the operating mechanism is in the first working state, the handle is in the closed position, and when the operating mechanism is in the second working state, the handle is in the open position;

[0019] The opening and closing control device further includes a tripping mechanism and a tripping shaft, wherein the tripping mechanism is disposed in the third housing and is connected to the control module, and one end of the tripping shaft is movably disposed in the third housing, and the other end extends out of the third housing and is connected to the operating mechanism;

[0020] The control module is used to control the tripping mechanism to drive the tripping shaft to move so that the tripping shaft is located in the first position or the second position; when the tripping shaft is located in the first position, the operating mechanism is in the first working state; when the tripping shaft is located in the second position, the operating mechanism is in the second working state.

[0021] Optionally, the tripping mechanism includes a leakage tripper and a tripping lever, and the leakage tripper is connected to the control module;

[0022] The control module is used to control the leakage release to drive the trip lever to move the trip shaft from the first position to the second position.

[0023] Optionally, the third shell is fixed to the first shell by riveting.

[0024] Optionally, the second circuit breaker body further includes a measuring device arranged in the second shell, and the measuring device includes at least one of a metering transformer, a leakage transformer, a zero-sequence transformer, and a temperature controller.

[0025] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0026] The plug-in intelligent IoT circuit breaker provided by the embodiment of the present invention, by dividing the circuit breaker body into two detachable parts, allows the manufacturer to flexibly install different measuring devices or functional modules in the housing of the first circuit breaker body or the second circuit breaker body according to the actual needs of the user, thereby greatly improving the functional scalability and flexibility of the circuit breaker. At the same time, when a circuit breaker fails, only the problematic part needs to be replaced or repaired, without the need for overall replacement, which greatly shortens the maintenance time and reduces the maintenance cost. It has the advantages of strong functional scalability, easy maintenance, improved production efficiency, cost savings, and strong innovation. The modular design achieves flexible functional expansion and rapid maintenance, meeting the high requirements of modern power systems for circuit breakers.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 This is a three-dimensional schematic diagram of a pluggable intelligent Internet of Things circuit breaker provided by an embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of a pluggable intelligent Internet of Things circuit breaker provided by an embodiment of the utility model;

[0031] Figure 3 This is a structural diagram of a circuit breaker body provided by an embodiment of the present utility model;

[0032] Figure 4 and Figure 5 Schematic diagram of the structure of the pluggable intelligent IoT circuit breaker provided by the embodiment of the utility model from two different perspectives;

[0033] Figure 6 This is a schematic diagram of the internal structure of a switch opening and closing control device provided by an embodiment of the utility model;

[0034] Figure 7 This is a partial structural diagram of a tripping mechanism provided by an embodiment of the present utility model;

[0035] Figure 8 This is a structural diagram of another circuit breaker body provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present disclosure will be described below in more detail with reference to the accompanying drawings.

[0037] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments of the present disclosure. These figures are not drawn to scale, and for the purpose of clarity, certain details are exaggerated and certain details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0038] In the context of this disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element may be directly on the other layer / element or an intervening layer / element may exist therebetween. Additionally, if a layer / element is "on" another layer / element in one orientation, the layer / element may be "below" the other layer / element when the orientation is reversed. In the context of this disclosure, similar or identical components may be denoted by the same or similar reference numerals.

[0039] In order to better understand the above technical solution, the above technical solution will be described in detail below in combination with specific implementation methods. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0040] Figure 1 This is a three-dimensional schematic diagram of a pluggable intelligent IoT circuit breaker provided by an embodiment of the present utility model. Figure 1 As shown, the plug-in intelligent IoT circuit breaker 100 includes a circuit breaker body 10 and an opening and closing control device 20. The opening and closing control device 20 is used to perform opening and closing control on the circuit breaker body 10 to realize the connection and disconnection of the circuit.

[0041] It should be noted that, in this embodiment, the pluggable intelligent IoT circuit breaker 100 may include one or more circuit breaker bodies, which can be configured according to specific needs, and the multiple circuit breaker bodies can be fixedly connected by bolts or rivets.

[0042] Figure 2 This is a schematic diagram of the three-dimensional structure of a pluggable intelligent Internet of Things circuit breaker provided by an embodiment of the utility model. Figure 2 As shown, the circuit breaker body 10 includes a first circuit breaker body 11, a second circuit breaker body 12, and a plug-in structure (see Figure 3 ).

[0043] Figure 3 This is a schematic diagram of the structure of a circuit breaker body provided by an embodiment of the present utility model. Figure 3 As shown, the first circuit breaker body 11 includes a first housing 11a and a first terminal block (not shown) disposed within the first housing 11a. The second circuit breaker body 12 includes a second housing 12a and a second terminal block (not shown) disposed within the second housing 12a. The first housing 11a and the second housing 12a are detachably connected via a plug-in structure 13, and the first terminal block and the second terminal block are electrically connected via the plug-in structure 13.

[0044] In this embodiment, the first terminal block is an incoming terminal block, and the second terminal block is an outgoing terminal block. The first shell 11a is also provided with an incoming port electrically connected to the incoming terminal block, and the second shell 12a is also provided with an outgoing port electrically connected to the outgoing terminal block.

[0045] In one implementation of this embodiment, Figure 3As shown, the plug-in / plug-out structure 13 includes at least one matching socket 131 and spring 132. Spring 132 is mounted on the second housing 12a and has a fixed end and a free end. The fixed end is connected to the second housing 12a, and the free end has a locking portion (not shown) formed by at least one protrusion or groove. The socket 131 is embedded in the first housing 11a and has a channel for inserting the free end of the spring, as well as a locking groove or protrusion (not shown) located within the channel that corresponds to the locking portion.

[0046] To connect the two housings, align the spring clip 132 of the first housing 11a with the socket 131 of the second housing 12a and apply a push. The spring clip 132 elastically deforms until its locking portion engages with the locking groove or protrusion of the socket 131, forming a locked state and firmly connecting the two housings. To separate the two housings, apply an external force in the opposite direction, causing the spring clip 132 to deform again, disengaging the locking portion from the locking groove or protrusion, allowing the housings to be quickly separated. This plug-and-unplug mechanism offers the advantages of simple structure, convenient operation, secure connection, and ease of quick disassembly. It significantly improves the efficiency and reliability of connecting and disconnecting components, making it suitable for a variety of applications requiring frequent connection and disconnection.

[0047] In other implementations of this embodiment, the plug-in structure 13 may also be in other forms, such as a rotary plug-in structure, a slide rail plug-in structure, etc., which is not limited in the present invention.

[0048] Figure 4 and Figure 5 Schematic diagram of the structure of the plug-in intelligent IoT circuit breaker provided by the embodiment of the utility model from two different perspectives, such as Figure 4 As shown, a first jack is provided on the first housing 11a, one end of the socket 131 is embedded in the first jack, and the other end protrudes from the first housing 11a. Figure 5 As shown, the second housing 12a is provided with a second insertion hole opposite to the first insertion hole, the fixed end of the elastic piece 132 is embedded in the second insertion hole, and the free end is protruded from the second housing 12a.

[0049] Optionally, the spring piece 132 and the socket 131 are both conductors, and the socket 131 is electrically connected to the first terminal block in the first shell 11a, and the spring piece 132 is electrically connected to the second terminal block in the second shell 12a, so as to realize the electrical connection between the first terminal block and the second terminal block.

[0050] Optionally, the socket 131 is a copper socket and the spring sheet 132 is a spring steel sheet. Both the copper socket and the spring steel spring sheet have good electrical conductivity, wear resistance, and corrosion resistance, which can ensure that the plug-in structure has good electrical conductivity, safety, and usability, and help reduce the frequency of replacement and maintenance of the plug-in structure.

[0051] Optional, such as Figure 2 As shown, the first circuit breaker body 11 further includes a handle 11 b , and a main shaft hole is provided at the rotation center of the handle.

[0052] Figure 6 This is a schematic diagram of the internal structure of a switch opening and closing control device provided by an embodiment of the present utility model. Figure 6 As shown, combined Figure 2 The opening and closing control device 20 includes a third housing 20 a , and a control module, a motor 21 , a transmission mechanism 22 , a sector gear 23 and an output main shaft 24 arranged in the third housing 20 a .

[0053] The motor 21 engages with the transmission mechanism 22, which in turn engages with the sector gear 23. One end of the output spindle 24 is fixedly mounted at the center of the sector gear 23, while the other end extends out of the third housing 20a and into the spindle hole of the handle 11b. The control module controls the motor 21 to drive the transmission mechanism 22, which in turn rotates the sector gear 23, which in turn drives the output spindle 24, thus enabling remote opening and closing operations.

[0054] The opening and closing control device 20 provided in this embodiment can execute the opening or closing command received remotely. Figure 6 The handle shown in the figure is in the closing position. When the control module remotely receives the opening command, the control motor 21 drives the transmission mechanism 22 to drive the sector gear 23 to rotate in the clockwise direction, so that the handle is rotated to the opening position. When the control module remotely receives the closing command, the control motor 21 drives the transmission mechanism 22 to drive the sector gear 23 to rotate in the counterclockwise direction, so that the handle is rotated to the closing position. Figure 6 The closed position is shown.

[0055] Optionally, the transmission mechanism 22 includes a worm 221, a turbine 222, and a transmission gear 223. The worm 221 is connected to the output shaft of the motor 21, and the motor 21 is used to drive the worm 221 to rotate clockwise or counterclockwise. The worm 221 is meshed with the turbine 222, the turbine 222 is meshed with the transmission gear 223, and the transmission gear 223 is meshed with the sector gear 23.

[0056] Optionally, the first circuit breaker body 11 further includes an operating mechanism for mechanically opening and closing the handle. The operating mechanism includes a first operating state and a second operating state. When the operating mechanism is in the first operating state, the handle is in the closed position. When the operating mechanism is in the second operating state, the handle is in the open position. The operating mechanism is a conventional structure in the art and will not be described in detail in the present embodiment.

[0057] The opening and closing control device 20 further includes a tripping mechanism 25 and a tripping shaft 26 (see Figure 2), the tripping mechanism 25 is disposed in the third housing 20a and connected to the control module. One end of the tripping shaft 26 is movably disposed in the third housing 20a, and the other end extends out of the third housing 20a and is connected to the operating mechanism.

[0058] The control module is used to control the tripping mechanism 25 to drive the tripping shaft 26 to move so that the tripping shaft 26 is located in the first position or the second position; when the tripping shaft 26 is located in the first position, the operating mechanism is in the first working state; when the tripping shaft 26 is located in the second position, the operating mechanism is in the second working state.

[0059] In this embodiment, the motor, transmission mechanism, and sector gear cooperate to implement the first type of remote automatic opening and closing control. The trip mechanism 25 and trip shaft 26 cooperate to similarly remotely control the opening and closing of the circuit breaker, thus implementing the second type of remote automatic opening and closing control. By providing two remote automatic opening and closing control modes, they can serve as backups for each other. If one control mode fails, the other can continue to operate, thereby ensuring continuous power supply and stable operation of the power system.

[0060] Optionally, the tripping mechanism 25 includes a leakage tripper 251 and a tripping lever 252. The leakage tripper 251 is connected to the control module. The control module is used to control the leakage tripper 251 to drive the tripping lever 252 to move the tripping shaft 26 from the first position to the second position.

[0061] In this embodiment, the control module includes a circuit board 261, and a wireless communication antenna 262 and a communication chip 263 connected to the circuit board 261. The wireless communication antenna 262 is used to realize wireless transmission and reception of data, and the communication chip 263 is used to control the leakage release 251 or the motor 21 to realize remote opening and closing. It is also used to obtain circuit parameters, process the circuit parameters, and send them to the cloud platform or APP via wireless transmission, and then store them. The circuit parameters include at least parameters such as current, voltage, power, temperature, leakage value, and the number of times the switch is used. By sending the circuit parameters to the cloud platform or APP and displaying them through the mini program, the power microgrid management is facilitated.

[0062] Figure 7 This is a partial structural diagram of a tripping mechanism provided by an embodiment of the present utility model. Figure 7 As shown, when the control module receives the remote tripping command, the control module controls the ejector rod in the leakage release 251 to push out, so as to drive the trip lever 252 to rotate counterclockwise around its center, and move the trip shaft 26 from the first position a to the second position b.

[0063] It should be noted that when the ejector rod in the control leakage release 251 is not ejected, the trip lever 252 is driven to rotate clockwise about its center, causing the trip shaft 26 to return to the first position a. In this embodiment, the position of the trip shaft 26 is controlled by levering. The trip lever 252 is limited by limiting the position of the positioning shaft 223a of the transmission gear 223 located on both sides of the trip lever 252. The transmission gear 223 is mounted on the positioning shaft 223a, and the positioning shaft 223a and the trip lever 252 are both fixedly mounted on the third housing 20a.

[0064] Optional, such as Figure 1 As shown, the third housing 20a is riveted to the first housing 11a to ensure the stability of the connection between the circuit breaker body 10 and the opening and closing control device 20. In other implementations of this embodiment, the third housing 20a and the first housing 11a can also be fixedly connected by bolts or other structures, which is not limited in this utility model.

[0065] Optionally, the first housing 11 a and the second housing 12 a may also be fixed by riveting to ensure the connection stability between the first circuit breaker body 11 and the second circuit breaker body 12 .

[0066] It should be noted that in this embodiment, before the circuit breaker is manufactured, the first housing 11a and the second housing 12a can be detachably connected via the plug-in structure 13. This allows the manufacturer to flexibly install different measuring devices or functional modules within the housing of the first or second circuit breaker body according to actual user needs, thereby improving the functional expandability and flexibility of the circuit breaker. After the circuit breaker leaves the factory, to ensure user electrical safety, the first housing 11a and the second housing 12a need to be connected in a manner that is not removable by the user, such as by riveting. In other implementations of this embodiment, the first housing 11a and the second housing 12a can also be non-detachably fixed using other methods, which are not limited in this embodiment.

[0067] Optionally, the second circuit breaker body 12 further includes a measuring device disposed within the second housing 12a. The measuring device includes at least one of a metering transformer, a leakage transformer, a zero-sequence transformer, and a temperature controller. Users can flexibly install different measuring devices based on actual needs, greatly improving the functional expandability and flexibility of the circuit breaker.

[0068] In specific implementation, a slot for accommodating and fixing a required measuring device may be reserved in the second housing 12a. Figure 8 This is a schematic diagram of the structure of another circuit breaker body provided by an embodiment of the present invention. Figure 8As shown, the second housing 12a is provided with a metering transformer 30 and a zero-sequence transformer 40. The metering transformer 30 is used to measure electrical parameters such as voltage, current, electric power, and electric energy. The zero-sequence transformer 40 is used to measure zero-sequence current. Zero-sequence current is a current whose vector sum of the three-phase currents is zero, and is usually generated when a ground fault occurs in the system.

[0069] It should be noted that, in this embodiment, each measuring device is electrically connected to the control module, and the controller can obtain the circuit parameters monitored by each measuring device, and then send or store the obtained circuit parameters.

[0070] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0071] The plug-in intelligent IoT circuit breaker provided by the embodiment of the present invention, by dividing the circuit breaker body into two detachable parts, allows the manufacturer to flexibly install different measuring devices or functional modules in the housing of the first circuit breaker body or the second circuit breaker body according to the actual needs of the user, thereby greatly improving the functional scalability and flexibility of the circuit breaker. At the same time, when a circuit breaker fails, only the problematic part needs to be replaced or repaired, without the need for overall replacement, which greatly shortens the maintenance time and reduces the maintenance cost. It has the advantages of strong functional scalability, easy maintenance, improved production efficiency, cost savings, and strong innovation. The modular design achieves flexible functional expansion and rapid maintenance, meeting the high requirements of modern power systems for circuit breakers.

[0072] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0073] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various invention aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, invention aspects lie in less than all of the features of the individual embodiments disclosed above. Accordingly, the claims that follow the detailed description are hereby expressly incorporated into this detailed description, with each claim itself serving as a separate embodiment of the present invention.

[0074] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A plug-in intelligent IoT circuit breaker, comprising a circuit breaker body and an opening and closing control device, wherein the opening and closing control device is used to perform opening and closing control on the circuit breaker body to realize the connection and disconnection of the circuit, characterized in that: The circuit breaker body includes a first circuit breaker body, a second circuit breaker body, and a plug-in structure; The first circuit breaker body includes a first shell and a first terminal block arranged in the first shell, and the second circuit breaker body includes a second shell and a second terminal block arranged in the second shell; the first shell and the second shell are detachably connected through the plug-in structure, and the first terminal block and the second terminal block are electrically connected through the plug-in structure.

2. The pluggable intelligent IoT circuit breaker according to claim 1, characterized in that: The plug-in structure includes at least one set of matching springs and sockets; The elastic sheet is provided on the second housing and has a fixed end and a free end, the fixed end is connected to the second housing, and the free end has a locking portion formed by at least one protrusion or groove; The socket is embedded in the first housing and has a channel for the free end of the elastic sheet to be inserted into, and a locking groove or a protrusion located inside the channel and corresponding to the locking portion.

3. The pluggable intelligent IoT circuit breaker according to claim 2, characterized in that: The spring piece and the socket are both conductive bodies, and the socket is electrically connected to the first wiring board in the first shell, and the spring piece is electrically connected to the second wiring board in the second shell.

4. The pluggable intelligent IoT circuit breaker according to claim 3, characterized in that: The socket is a copper socket, and the spring is a spring steel sheet.

5. The pluggable intelligent IoT circuit breaker according to claim 1, characterized in that: The first circuit breaker body further comprises a handle, wherein the rotation center of the handle is provided with a main shaft hole; The opening and closing control device includes a third housing, and a control module, a motor, a transmission mechanism, a sector gear and an output main shaft arranged in the third housing; The motor is in transmission cooperation with the transmission mechanism, and the transmission mechanism is in transmission cooperation with the sector gear. One end of the output main shaft is fixedly arranged at the center of the sector gear, and the other end extends out of the third housing and is inserted into the main shaft hole of the handle; the control module is used to control the motor to drive the transmission mechanism to drive the sector gear to rotate, and the sector gear drives the output main shaft to rotate, so that the handle rotates to the closing position or the opening position, thereby realizing remote opening and closing operations.

6. The pluggable intelligent IoT circuit breaker according to claim 5, characterized in that: The transmission mechanism includes a worm, a turbine and a transmission gear; The worm is connected to the output shaft of the motor, and the motor is used to drive the worm to rotate clockwise or counterclockwise. The worm is engaged with the turbine, the turbine is engaged with the transmission gear, and the transmission gear is engaged with the sector gear.

7. The pluggable intelligent IoT circuit breaker according to claim 5, characterized in that: The first circuit breaker body further includes an operating mechanism for mechanically opening and closing the handle, the operating mechanism including a first working state and a second working state. When the operating mechanism is in the first working state, the handle is in the closed position, and when the operating mechanism is in the second working state, the handle is in the open position. The opening and closing control device further includes a tripping mechanism and a tripping shaft, wherein the tripping mechanism is disposed in the third housing and is connected to the control module, and one end of the tripping shaft is movably disposed in the third housing, and the other end extends out of the third housing and is connected to the operating mechanism; The control module is used to control the tripping mechanism to drive the tripping shaft to move so that the tripping shaft is located in the first position or the second position; when the tripping shaft is located in the first position, the operating mechanism is in the first working state; when the tripping shaft is located in the second position, the operating mechanism is in the second working state.

8. The pluggable intelligent IoT circuit breaker according to claim 7, characterized in that: The tripping mechanism includes a leakage tripper and a tripping lever, and the leakage tripper is connected to the control module; The control module is used to control the leakage release to drive the trip lever to move the trip shaft from the first position to the second position.

9. The pluggable intelligent IoT circuit breaker according to claim 5, characterized in that: The third shell is fixed to the first shell by riveting.

10. The pluggable intelligent IoT circuit breaker according to claim 1, characterized in that: The second circuit breaker body further includes a measuring device disposed in the second housing, and the measuring device includes at least one of a metering transformer, a leakage transformer, a zero-sequence transformer, and a temperature controller.