Novel intelligent circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a novel intelligent circuit breaker, which comprises a circuit breaker, a switch structure, a main control chip, a detection module, a communication module, a control module, a display screen and a power supply module, the switch structure comprises a shell, a metal sheet with ferromagnetism, an electromagnet, a sliding block with ferromagnetism and a connecting rod made of an insulator material, the electromagnet controls the sliding block to slide, and the sliding block drives the metal sheet to complete switching-on and switching-off operation through the connecting rod; the control module comprises a switching circuit and a mistaken touch prevention circuit, and the switching circuit energizes the electromagnet so as to control the sliding block to slide; after the mistaken touch prevention circuit is opened, the switching circuit cannot receive a power signal, so that the closing loop of the circuit breaker cannot be switched on. According to the utility model, the technical problem that a maintainer mistakenly touches the closing switch of the circuit breaker during circuit maintenance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, and in particular to a novel intelligent circuit breaker. Background Art

[0002] Circuit breakers are an indispensable and important equipment in low-voltage distribution network systems. They have the function of opening and closing circuits, and can effectively prevent safety accidents caused by circuit short circuits or overloads of electrical equipment. With the development of technology, existing smart circuit breakers have corresponding communication and metering functions. The patent name that has been disclosed is "A metering-type intelligent circuit breaker based on the Internet of Things" and the Chinese utility model patent with the announcement number CN210835064U. The patent includes a CPU module, a signal acquisition module, a metering module, a power module, a mechanical control module, a communication module and an input / output module. The utility model adopts electronic control and integrates protection, metering, and Internet of Things communication functions, which can better control and protect the circuit breaker and make the circuit breaker intelligent. However, the utility model focuses on signal acquisition and communication, and does not take into account the situation where maintenance personnel accidentally touch the circuit breaker closing switch when repairing the circuit. Utility Model Content

[0003] The purpose of the present application is to provide a new type of intelligent circuit breaker, which solves the technical problem of maintenance personnel accidentally touching the circuit breaker closing switch when repairing the circuit.

[0004] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0005] The utility model provides a novel intelligent circuit breaker, comprising a circuit breaker, a main control chip, a detection module, and a communication module. The main control chip, the detection module, and the communication module are all arranged inside the circuit breaker, and the main control chip is connected to the detection module and the communication module respectively. The utility model is characterized in that: it also includes a switch structure and a control module, the switch structure includes a shell, a metal sheet with ferromagnetism, an electromagnet, a slider with ferromagnetism, and a connecting rod composed of an insulating material. Contacts are arranged at both ends of a side of the metal sheet close to the closing circuit, and the contacts can be connected to the closing circuit; a side of the metal sheet away from the closing circuit is connected to one end of the connecting rod, and the other end of the connecting rod passes through the shell and is connected to the slider. Two groups of electromagnets are respectively arranged at two ends inside the shell, and the slider is slidably connected inside the shell and is located between the two groups of electromagnets; the control module includes an anti-false touch circuit and a switch circuit, the anti-false touch circuit is connected to the main control chip, the main control chip sends a control signal to the anti-false touch circuit, and after the anti-false touch circuit is turned on, a control signal is sent to the switch circuit connected thereto, and the switch circuit is also connected to the main control chip;

[0006] The anti-false touch circuit includes a self-locking circuit, a self-locking opening circuit, and a self-locking disconnecting circuit. The self-locking opening circuit is connected to the main control chip. When the self-locking opening circuit receives a control signal sent by the main control chip, or a key in the self-locking opening circuit is pressed, the self-locking opening circuit transmits a control signal to the self-locking circuit connected thereto, and the self-locking circuit is turned on to turn on the anti-false touch function; the self-locking disconnecting circuit is connected to the main control chip. When the self-locking disconnecting circuit receives a control signal sent by the main control chip, or a key in the self-locking disconnecting circuit is pressed, the self-locking disconnecting circuit transmits a control signal to the self-locking circuit connected thereto, and the self-locking circuit is disconnected to release the anti-false touch function;

[0007] The switch circuit includes a start circuit and a close circuit. The close circuit is connected to the main control chip. When the close circuit receives a control signal sent by the main control chip or a button in the close circuit is pressed, the close circuit is turned on, and the electromagnet in the close circuit attracts the slider to complete the closing operation; the start circuit is connected to the main control chip. When the start circuit receives a control signal sent by the main control chip or a button in the start circuit is pressed, the start circuit is turned on, and the electromagnet in the start circuit attracts the slider to complete the opening operation.

[0008] In some embodiments, the anti-mistake-touch circuit also includes a maintenance light circuit, and the maintenance light circuit is connected to the self-locking circuit.

[0009] In some embodiments, a diode is provided in the self-locking circuit to control the unidirectional flow of current.

[0010] In some embodiments, the self-locking disconnect circuit is connected to a NOT gate, and a control signal of the self-locking disconnect circuit is transmitted to the self-locking circuit connected to the NOT gate through the NOT gate.

[0011] In some embodiments, the switching circuit also includes a trigger circuit, which is connected to the anti-mistouch circuit. When the anti-mistouch circuit is closed, the trigger circuit is disconnected and the power signal is cut off. The power signal cannot be transmitted to the start-up circuit and the shutdown circuit connected to the trigger circuit.

[0012] In some embodiments, the shutdown circuit in the switch circuit is connected to a relay. After the shutdown circuit is turned on, the relay is closed to cut off the power supply signal from being transmitted to the start circuit connected to the relay.

[0013] In some embodiments, a display screen is also included, and the display screen is connected to the main control chip.

[0014] In some embodiments, it is characterized in that it also includes a power module, which is respectively connected to the main control chip, the detection module, the communication module, and the control module.

[0015] The technical solution of the present application has at least the following advantages and beneficial effects:

[0016] 1. The utility model redesigns an electromagnetic closing switch of a circuit breaker, which controls the position of a metal sheet by energizing an electromagnet, thereby achieving the purpose of closing and opening the circuit breaker; the conduction of the closing circuit in the switch circuit takes precedence over the starting circuit, and when the starting circuit and the closing circuit are turned on at the same time, the closing circuit takes effect first to prevent potential dangers.

[0017] 2. The utility model The utility model is provided with an anti-accidental touch circuit. After the anti-accidental touch circuit is turned on, the start circuit and the close circuit in the switch circuit cannot receive the power signal, so that the closing circuit of the circuit breaker cannot be connected; when the staff repairs the circuit, the anti-accidental touch circuit can be turned on by a button or a mobile phone; after the repair is completed, the anti-accidental touch circuit can also be turned off by a button or a mobile phone; the circuit structure of this utility model is compact and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the switch circuit of the utility model;

[0019] Figure 2 It is an overall schematic diagram of the anti-mistouch circuit of the utility model;

[0020] Figure 3 This is a schematic diagram of the switch structure of the utility model in the on state;

[0021] Figure 4 This is a schematic diagram of the switch structure of the utility model in a disconnected state;

[0022] In the figure: 1-metal sheet, 2-electromagnet, 3-slider, 4-contact, 5-connecting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Example 1

[0026] Please refer to Figure 1-Figure 4 The utility model provides a new type of intelligent circuit breaker, which is the same as the prior art, including a detection module, a power module, a main control chip, a display screen, and a communication module. The detection module is used to detect the voltage and current in the circuit in real time, and transmit the detected voltage and current to the main control chip connected thereto. The main control chip processes the data and transmits it to the display screen connected to the main control chip. The display screen displays the voltage and current values ​​in the circuit in real time; when the voltage and current are abnormal, the circuit breaker is opened, and the main control chip sends an alarm message to the maintenance personnel through the communication module connected thereto; the maintenance personnel can also use a mobile phone to send instructions to the main control chip through the communication module to complete the related operations of closing, opening, turning on the anti-accidental touch function, and turning off the anti-accidental touch function; the power module is used to power the detection module, the main control chip, the display screen, and the communication module.

[0027] The detection module, power module, main control chip, display screen and communication module in the utility model all belong to the prior art and will not be described in detail here.

[0028] Different from the prior art, the utility model also includes a switch structure and a control module.

[0029] The switch structure includes a housing, a ferromagnetic metal sheet 1, an electromagnet 2, a ferromagnetic slider 3, and a connecting rod 5 made of an insulating material. Contacts 4 are provided at both ends of the side of the metal sheet 1 close to the closing circuit, and the contacts 4 can be connected to the closing circuit to make the closing circuit conductive; the side of the metal sheet 1 away from the closing circuit is connected to one end of the connecting rod 5, and the other end of the connecting rod 5 passes through the housing and connects to the slider 3. Two groups of electromagnets 2 are respectively provided at both ends inside the housing, and the slider 3 is slidably connected inside the housing and located between the two groups of electromagnets 2; the electromagnet 2 is energized to attract the slider 3 to approach, thereby controlling the slider 3 to move in the housing; the slider 3 can control the movement of the metal sheet 1 through the connecting rod 5, thereby controlling the closing and opening operations. For the convenience of description, the electromagnet 2 required for closing is called the first group of electromagnets, and the electromagnet 2 required for opening is called the second group of electromagnets.

[0030] In the utility model, the metal material selected for the metal sheet 1 is iron, and the material selected for the connecting rod 5 is ceramic.

[0031] As an optional implementation, the metal material of the metal sheet 1 may also be any one of cobalt and nickel, and the material of the connecting rod 5 may also be any one of plastic and glass.

[0032] The control module includes an anti-accidental touch circuit and a switch circuit. The anti-accidental touch circuit is connected to the main control chip. When the anti-accidental touch circuit receives a control signal sent by the main control chip, or the on button in the anti-accidental touch circuit is pressed, the anti-accidental touch circuit is turned on and sends a control signal to the switch circuit connected thereto. The power signal in the switch circuit is cut off, and the inspection light is on at this time. When the anti-accidental touch circuit receives a control signal sent by the main control chip, or the disconnect button in the anti-accidental touch circuit is pressed, the anti-accidental touch circuit is disconnected, the power signal in the switch circuit is restored, and the inspection light is off at this time.

[0033] The switch circuit is also connected to the main control chip. The main control chip transmits a control signal to the switch circuit. The switch circuit energizes the electromagnet 2 according to the received signal, so that the electromagnet 2 generates an attractive force, attracting the slider 3 to approach, thereby performing the closing and opening operations. In the case where the power signal is not cut off, when the switch circuit receives the control signal sent by the main control chip, or after the start button in the switch circuit is pressed, the first group of electromagnets are energized, the second group of electromagnets are not energized, and the slider 3 in the switch structure is attracted by the energized electromagnet 2 and approaches one end of the energized electromagnet 2, thereby completing the closing operation; when the switch circuit receives the control signal sent by the main control chip, or after the close button in the switch circuit is pressed, the second group of electromagnets are energized, the first group of electromagnets are not energized, and the slider 3 in the switch structure is attracted by the energized electromagnet 2 and approaches one end of the energized electromagnet 2, thereby completing the opening operation.

[0034] The anti-mistaken touch circuit includes a self-locking opening circuit, a self-locking disconnecting circuit, a self-locking circuit, and a maintenance light circuit.

[0035] The self-locking opening circuit is connected to the main control chip. When the self-locking opening circuit receives the control signal sent by the main control chip, or the opening button in the self-locking opening circuit is pressed, the self-locking opening circuit transmits the control signal to the self-locking circuit connected to it, and the self-locking circuit is turned on to turn on the anti-false touch function. The power signal in the switch circuit connected to the self-locking circuit is cut off, and the maintenance light circuit connected to the self-locking circuit is turned on, and the maintenance light is on; the self-locking disconnecting circuit is connected to the main control chip. When the self-locking disconnecting circuit receives the control signal sent by the main control chip, or the disconnecting button in the self-locking disconnecting circuit is pressed, the self-locking disconnecting circuit transmits the control signal to the self-locking circuit connected to it, and the self-locking circuit is disconnected to release the anti-false touch function.

[0036] Furthermore, the self-locking circuit includes a relay L1, an AND gate U1, a resistor R3, a transistor Q2, and a diode D2. Pin 5 of the relay L1 is connected to a power supply, pin 4 is grounded, and pin 3 is set as an output terminal. For the convenience of description, this output terminal is called the Ua terminal, and the Ua terminal is connected to the switch circuit; pin 2 of the relay L1 is connected to pin 2 of the AND gate U1, pin 1 of the AND gate U1 is connected to the self-locking disconnection circuit, pin 3 of the AND gate U1 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to the power supply, the emitter of the transistor Q2 is connected to the positive pole of the diode D2, and the inspection light circuit is connected to this connecting wire; the cathode of the diode D2 is connected to pin 1 of the relay L1, and the self-locking opening circuit is connected to this connecting wire;

[0037] The self-locking opening circuit includes transistor Q3, resistor R1, button SW1, and diode D3. The base of transistor Q3 is connected to the PA3 pin of the main control chip, the collector of transistor Q3 is connected to one end of button SW1 and connected to the power supply, and the emitter of transistor Q3 is connected to one end of resistor R1; the other end of button SW1 is connected to the positive electrode of diode D3, the negative electrode of diode D3 is connected to the other end of resistor R1, and is connected to the wire connecting diode D2 and pin 1 of relay L1 in the self-locking circuit;

[0038] The self-locking disconnection circuit includes a transistor Q1, a resistor R2, a button SW2, a diode D1, and a NOT gate U2. The base of the transistor Q1 is connected to the PA4 pin of the main control chip, the collector of the transistor Q1 is connected to one end of the button SW1 and connected to the power supply, and the emitter of the transistor Q1 is connected to one end of the resistor R2; the other end of the button SW2 is connected to the positive electrode of the diode D1, the negative electrode of the diode D1, the other end of the resistor R2, and the input end of the NOT gate U2 are connected, and the output end of the NOT gate U2 is connected to the pin 1 of the AND gate U1 in the self-locking circuit;

[0039] The inspection light circuit includes an inspection light LED1 and a resistor R4. The cathode of the inspection light LED1 is grounded, the anode is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the wire connecting the emitter of the transistor Q2 in the self-locking circuit and the anode of the diode D2.

[0040] The switch circuit includes a start circuit, a close circuit, and a trigger circuit. The trigger circuit is connected to the anti-false touch circuit. When the trigger circuit receives a signal from the anti-false touch circuit, the trigger circuit cuts off the power signal, and the start circuit and the close circuit cannot be powered on; the start circuit is connected to the main control chip. When the power signal is not cut off, when the start circuit receives a control signal sent by the main control chip, or when the start button in the start circuit is pressed, the start circuit is turned on, and the first group of electromagnets in the start circuit are powered on; the close circuit is connected to the main control chip. When the power signal is not cut off, when the close circuit receives a control signal sent by the main control chip, or when the close button in the close circuit is pressed, the close circuit is turned on, and the second group of electromagnets in the close circuit are powered on; the close circuit takes precedence over the start circuit. When the close circuit is turned on, the start circuit is cut off and the closing operation cannot be performed.

[0041] Furthermore, the startup circuit includes transistors Q7, Q9, button SW4, resistors R9, R10, diode D5, and electromagnet U4, where electromagnet U4 refers to the first group of electromagnets. The base of transistor Q7 is connected to the PA1 pin of the main control chip, the collector of transistor Q7 is connected to one end of button SW4 and connected to the power supply, and the emitter of transistor Q7 is connected to one end of resistor R9; the other end of button SW4 is connected to the positive electrode of diode D5, the negative electrode of diode D5, the other end of resistor R9, and one end of resistor R10 are connected, the other end of resistor R10 is connected to the base of transistor Q9, the collector of transistor Q9 is connected to the trigger circuit, the emitter of transistor Q9 is connected to one end of electromagnet U4, and the other end of electromagnet U4 is grounded;

[0042] The closing circuit includes transistors Q4, Q6, button SW3, resistors R6, R7, diode D4, and electromagnet U3, where electromagnet U3 refers to the second group of electromagnets. The base of transistor Q4 is connected to the PA2 pin of the main control chip, the collector of transistor Q4 is connected to one end of button SW3 and connected to the power supply, and the emitter of transistor Q4 is connected to one end of resistor R6; the other end of button SW3 is connected to the positive electrode of diode D4, the negative electrode of diode D4, the other end of resistor R6, and one end of resistor R7 are connected, the other end of resistor R7 is connected to the base of transistor Q6, the collector of transistor Q6 is connected to the trigger circuit, the emitter of transistor Q6 is connected to one end of electromagnet U3, and the trigger circuit is connected to this connecting wire, and the other end of electromagnet U4 is grounded;

[0043] The trigger circuit includes transistors Q5 and Q8, relay L2, and resistors R5 and R8. One end of resistor R5 is set as an input end, and for the convenience of description, this input end is called Ub end; the other end of resistor R5 is connected to the base of transistor Q5, the collector of transistor Q5 is connected to the power supply, the emitter of transistor Q5 is connected to pin 3 of relay L2, and the collector of transistor Q6 in the start-up circuit is connected to this connecting wire; pin 5 of relay L2 is connected to the collector of transistor Q9 in the shutdown circuit; pin 1 of relay L2 is connected to the emitter of transistor Q8, the collector of transistor Q8 is connected to the power supply, the base of transistor Q8 is connected to one end of resistor R8, and the other end of resistor R8 is connected to the wire connecting the emitter of transistor Q6 in the start-up circuit and electromagnet U3; pin 4 of relay L2 is grounded.

[0044] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution of the present invention, and the scope of the present invention is defined by the attached claims.

Claims

1. A new type of intelligent circuit breaker, including a circuit breaker, a main control chip, a detection module, and a communication module. The main control chip, the detection module, and the communication module are all arranged inside the circuit breaker, and the main control chip is connected to the detection module and the communication module respectively, characterized in that: It also includes a switch structure and a control module, wherein the switch structure includes a housing, a metal sheet (1) with ferromagnetism, an electromagnet (2), a slider (3) with ferromagnetism, and a connecting rod (5) made of an insulating material, wherein the two ends of the metal sheet (1) close to the closing circuit are provided with contacts (4), and the contacts (4) can be connected to the closing circuit; the side of the metal sheet (1) away from the closing circuit is connected to one end of the connecting rod (5), and the other end of the connecting rod (5) passes through the housing and is connected to the slider (3), and two groups of electromagnets (2) are respectively arranged at two ends inside the housing, and the slider (3) is slidably connected inside the housing and is located between the two groups of electromagnets (2); the control module includes an anti-false touch circuit and a switch circuit, wherein the anti-false touch circuit is connected to a main control chip, and the main control chip sends a control signal to the anti-false touch circuit, and after the anti-false touch circuit is turned on, a control signal is sent to the switch circuit connected thereto, and the switch circuit is also connected to the main control chip; The anti-mistaken touch circuit includes a self-locking circuit, a self-locking opening circuit, and a self-locking disconnecting circuit. The self-locking opening circuit is connected to the main control chip. When the self-locking opening circuit receives a control signal sent by the main control chip, or a key in the self-locking opening circuit is pressed, the self-locking opening circuit transmits a control signal to the self-locking circuit connected thereto, and the self-locking circuit is turned on to turn on the anti-mistaken touch function. The self-locking disconnection circuit is connected to the main control chip. When the self-locking disconnection circuit receives a control signal sent by the main control chip, or a key in the self-locking disconnection circuit is pressed, the self-locking disconnection circuit transmits a control signal to the self-locking circuit connected thereto, and the self-locking circuit is disconnected, thereby releasing the anti-mistouch function. The switch circuit comprises a start circuit and a close circuit, wherein the close circuit is connected to a main control chip, and when the close circuit receives a control signal sent by the main control chip or a key in the close circuit is pressed, the close circuit is turned on, and the electromagnet (2) in the close circuit attracts the slider (3), completing the closing operation; the start circuit is connected to the main control chip, and when the start circuit receives a control signal sent by the main control chip or a key in the start circuit is pressed, the start circuit is turned on, and the electromagnet (2) in the start circuit attracts the slider (3), completing the opening operation.

2. A novel intelligent circuit breaker according to claim 1, characterized in that: The anti-mistake-touch circuit also includes a maintenance light circuit, which is connected to the self-locking circuit.

3. A novel intelligent circuit breaker according to claim 2, characterized in that: The self-locking circuit is provided with a diode for controlling the current to flow in one direction.

4. A novel intelligent circuit breaker according to claim 2, characterized in that: The self-locking disconnection circuit is connected to the NOT gate, and a control signal of the self-locking disconnection circuit is transmitted to the self-locking circuit connected to the NOT gate through the NOT gate.

5. A novel intelligent circuit breaker according to claim 1, characterized in that: The switch circuit also includes a trigger circuit, which is connected to the anti-accidental touch circuit. When the anti-accidental touch circuit is closed, the trigger circuit is disconnected and the power signal is cut off. The power signal cannot be transmitted to the start-up circuit and the shutdown circuit connected to the trigger circuit.

6. A novel intelligent circuit breaker according to claim 5, characterized in that: The closing circuit in the switch circuit is connected to a relay. After the closing circuit is turned on, the relay is closed, and the power supply signal is cut off from being transmitted to the starting circuit connected to the relay.

7. A novel intelligent circuit breaker according to claim 1, characterized in that: It also includes a display screen, which is connected to the main control chip.

8. A novel intelligent circuit breaker according to claim 7, characterized in that: It also includes a power module, which is connected to the main control chip, the detection module, the communication module, and the control module respectively.

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