CN220585100U - Circuit breaker control circuit and circuit breaker - Google Patents
Circuit breaker control circuit and circuit breaker Download PDFInfo
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- CN220585100U CN220585100U CN202322001951.8U CN202322001951U CN220585100U CN 220585100 U CN220585100 U CN 220585100U CN 202322001951 U CN202322001951 U CN 202322001951U CN 220585100 U CN220585100 U CN 220585100U
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Abstract
The application provides a control circuit and circuit breaker of circuit breaker, intelligent circuit breaker in the intelligent circuit breaker system includes the control circuit of control circuit breaker body, this control circuit includes motor execution unit, master control unit and energy storage unit, master control unit is through output control signal to motor execution unit, motor execution unit drives the actuating mechanism of circuit breaker body and carries out the operation of closing a floodgate or separating brake, wherein, utilize the energy storage unit alone to last the main control unit power supply of power consumption, the electric energy that the master control unit consumed can not lead to the charging information increase that shows on the electric energy meter, avoid causing the user to lead to the worry of extra electric energy meter charging to intelligent circuit breaker, user experience has been improved.
Description
Technical Field
The application relates to the technical field of circuit breakers, in particular to a control circuit of a circuit breaker and the circuit breaker.
Background
A circuit breaker is a current switching device capable of opening and closing normal and abnormal loops, which can be used to turn on and off a load circuit, and has become an indispensable and very important protective appliance in a power distribution network. The traditional circuit breaker has defects and shortages, and cannot meet the development requirement of an intelligent power distribution network.
Compared with the traditional circuit breaker, the intelligent circuit breaker has the functions of setting the parameters such as overload long delay, short circuit short delay, instantaneous action protection, single-phase grounding protection, load monitoring protection and the like, and has the measurement display function.
At present, an external circuit breaker scheme of the intelligent electric energy meter is mostly adopted in the intelligent circuit breaker, which is a key for realizing a remote cost control function by matching with the electric energy meter of the internet of things and is also an important ring for pushing operation management digital transformation. In the scheme, the intelligent degree of the external circuit breaker of the electric energy meter is improved, the functional modules are increased, and the power consumption of the circuit breaker is correspondingly increased. The external circuit breaker of current electric energy meter directly gets the electricity from the electric wire netting, and the control circuit of circuit breaker lasts the electricity and can lead to the charging increase on the electric energy meter, will also lead to the last charging on the electric energy meter even under the condition that the circuit breaker breaks the floodgate to the user discovers that charging increase can lead to user's experience relatively poor.
Disclosure of Invention
An object of the application is to provide a control circuit and circuit breaker of circuit breaker for solve the external circuit breaker of electric energy meter and directly get the electricity from the electric wire netting, the control circuit of circuit breaker lasts the electricity and can lead to the charging increase on the electric energy meter, even will also lead to the problem of last charging on the electric energy meter under the condition that the circuit breaker breaks the floodgate.
The application provides a control circuit of circuit breaker, include: the device comprises a motor execution unit, a main control unit and an energy storage unit;
the motor execution unit is in signal connection with the main control unit, and the energy storage unit is electrically connected with the main control unit;
the energy storage unit is used for supplying power to the main control unit, the main control unit is used for outputting a control signal to the motor execution unit, and the control signal is used for indicating the motor execution unit to drive the execution mechanism of the breaker body to conduct switching-on or switching-off operation.
Among the above-mentioned technical scheme, intelligent circuit breaker in the intelligent circuit breaker system includes the control circuit of control circuit breaker body, this control circuit includes motor execution unit, master control unit and energy storage unit, master control unit is through output control signal to motor execution unit, motor execution unit drives the actuating mechanism of circuit breaker body and carries out the operation of closing or separating brake, wherein, utilize the energy storage unit alone to supply power for the master control unit who lasts the power consumption, the electric energy that master control unit consumed can not lead to the charging information increase that shows on the electric energy meter, avoid arousing the user to lead to the worry of extra electric energy meter charging to intelligent circuit breaker, user experience has been improved.
In some alternative embodiments, further comprising:
the power input end of the self-electricity-taking unit is connected with the wire inlet end or the wire outlet end of the breaker body, and the power output end of the self-electricity-taking unit is respectively connected with the energy storage unit and the main control unit;
the self-electricity-taking unit is used for supplying power to the main control unit and charging the energy storage unit when the breaker is switched on.
In the technical scheme, the control circuit of the circuit breaker further comprises a self-power-taking unit, wherein the power input end of the self-power-taking unit is connected to the power line, the power output end of the self-power-taking unit is simultaneously connected with the energy storage unit and the main control unit, and when the circuit breaker is closed, the self-power-taking unit takes power from the power line, supplies power to the main control unit and charges the energy storage unit; when the breaker is opened, the self-power-taking unit cannot take power from the power line, and at the moment, the energy storage unit is only used for supplying power to the main control unit, so that even under the condition of opening the gate, the electric energy consumed by the main control unit cannot cause the charging information displayed on the electric energy meter to be increased.
The self-power-taking unit can specifically adopt a current transformer, converts a main loop current signal at the power line side into a secondary side current signal and outputs the secondary side current signal according to the electromagnetic induction principle of the current transformer, and the current transformer is arranged in the circuit breaker body and is connected with the wire inlet end or the wire outlet end of the circuit breaker body. When the main loop does not have current (the breaker is disconnected) or small current, the energy storage unit supplies power to the main control unit, and when the main loop current reaches the power supply threshold current, the self-power-taking unit supplies power to the main control unit and charges the energy storage unit.
In some alternative embodiments, further comprising:
the power supply positive end of the networking identification unit is connected with the live wire inlet end of the breaker body, and the power supply negative end of the networking identification unit is connected with the zero wire inlet end of the breaker body; the networking identification unit is used for sending characteristic information to the electric energy meter through a power line when the circuit breaker is electrified to self-networking for the first time; the characteristic information is used for identifying, pairing and binding the circuit breaker by the electric energy meter.
In the technical scheme, the networking identification unit is in a conditional response and the working duration is a short process, and is not required to be in a working state all the time, so that the networking identification unit is used for being connected to a power line, and the networking identification unit takes electricity from the power line. And when the circuit breaker is electrified to self-networking for the first time, the networking identification unit sends the characteristic information of the circuit breaker to the electric energy meter through the power line. The characteristic information can be stored in the memory of the networking identification unit in advance or stored in the memory of the main control unit, and the main control unit sends the characteristic information to the networking identification unit and then sends the characteristic information to the electric energy meter through the networking identification unit.
In some alternative embodiments, further comprising: an electromagnetic interference module;
one end of the electromagnetic interference module is connected with the positive end of the power supply of the networking identification unit, and the other end of the electromagnetic interference module is connected with the negative end of the power supply of the networking identification unit.
According to the technical scheme, the networking identification unit sends the characteristic information to the electric energy meter through the power line, and the electromagnetic interference module (EMI module) is arranged between the networking identification unit and the electric energy meter, so that the interference of electromagnetic waves generated by the control circuit in the working process on the electric energy meter is reduced, and the influence on the characteristic information of the electric energy meter for receiving modulation transmission is reduced.
In some alternative embodiments, the master control unit includes:
a wireless transmission module and a control module; the wireless transmission module is connected with the control module, and the control module is connected with the motor execution unit;
the wireless transmission module is used for carrying out data interaction between the electric energy meter and the circuit breaker after the electric energy meter and the circuit breaker are paired;
the control module is used for receiving the external instruction through the wireless transmission module and outputting a corresponding control signal according to the external instruction; the control signal includes a signal for indicating closing, or a signal for indicating opening, or a signal for indicating allowing closing.
In the above technical scheme, the main control unit comprises a wireless transmission module and a control module, after the electric energy meter and the circuit breaker are paired, the wireless transmission module is used for carrying out data interaction of the electric energy meter and the circuit breaker, so that remote fee control is realized, for example: the method comprises the steps that when a user corresponding to the circuit breaker is under-charged in the electric energy meter, the electric energy meter sends a brake-separating instruction to the control module through the wireless transmission module, and the control module sends a brake-separating instruction signal to the motor execution unit, so that the motor execution unit drives an execution structure of the circuit breaker body to realize brake-separating operation; and displaying that a user corresponding to the circuit breaker is switched from arrearage to residual quota as positive in the electric energy meter, sending a closing instruction to the control module by the electric energy meter through the wireless transmission module, and sending a signal for indicating closing or allowing closing to the motor execution unit by the control module.
In some alternative embodiments, the master control unit further comprises:
the micro-scanning module is connected with the control module and used for acquiring the key position information of the circuit breaker and sending the key position information to the control module; the key position information is used for indicating the state of the circuit breaker and the mode of the circuit breaker; the state of the circuit breaker comprises a closing position inching state, an initial position inching state, a tripping position inching state and a handle inching state; the modes of the circuit breaker comprise an automatic closing mode and a manual closing mode.
In the above technical scheme, the main control unit further comprises a micro-scanning module, wherein the micro-scanning module is used for acquiring key position information of the circuit breaker, such as position information of a mode switching key of the circuit breaker, position information of a handle used for realizing switching on and switching off of the circuit breaker, and the like, sending different state/mode indication signals to the control module according to different position information, and the control module acquiring the current state and the current mode of the circuit breaker in real time according to the different state/mode indication signals.
In some alternative embodiments, the master control unit further comprises:
the indication module is connected with the control module and is used for receiving an indication signal of the control module and carrying out acousto-optic indication based on the indication signal; the indication signal is used to indicate the state and/or mode of the circuit breaker.
In the above technical scheme, the main control unit further comprises an indication module, wherein the indication module can further comprise an LED lamp, a buzzer, an LCD display screen and the like, and the control module is used for carrying out corresponding indication on site through the indication module after acquiring the current state and the current mode of the circuit breaker so as to inform field operators or users of the current state and the current mode of the circuit breaker.
In some alternative embodiments, the positive power terminal of the motor execution unit is adapted to be connected to the live wire inlet terminal of the circuit breaker body, and the negative power terminal of the motor execution unit is adapted to be connected to the neutral wire inlet terminal of the circuit breaker body.
In the above technical solution, the motor execution unit is a conditional response and the operation duration is a short process, and is not required to be in an operation state all the time, so the motor execution unit is used for being connected to a power line, and the motor execution unit takes power from the power line.
In some alternative embodiments, the motor execution unit includes: the power supply conversion circuit, the motor driving circuit and the motor;
the input end of the power supply conversion circuit is used for inputting an external alternating current power supply, the output end of the power supply conversion circuit is connected with the power supply input end of the motor driving circuit, the control signal input end of the motor driving circuit is connected with the main control unit, the output end of the motor driving circuit is connected with the motor, and the motor is connected with the circuit breaker body.
In the above technical scheme, the motor execution unit comprises a power supply conversion circuit, a motor driving circuit and a motor, an external alternating current power supply from a power line is converted into direct current voltage through the power supply conversion circuit and stores energy for the motor, after the main control unit receives a fee control command of the electric energy meter, the main control unit sends a control signal to the motor driving circuit, and the motor driving circuit receives the control signal and outputs a corresponding action signal to the motor. The motor driving circuit is used for controlling forward and reverse rotation of the motor, forward and reverse voltages are needed to be provided for the motor, and four-way switches can be used for controlling voltages of two input ends of the motor.
The application provides a circuit breaker, include: a circuit breaker body and a control circuit as in any of the above;
the incoming line end of the breaker body is used for connecting a power line, and the outgoing line end of the breaker body is used for connecting load equipment;
the motor executing unit of the control circuit drives the executing mechanism of the breaker body to realize the operation of closing or opening.
Among the above-mentioned technical scheme, intelligent circuit breaker among the intelligent circuit breaker system includes the circuit breaker body and the control circuit of control circuit breaker body, between circuit breaker body coupling power line and the load, control circuit includes motor execution unit, master control unit and energy storage unit, master control unit is through output control signal to motor execution unit, motor execution unit drives the actuating mechanism of circuit breaker body and carries out the operation of closing or breaking brake, wherein, utilize the energy storage unit alone to give the master control unit power supply that lasts the power consumption, the electric energy that master control unit consumed can not lead to the charging information increase that shows on the electric energy meter, avoid causing the user to lead to the worry of extra electric energy meter charging to intelligent circuit breaker, user experience has been improved.
The present application also provides a circuit breaker system comprising: the electric energy meter and at least one circuit breaker, wherein, the circuit breaker sets up the near-end that is close to the load on the power cord, and the electric energy meter sets up the far-end that is kept away from the load on the power cord. The electric energy meter can be only one, the circuit breakers are multiple, the circuit breakers respectively send respective characteristic information to the electric energy meter through the power lines to conduct identification pairing, and after the pairing, the circuit breakers respectively conduct data interaction with the electric energy meter through respective wireless communication modules, namely, remote fee control on the circuit breakers is achieved through the electric energy meter.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a control circuit of a circuit breaker according to a first embodiment of the present application;
FIG. 2 is a schematic diagram of a control circuit according to a second embodiment of the present disclosure;
fig. 3 is a schematic connection diagram of the electric energy meter and the networking identification unit provided in the embodiment;
fig. 4 is a schematic diagram of a control circuit according to a third embodiment of the present application;
fig. 5 is a schematic connection diagram of functional modules of the self-powered unit according to the present embodiment;
fig. 6 is a circuit configuration diagram of the self-powered unit according to the present embodiment;
fig. 7 is a schematic diagram of a functional module of a master control unit according to an embodiment of the present application;
fig. 8 is a functional block diagram of a motor execution unit according to an embodiment of the present application.
Icon: the power supply device comprises a 1-control circuit, a 11-main control unit, a 12-energy storage unit, a 13-motor execution unit, a 131-power conversion circuit, a 132-motor driving circuit, a 133-motor, a 14-networking identification unit, a 15-self-electricity-taking unit, a 2-circuit breaker body and a 3-electric energy meter.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a control circuit 1 of a circuit breaker according to a first embodiment of the present application, where the control circuit 1 includes: the motor execution unit 13, the main control unit 11 and the energy storage unit 12.
The motor execution unit 13 is in signal connection with the main control unit 11, and the energy storage unit 12 is electrically connected with the main control unit 11; the energy storage unit 12 is used for supplying power to the main control unit 11, the main control unit 11 is used for outputting a control signal to the motor execution unit 13, and the control signal is used for indicating the motor execution unit 13 to drive the execution mechanism of the breaker body 2 to perform switching-on or switching-off operation.
In this embodiment, intelligent circuit breaker in intelligent circuit breaker system includes control circuit 1 of control circuit breaker body 2, this control circuit 1 includes motor execution unit 13, master control unit 11 and energy storage unit 12, master control unit 11 is through output control signal to motor execution unit 13, motor execution unit 13 drive circuit breaker body 2's actuating mechanism carries out the operation of closing or separating brake, wherein, utilize energy storage unit 12 alone to give master control unit 11 power supply, control circuit 1 does not obtain the electric energy through the power line, the electric energy that control circuit 1 consumed can not lead to the charging information increase that shows on the electric energy meter 3, avoid causing the user to lead to the worry of extra electric energy meter charging to intelligent circuit breaker.
In some alternative embodiments, the positive power terminal of the motor execution unit 13 is for connection to the live wire inlet terminal of the circuit breaker body 2, and the negative power terminal of the motor execution unit 13 is for connection to the neutral wire inlet terminal of the circuit breaker body 2. In the embodiment of the present application, the motor execution unit 13 is a conditional response and the operation duration is a short process, and is not required to be in an operating state all the time, so the motor execution unit 13 is used for being connected to a power line, and the motor execution unit 13 takes power from the power line.
Referring to fig. 2, fig. 2 is a schematic diagram of a control circuit 1 according to a second embodiment of the present application, where the control circuit 1 further includes: the networking identification unit 14, the positive end of the power supply of the networking identification unit 14 is connected with the live wire inlet end of the breaker body 2, and the negative end of the power supply of the networking identification unit 14 is connected with the zero wire inlet end of the breaker body 2; the networking identification unit 14 is used for sending characteristic information to the electric energy meter 3 through a power line when the circuit breaker is electrified to self-networking for the first time; the characteristic information is used for identifying, pairing and binding the circuit breaker by the electric energy meter 3.
In the embodiment of the present application, the networking identification unit 14 is a conditional response and the operation duration is a short process, and is not required to be in an operating state all the time, so the networking identification unit 14 is used to connect to a power line, and the networking identification unit 14 takes power from the power line. When the circuit breaker is first powered on to self-network, the network identification unit 14 transmits the characteristic information of the circuit breaker to the electric energy meter 3 through the power line. The feature information may be stored in the memory of the networking identification unit 14 in advance, or may be stored in the memory of the main control unit 11, and the main control unit 11 transmits the feature information to the networking identification unit 14, and then transmits the feature information to the electric energy meter 3 through the networking identification unit 14. And then, the electric energy meter 3 decodes the characteristic information of the power line transmission through the high-precision metering module in the electric energy meter 3, and finally, the correct identification, pairing and binding of the electric energy meter 3 to the circuit breaker are realized.
Referring to fig. 3, fig. 3 is a schematic connection diagram of the electric energy meter 3 and the networking identification unit 14 provided in the present embodiment, where the control circuit 1 further includes: an electromagnetic interference module; the positive power supply end and the negative power supply end of the networking identification unit 14 are also connected with electromagnetic interference modules in parallel. Specifically, the electromagnetic interference module comprises a resistor connected in series on the fire wire and an adjustable resistor connected in parallel between the fire wire and the zero wire.
In this embodiment of the present application, the networking identification unit 14 sends the characteristic information to the electric energy meter 3 through the power line, and an electromagnetic interference module (EMI module) is disposed between the networking identification unit 14 and the electric energy meter 3, so as to reduce interference of electromagnetic waves generated by the control circuit 1 in the working process on the electric energy meter 3, and reduce the influence on the characteristic information of the electric energy meter 3 for receiving modulation transmission.
In this embodiment, the circuit breaker includes two parts, namely a circuit breaker body 2 and a control circuit 1, wherein the circuit breaker body 2 is connected in a main circuit to realize connection and disconnection of the main circuit, and the control circuit 1 includes a main control unit 11, a motor executing unit 13, an energy storage unit 12 and a networking identification unit 14, wherein the power consumption, duration and response conditions of the main control unit 11, the motor executing unit 13 and the networking identification unit 14 are shown in the following table 1.
TABLE 1
It can be seen that, the networking identification unit 14 and the motor execution unit 13 are both conditionally responsive, and the continuous working time is a short process, and the main control unit 11 is always in a continuous working state, so that only the power supply of the main control unit 11 needs to be controlled, that is, the networking identification unit 14 and the motor execution unit 13 take power from the front end group of the main loop, and the energy storage unit 12 mainly supplies power to the main control unit 11.
It should be noted that fig. 2 shows a case where the network identification unit 14 and the motor execution unit 13 take power from the main loop front end group, in which case the network identification unit 14 is directly connected to the power line (live line and neutral line), and the motor execution unit 13 is connected to the network identification unit 14. The network identification unit 14 and the motor execution unit 13 may take power from the main loop front end group: the power end of the networking identification unit 14 is directly connected to the power line, and the power end of the motor execution unit 13 is also directly connected to the power line, namely the networking identification unit 14 and the motor execution unit 13 are respectively provided with an alternating current-direct current power conversion module; alternatively, the power source terminal of the motor execution unit 13 is directly connected to the power line, and the networking identification unit 14 is connected to the motor execution unit 13.
Referring to fig. 4, fig. 4 is a schematic diagram of a control circuit 1 according to a third embodiment of the present application, where the control circuit 1 further includes: the power input end of the self-power-taking unit 15 is connected with the wire inlet end or the wire outlet end of the breaker body 2, and the power output end of the self-power-taking unit 15 is respectively connected with the energy storage unit 12 and the main control unit 11; the self-powered unit 15 is used for supplying power to the main control unit 11 and charging the energy storage unit 12 when the breaker is closed.
In this embodiment, the control circuit 1 of the circuit breaker further includes a self-power-taking unit 15, a power input end of the self-power-taking unit 15 is used for being connected to a power line, a power output end of the self-power-taking unit 15 is simultaneously connected with the energy storage unit 12 and the main control unit 11, and when the circuit breaker is closed, the self-power-taking unit 15 takes power from the power line and supplies power to the main control unit 11 and charges the energy storage unit 12; when the breaker is opened, the self-power-taking unit 15 cannot take power from the power line, and at this time, the main control unit 11 is powered only through the energy storage unit 12.
The self-power-taking unit 15 may specifically adopt a current transformer, converts a main loop current signal at the power line side into a secondary side current signal and outputs the secondary side current signal according to an electromagnetic induction principle of the current transformer, and the current transformer is disposed in the breaker body 2 and is connected with an incoming line end or an outgoing line end of the breaker body 2. The main control unit 11 is supplied with power by the energy storage unit 12 in case the main circuit has no current (breaker open) or a small current, and the main control unit 11 is supplied with power by the self-powered unit 15 and the energy storage unit 12 is charged in case the main circuit current reaches the power supply threshold current.
Specifically, referring to fig. 5, fig. 5 is a schematic diagram illustrating connection of functional modules of the self-powered unit 15 according to the present embodiment. The self-powered unit 15 includes a self-powered transformer (i.e., a current transformer), a rectifying circuit, a bleeder circuit, and a step-down/step-down circuit. The self-powered transformer converts the primary loop current signal into a secondary side current signal and outputs the secondary side current signal to the rectifying circuit. The rectifying circuit is a bridge rectifying circuit, and the secondary side current signal converts alternating current into direct current under the action of the rectifying circuit. The direct current converted by the rectifying circuit passes through the bleeder circuit and then reaches the voltage reducing/stabilizing circuit, and the bleeder circuit comprises a filter capacitor CE1. The output end of the voltage reducing/stabilizing circuit is connected with the energy storage unit 12, the energy storage unit 12 is charged, the energy storage unit 12 adopts a lithium battery of 3.6V, and the output end of the voltage reducing/stabilizing circuit is also connected with the main control unit 11, and the main control unit 11 is supplied with power.
Referring to fig. 6, fig. 6 is a circuit diagram of a self-power-taking unit 15 provided in this embodiment, wherein a secondary side of the self-power-taking transformer is connected to a bridge rectifier circuit B1, a positive output end of the bridge rectifier circuit B1 is connected to a positive end of a first diode D1, a negative end of the first diode D1 is connected to an input end of a buck/voltage-stabilizing circuit, an output end of the buck/voltage-stabilizing circuit U1 is connected to an input end of a second diode D2, an output end of the second diode D2 is connected to an input end of a third diode D3, an output end of the third diode D3 is connected to a main control unit 11, and a negative output end of the bridge rectifier circuit B1 is grounded. The positive output end of the bridge rectifier circuit B1 is further connected with the output end of a fourth diode D4, the input end of the fourth diode D4 is connected with the negative output end of the bridge rectifier circuit B1, the output end of the first diode D1 is further connected with the positive end of a filter capacitor CE1, the negative end of the filter capacitor CE1 is connected with the negative output end of the bridge rectifier circuit B1, the output end of the voltage reducing/stabilizing circuit U1 is further connected with one end of a first capacitor C1, the other end of the first capacitor C1 is connected with the negative output end of the bridge rectifier circuit B1, the output end of a second diode D2 is further connected with the positive end of a lithium battery BAT2, and the negative end of the lithium battery BAT2 is connected with the negative output end of the bridge rectifier circuit B1. In this embodiment, the power supply detection may be performed at the positive end of the lithium battery BAT2, and the detection result may be sent to the main control unit 11, so that when the main control unit 11 determines that the lithium battery voltage is too low, an alarm prompt is performed.
In some alternative embodiments, the main control unit 11 includes: a wireless transmission module and a control module; the wireless transmission module is connected with the control module, and the control module is connected with the motor execution unit 13; the wireless transmission module is used for carrying out data interaction between the electric energy meter 3 and the circuit breaker after the electric energy meter 3 and the circuit breaker are paired; the control module is used for receiving the external instruction through the wireless transmission module and outputting a corresponding control signal according to the external instruction; the control signal includes a signal for indicating closing, or a signal for indicating opening, or a signal for indicating allowing closing.
In this embodiment of the present application, the main control unit 11 includes a wireless transmission module and a control module, after the electric energy meter 3 and the circuit breaker finish pairing, the data interaction between the electric energy meter 3 and the circuit breaker is performed through the wireless transmission module, so as to realize remote fee control, for example: when the electric energy meter 3 displays that the corresponding user of the circuit breaker is under-charged, the electric energy meter 3 sends a brake-separating instruction to the control module through the wireless transmission module, and the control module sends a brake-separating signal to the motor execution unit 13, so that the motor execution unit 13 drives the execution structure of the circuit breaker body 2 to realize brake-separating operation; and when the user corresponding to the circuit breaker is displayed in the electric energy meter 3 and is switched from arrearage to residual quota, the electric energy meter 3 sends a closing instruction to the control module through the wireless transmission module, and the control module sends a signal for indicating closing or allowing closing to the motor execution unit 13.
In some alternative embodiments, the main control unit 11 further includes: the micro-scanning module is connected with the control module and is used for acquiring the key position information of the breaker body 2 and sending the key position information to the control module; the key position information is used for indicating the state of the circuit breaker and the mode of the circuit breaker; the state of the circuit breaker comprises a closing position inching state, an initial position inching state, a tripping position inching state and a handle inching state; the modes of the circuit breaker comprise an automatic closing mode and a manual closing mode.
Wherein, the automatic closing mode is: after the user pays the arrears, the electric energy meter 3 recognizes that the residual amount is positive, and sends a closing signal to the circuit breaker, and the circuit breaker directly completes the closing operation;
the manual closing mode is as follows: after the user pays the arrears, the electric energy meter 3 recognizes that the residual amount is positive, and sends a closing permission signal to the circuit breaker to allow the user to manually close;
the inching state of the closing position represents that the circuit breaker is in a closing state;
the initial inching state represents that the circuit breaker is in a breaking state;
the trip position inching state represents that the circuit breaker is in a brake-separating state, and a handle of the circuit breaker for switching on or switching off is in a switching-on position;
the handle jog state represents a position state of a handle of the circuit breaker for closing or opening the switch.
In this embodiment, the main control unit 11 further includes a micro-scanning module, where the micro-scanning module is configured to obtain key position information of the circuit breaker, for example, position information of a mode switching key of the circuit breaker, position information of a handle for implementing switching on and off of the circuit breaker, and the like, send different status/mode indication signals to the control module according to different position information, and the control module obtains the current status and the current mode of the circuit breaker in real time according to the different status/mode indication signals. Specifically, the micro-scanning module may acquire key position information of the circuit breaker in the following manner: for the button that the circuit breaker is used for switching automatic switch-on mode and manual switch-on mode, the one end ground of this button, the other end of this button is connected to a pin of main control chip, when the button was pressed, draws down this pin level of main control chip, represents manual switch-on mode and switches into automatic switch-on mode. It should be noted that, the key of the breaker may be a matrix keyboard, or a key on the main control chip.
In some alternative embodiments, the main control unit 11 further includes: the indication module is connected with the control module and is used for receiving an indication signal of the control module and carrying out acousto-optic indication based on the indication signal; the indication signal is used to indicate the state and/or mode of the circuit breaker. Specifically, the indication module may include two LED lamps, where the first LED lamp is used to indicate that the current mode is a manual switching-on mode when being turned on, and the second LED lamp is used to indicate that the current mode is an automatic switching-on mode when being turned on.
In this embodiment, the main control unit 11 further includes an indication module, where the indication module may further include an LED lamp, a buzzer, an LCD display screen, etc., and after the control module obtains the current state and the current mode of the circuit breaker, the control module performs corresponding indication on site through the indication module to inform the field operator or the user of the current state and the current mode of the circuit breaker.
In a specific embodiment, please refer to fig. 7, fig. 7 is a schematic diagram of a functional module of the main control unit 11 according to an embodiment of the present application. In this embodiment, the control module of the main control unit 11 adopts a single-chip microcomputer, the wireless transmission module of the main control unit 11 adopts a bluetooth module, the indication module of the main control unit 11 adopts LED indication, and the communication mode between the bluetooth module and the single-chip microcomputer adopts serial communication.
Referring to fig. 8, fig. 8 is a functional block diagram of a motor execution unit 13 provided in an embodiment of the present application, where the motor execution unit 13 includes: a power conversion circuit 131, a motor drive circuit 132, and a motor. The input end of the power conversion circuit 131 is used for inputting an external alternating current power supply, the output end of the power conversion circuit 131 is connected with the power input end of the motor drive circuit 132, the control signal input end of the motor drive circuit 132 is connected with the main control unit 11, the output end of the motor drive circuit 132 is connected with a motor, and the motor is connected with the breaker body 2.
In this embodiment, the motor execution unit 13 includes a power conversion circuit 131, a motor driving circuit 132 and a motor, an external 220V ac power supply from a power line is converted into a 12V dc voltage by the power conversion circuit 131 and stores energy for the motor, after the main control unit 11 receives a fee control command of the electric energy meter 3, the main control unit 11 sends a control signal to the motor driving circuit 132, and the motor driving circuit 132 receives the control signal and outputs a corresponding action signal to the motor. The motor driving circuit 132 is required to provide forward and reverse voltages to the motor to control the voltages at two input terminals of the motor by using four-way switches.
The embodiment of the application provides a circuit breaker, include: the circuit breaker body 2 and the control circuit 1 as in any of the above. The wire inlet end of the circuit breaker body 2 is used for connecting a power line, and the wire outlet end of the circuit breaker body 2 is used for connecting load equipment; the motor execution unit 13 of the control circuit 1 drives the execution mechanism of the breaker body 2 to realize the operation of closing or opening.
In this embodiment, intelligent circuit breaker in intelligent circuit breaker system includes circuit breaker body 2 and control circuit 1 of control circuit breaker body 2, between circuit breaker body 2 connection power line and the load, control circuit 1 includes motor execution unit 13, master control unit 11 and energy storage unit 12, master control unit 11 is through output control signal to motor execution unit 13, motor execution unit 13 drives the actuating mechanism of circuit breaker body 2 and carries out the operation of closing or breaking the floodgate, wherein, utilize energy storage unit 12 alone to give master control unit 11 power supply, control circuit 1 does not acquire the electric energy through the power line, the electric energy that control circuit 1 consumed can not lead to the charging information increase that shows on the electric energy meter 3, avoid arousing the worry that the user leads to extra electric energy meter charging to intelligent circuit breaker.
The present embodiment also includes a circuit breaker system comprising: the electric energy meter 3 and at least one circuit breaker, wherein, the circuit breaker sets up the near-end that is close to the load on the electric power line, and the electric energy meter 3 sets up the far-end that is kept away from the load on the electric power line. The electric energy meter 3 can be only one, the circuit breakers are multiple, the circuit breakers respectively send respective characteristic information to the electric energy meter 3 through the power lines to conduct identification pairing, and after pairing, the circuit breakers respectively conduct data interaction with the electric energy meter 3 through respective wireless communication modules, namely, remote fee control of the circuit breakers is achieved through the electric energy meter 3.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A control circuit for a circuit breaker, comprising: the device comprises a motor execution unit, a main control unit and an energy storage unit; the main control unit is in a continuous power utilization state;
the motor execution unit is in signal connection with the main control unit, and the energy storage unit is electrically connected with the main control unit;
the energy storage unit is used for supplying power to the main control unit, the main control unit is used for outputting a control signal to the motor execution unit, and the control signal is used for indicating the motor execution unit to drive an execution mechanism of the breaker body to conduct switching-on or switching-off operation.
2. The control circuit of claim 1, further comprising:
the power input end of the self-electricity-taking unit is connected with the wire inlet end or the wire outlet end of the breaker body, and the power output end of the self-electricity-taking unit is respectively connected with the energy storage unit and the main control unit;
the self-electricity-taking unit is used for supplying power to the main control unit and charging the energy storage unit when the breaker is switched on.
3. The control circuit of claim 1, further comprising:
the power positive end of the networking identification unit is connected with the live wire inlet end of the breaker body, and the power negative end of the networking identification unit is connected with the zero wire inlet end of the breaker body; the networking identification unit is used for sending characteristic information to the electric energy meter through a power line when the circuit breaker is electrified to self-networking for the first time; the characteristic information is used for identifying, pairing and binding the circuit breaker by the electric energy meter.
4. The control circuit of claim 3, further comprising: an electromagnetic interference module;
one end of the electromagnetic interference module is connected with the positive end of the power supply of the networking identification unit, and the other end of the electromagnetic interference module is connected with the negative end of the power supply of the networking identification unit.
5. The control circuit of any of claims 1-4, wherein the master control unit comprises:
a wireless transmission module and a control module; the wireless transmission module is connected with the control module, and the control module is connected with the motor execution unit;
the wireless transmission module is used for carrying out data interaction between the electric energy meter and the circuit breaker after the electric energy meter and the circuit breaker are paired;
the control module is used for receiving external instructions through the wireless transmission module and outputting corresponding control signals to the motor execution unit according to the external instructions; the control signal comprises a signal for indicating closing, a signal for indicating opening or a signal for indicating allowing closing.
6. The control circuit of claim 5, wherein the master control unit further comprises:
the micro-motion scanning module is connected with the control module and used for acquiring key position information of the circuit breaker and sending the key position information to the control module; the key position information is used for indicating the state of the circuit breaker and the mode of the circuit breaker; the state of the circuit breaker comprises a closing position inching state, an initial position inching state, a tripping position inching state and a handle inching state; the modes of the circuit breaker comprise an automatic closing mode and a manual closing mode.
7. The control circuit of claim 5, wherein the master control unit further comprises:
the indication module is connected with the control module and is used for receiving an indication signal of the control module and carrying out acousto-optic indication based on the indication signal; the indication signal is used for indicating the state and/or the mode of the circuit breaker.
8. The control circuit of any of claims 1-4, wherein a positive power supply end of the motor execution unit is connected to a live wire inlet end of the circuit breaker body, and a negative power supply end of the motor execution unit is connected to a neutral wire inlet end of the circuit breaker body.
9. The control circuit of claim 8, wherein the motor execution unit comprises: the power supply conversion circuit, the motor driving circuit and the motor;
the input end of the power supply conversion circuit is connected with an external alternating current power supply, the output end of the power supply conversion circuit is connected with the power supply input end of the motor drive circuit, the control signal input end of the motor drive circuit is connected with the main control unit, the output end of the motor drive circuit is connected with the motor, and the motor is connected with the circuit breaker body.
10. A circuit breaker, comprising: a circuit breaker body and a control circuit as claimed in any one of claims 1 to 9;
the incoming line end of the breaker body is used for connecting a power line, and the outgoing line end of the breaker body is used for connecting load equipment;
and a motor execution unit of the control circuit drives an execution mechanism of the breaker body to realize the operation of closing or opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322001951.8U CN220585100U (en) | 2023-07-27 | 2023-07-27 | Circuit breaker control circuit and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322001951.8U CN220585100U (en) | 2023-07-27 | 2023-07-27 | Circuit breaker control circuit and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220585100U true CN220585100U (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322001951.8U Active CN220585100U (en) | 2023-07-27 | 2023-07-27 | Circuit breaker control circuit and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220585100U (en) |
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2023
- 2023-07-27 CN CN202322001951.8U patent/CN220585100U/en active Active
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