Universal circuit breaker

Abstract

The utility model discloses a universal circuit breaker. The universal circuit breaker comprises a controller and an energy storage motor, the opening and closing detection circuit is used for collecting the opening state and the closing state of the universal circuit breaker and inputting signals of the opening state and the closing state to the controller; the energy storage detection circuit collects the energy storage state of the universal circuit breaker and inputs the energy storage state to the controller; the energy storage driving circuit is used for acquiring a driving signal of the controller and controlling an energy storage motor to perform energy storage action; the energy storage motor state detection circuit collects an action output signal of the energy storage motor and inputs the action output signal to the controller; and the alarm circuit obtains an alarm signal of the controller to give an alarm. According to the universal circuit breaker provided by the utility model, when the energy storage motor is in an abnormal state, the controller receives a corresponding abnormal signal and prompts through the alarm circuit, so that the universal circuit breaker is maintained in time, and the automatic energy storage action of the universal circuit breaker can be ensured after the next opening.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity consumption and distribution, in particular to a universal circuit breaker. Background Art

[0002] Universal circuit breaker, also known as frame circuit breaker, is a mechanical switch that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions. It can be used to distribute electric energy and protect lines and power equipment from overload, undervoltage, short circuit, etc.

[0003] The motor energy storage device is an important energy storage structure for closing the circuit breaker. The existing motor energy storage device structure for the operating mechanism of the universal circuit breaker generally includes: energy storage motor, gear reduction device, spring, stopper and micro switch, etc. The energy storage motor provides power, reduces the speed through the gear reduction device, increases the torque, stretches and compresses the spring to store energy. When the energy storage mechanism quickly turns to the stop position, the micro switch is activated, the current of the energy storage motor is cut off, and the energy storage mechanism finally stops at the stop position, and the output force of the energy storage mechanism acts on the stop closing lock. Therefore, whether the energy storage motor can work normally determines whether the universal circuit breaker can store energy normally. Utility Model Content

[0004] In order to solve the above problems, the technical solution provided by the utility model is:

[0005] A universal circuit breaker, comprising:

[0006] Controller and energy storage motor;

[0007] An opening and closing detection circuit, wherein the opening and closing detection circuit collects the opening state and the closing state of the universal circuit breaker, and inputs the signals of the opening state and the closing state into the controller;

[0008] An energy storage detection circuit, wherein the energy storage detection circuit collects the energy storage state of the universal circuit breaker and inputs the energy storage state to the controller;

[0009] An energy storage drive circuit, wherein the energy storage drive circuit obtains a drive signal from the controller and controls the energy storage motor to perform energy storage action;

[0010] An energy storage motor state detection circuit, wherein the energy storage motor state detection circuit collects an action output signal of the energy storage motor and inputs the action output signal to the controller;

[0011] An alarm circuit is used to obtain an alarm signal from the controller to generate an alarm.

[0012] The utility model is further configured that the energy storage motor state detection circuit includes a motor drive voltage detection circuit and a motor overload detection circuit;

[0013] The motor drive voltage detection circuit comprises a resistor voltage divider circuit, a reference voltage circuit and a voltage signal comparison circuit, wherein the input end of the resistor voltage divider circuit is respectively connected to the output end of the controller and the drive power output end of the energy storage motor, the output end of the resistor voltage divider circuit and the output end of the reference voltage circuit are respectively connected to the input end of the voltage signal comparison circuit, and the output end of the voltage signal comparison circuit is connected to the input end of the controller;

[0014] The motor overload detection circuit includes a resistance sampling circuit, a signal amplifying circuit and a voltage follower circuit. The resistance sampling circuit is connected to the output end loop of the driving power supply of the energy storage motor, the resistance sampling circuit is connected to the input end of the signal amplifying circuit, the output end of the signal amplifying circuit is connected to the input end of the voltage follower circuit, and the output end of the voltage follower circuit is connected to the input end of the controller.

[0015] The utility model is further configured such that the resistor voltage divider circuit includes a resistor R1, a resistor R2 and a MOS tube M1, one end of the resistor R1 is connected to the drive power output terminal V_power of the energy storage motor, the other end of the resistor R1 is connected to the source of the MOS tube M1, the drain of the MOS tube M1 is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the gate of the MOS tube M1 is connected to the output end of the controller.

[0016] The utility model is further configured that the voltage signal comparison circuit includes a comparator U1, the positive input end of the comparator U1 is connected to the output end V_ref of the reference voltage circuit, the negative input end of the comparator U1 is connected to the drain of the MOS tube M1, and the output end of the comparator U1 is connected to the input end of the controller.

[0017] The utility model is further configured that the MOS tube M1 is a P-type MOS tube.

[0018] The utility model is further configured such that the resistance sampling circuit includes a resistor R3, the signal amplification circuit includes a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and an operational amplifier U2, the resistor R3 is connected to the drive power output end loop of the energy storage motor, the resistor R4 and the resistor R5 are connected in series, the resistor R6 and the resistor R7 are connected in series, one end of the resistor R4 and one end of the resistor R6 are respectively connected to the two ends of the resistor R3, one end of the resistor R5 is grounded, the other end of the resistor R4 is connected to the inverting input end of the operational amplifier U2, the other end of the resistor R6 is connected to the non-inverting input end of the operational amplifier U2, one end of the resistor R7 is respectively connected to the output end of the operational amplifier U2 and one end of the resistor R8, and the other end of the resistor R8 is connected to the input end of the voltage follower circuit.

[0019] The utility model is further configured such that the voltage follower circuit includes a voltage follower U3, a resistor R9, a resistor R10 and a capacitor C1, the positive input end of the voltage follower U3 is connected to the other end of the resistor R8, the negative input end of the voltage follower U3 is connected to one end of the resistor R10, the other end of the resistor R10 is respectively connected to the output end of the voltage follower U3 and one end of the resistor R9, and the other end of the resistor R9 is connected to the input end of the controller.

[0020] The utility model is further configured such that the operational amplifier U2 and the voltage follower U3 are both of the type LM358.

[0021] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0022] The universal circuit breaker of the present technical solution is provided with an energy storage motor state detection circuit and an alarm circuit for the energy storage motor. When the energy storage motor performs energy storage action after the universal circuit breaker is opened, the energy storage motor state detection circuit collects the state of the energy storage motor. When the energy storage motor is in an abnormal state, the controller receives the corresponding abnormal signal and gives a prompt through the alarm circuit, so as to timely maintain the universal circuit breaker and ensure that the universal circuit breaker can perform automatic energy storage action after the next opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a circuit principle block diagram of a universal circuit breaker according to an embodiment of the utility model.

[0024] Figure 2 This is a schematic diagram of a motor drive voltage detection circuit according to an embodiment of the utility model.

[0025] Figure 3 This is a schematic diagram of a motor overload detection circuit according to an embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components; it can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] Combined with Figure 1 To Attachment Figure 3 The technical solution of the utility model is a universal circuit breaker, comprising:

[0030] Controller 1 and energy storage motor 2;

[0031] An opening and closing detection circuit 3, wherein the opening and closing detection circuit 3 collects the opening state and the closing state of the universal circuit breaker, and inputs the signals of the opening state and the closing state to the controller 1;

[0032] An energy storage detection circuit 4, wherein the energy storage detection circuit 4 collects the energy storage state of the universal circuit breaker and inputs the energy storage state to the controller 1;

[0033] An energy storage driving circuit 6, wherein the energy storage driving circuit 6 obtains a driving signal from the controller 1 and controls the energy storage motor 2 to perform energy storage;

[0034] An energy storage motor state detection circuit 5, wherein the energy storage motor state detection circuit 5 collects an action output signal of the energy storage motor 2 and inputs the action output signal to the controller 1;

[0035] The alarm circuit 7 obtains the alarm signal of the controller 1 and generates an alarm.

[0036] In the above embodiment, the controller 1 drives the energy storage drive circuit 6 to work according to the opening state, closing state and energy storage state, so as to realize the energy storage action of the universal circuit breaker after opening, so as to realize the automatic closing action.

[0037] In the above embodiment, the action output signal of the energy storage motor 2 includes a current signal of the energy storage motor 2 when it is in action and a voltage signal of a power source driving the energy storage motor 2 to work.

[0038] In this embodiment, the energy storage motor state detection circuit 5 includes a motor drive voltage detection circuit 51 and a motor overload detection circuit 52;

[0039] As attached Figure 2 As shown, the motor drive voltage detection circuit 51 includes a resistor voltage divider circuit 511, a reference voltage circuit 512 and a voltage signal comparison circuit 513, the input end of the resistor voltage divider circuit 511 is respectively connected to the output end of the controller 1 and the drive power output end of the energy storage motor 2, the output end of the resistor voltage divider circuit 511 and the output end of the reference voltage circuit 512 are respectively connected to the input end of the voltage signal comparison circuit 513, and the output end of the voltage signal comparison circuit 513 is connected to the input end of the controller 1;

[0040] As attached Figure 3 As shown, the motor overload detection circuit 52 includes a resistance sampling circuit 521, a signal amplifying circuit 522 and a voltage follower circuit 523. The resistance sampling circuit 521 is connected to the output end loop of the driving power supply of the energy storage motor 2, the resistance sampling circuit 521 is connected to the input end of the signal amplifying circuit 522, the output end of the signal amplifying circuit 522 is connected to the input end of the voltage follower circuit 523, and the output end of the voltage follower circuit 523 is connected to the input end of the controller 1.

[0041] In this embodiment, the resistor voltage divider circuit 511 includes a resistor R1, a resistor R2 and a MOS tube M1, one end of the resistor R1 is connected to the driving power output terminal V_power of the energy storage motor, the other end of the resistor R1 is connected to the source of the MOS tube M1, the drain of the MOS tube M1 is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the gate of the MOS tube M1 is connected to the output end of the controller.

[0042] In this embodiment, the voltage signal comparison circuit 513 includes a comparator U1, a positive input terminal of the comparator U1 is connected to the output terminal V_ref of the reference voltage circuit, a negative input terminal of the comparator U1 is connected to the drain of the MOS tube M1, and an output terminal of the comparator U1 is connected to the input terminal of the controller.

[0043] In the above embodiment, the reference voltage circuit 512 is a DC voltage of +3.3V or +5.0V. The specific circuit thereof can refer to a conventional DC / DC conversion circuit and is not limited in the present embodiment.

[0044] In this embodiment, the MOS transistor M1 is a P-type MOS transistor.

[0045] In this embodiment, the resistance sampling circuit 521 includes a resistor R3, and the signal amplification circuit 522 includes a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and an operational amplifier U2. The resistor R3 is connected to the output end loop of the driving power supply of the energy storage motor, the resistor R4 and the resistor R5 are connected in series, and the resistor R6 and the resistor R7 are connected in series. One end of the resistor R4 and one end of the resistor R6 are respectively connected to the two ends of the resistor R3, one end of the resistor R5 is grounded, the other end of the resistor R4 is connected to the inverting input end of the operational amplifier U2, the other end of the resistor R6 is connected to the non-inverting input end of the operational amplifier U2, one end of the resistor R7 is respectively connected to the output end of the operational amplifier U2 and one end of the resistor R8, and the other end of the resistor R8 is connected to the input end of the voltage follower circuit.

[0046] In this embodiment, the voltage follower circuit 523 includes a voltage follower U3, a resistor R9, a resistor R10 and a capacitor C1, the positive input end of the voltage follower U3 is connected to the other end of the resistor R8, the negative input end of the voltage follower U3 is connected to one end of the resistor R10, the other end of the resistor R10 is respectively connected to the output end of the voltage follower U3 and one end of the resistor R9, and the other end of the resistor R9 is connected to the input end of the controller; the signal is voltage-followed by the voltage follower U3, and a smooth voltage signal is obtained after RC filtering composed of the resistor R9 and the capacitor C1.

[0047] In this embodiment, the operational amplifier U2 and the voltage follower U3 are both LM358.

[0048] The universal circuit breaker of this embodiment is provided with an energy storage motor state detection circuit and an alarm circuit for the energy storage motor. When the energy storage motor performs energy storage action after the universal circuit breaker is opened, the energy storage motor state detection circuit collects the state of the energy storage motor. When the energy storage motor is in an abnormal state, the controller receives the corresponding abnormal signal and gives a prompt through the alarm circuit, so as to timely maintain the universal circuit breaker and ensure that the universal circuit breaker can perform automatic energy storage action after the next opening.

[0049] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A universal circuit breaker, characterized in that: include: Controller and energy storage motor; An opening and closing detection circuit, wherein the opening and closing detection circuit collects the opening state and the closing state of the universal circuit breaker, and inputs the signals of the opening state and the closing state into the controller; An energy storage detection circuit, wherein the energy storage detection circuit collects the energy storage state of the universal circuit breaker and inputs the energy storage state to the controller; An energy storage drive circuit, wherein the energy storage drive circuit obtains a drive signal from the controller and controls the energy storage motor to perform energy storage action; An energy storage motor state detection circuit, wherein the energy storage motor state detection circuit collects an action output signal of the energy storage motor and inputs the action output signal to the controller; An alarm circuit is used to obtain an alarm signal from the controller to generate an alarm.

2. A universal circuit breaker according to claim 1, characterized in that: The energy storage motor state detection circuit includes a motor drive voltage detection circuit and a motor overload detection circuit; The motor drive voltage detection circuit comprises a resistor voltage divider circuit, a reference voltage circuit and a voltage signal comparison circuit, wherein the input end of the resistor voltage divider circuit is respectively connected to the output end of the controller and the drive power output end of the energy storage motor, the output end of the resistor voltage divider circuit and the output end of the reference voltage circuit are respectively connected to the input end of the voltage signal comparison circuit, and the output end of the voltage signal comparison circuit is connected to the input end of the controller; The motor overload detection circuit includes a resistance sampling circuit, a signal amplifying circuit and a voltage follower circuit. The resistance sampling circuit is connected to the output end loop of the driving power supply of the energy storage motor, the resistance sampling circuit is connected to the input end of the signal amplifying circuit, the output end of the signal amplifying circuit is connected to the input end of the voltage follower circuit, and the output end of the voltage follower circuit is connected to the input end of the controller.

3. A universal circuit breaker according to claim 2, characterized in that: The resistor voltage divider circuit includes a resistor R1, a resistor R2 and a MOS tube M1, one end of the resistor R1 is connected to the drive power output terminal V_power of the energy storage motor, the other end of the resistor R1 is connected to the source of the MOS tube M1, the drain of the MOS tube M1 is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the gate of the MOS tube M1 is connected to the output end of the controller.

4. A universal circuit breaker according to claim 3, characterized in that: The voltage signal comparison circuit includes a comparator U1, a positive input terminal of the comparator U1 is connected to the output terminal V_ref of the reference voltage circuit, a negative input terminal of the comparator U1 is connected to the drain of the MOS tube M1, and an output terminal of the comparator U1 is connected to the input terminal of the controller.

5. A universal circuit breaker according to claim 3 or 4, characterized in that: The MOS tube M1 is a P-type MOS tube.

6. A universal circuit breaker according to claim 2, characterized in that: The resistance sampling circuit includes a resistor R3, and the signal amplification circuit includes a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and an operational amplifier U2. The resistor R3 is connected to the output end loop of the driving power supply of the energy storage motor, the resistor R4 and the resistor R5 are connected in series, the resistor R6 and the resistor R7 are connected in series, one end of the resistor R4 and one end of the resistor R6 are respectively connected to the two ends of the resistor R3, one end of the resistor R5 is grounded, the other end of the resistor R4 is connected to the inverting input end of the operational amplifier U2, the other end of the resistor R6 is connected to the non-inverting input end of the operational amplifier U2, one end of the resistor R7 is respectively connected to the output end of the operational amplifier U2 and one end of the resistor R8, and the other end of the resistor R8 is connected to the input end of the voltage follower circuit.

7. A universal circuit breaker according to claim 6, characterized in that: The voltage follower circuit includes a voltage follower U3, a resistor R9, a resistor R10 and a capacitor C1, the positive input end of the voltage follower U3 is connected to the other end of the resistor R8, the negative input end of the voltage follower U3 is connected to one end of the resistor R10, the other end of the resistor R10 is respectively connected to the output end of the voltage follower U3 and one end of the resistor R9, and the other end of the resistor R9 is connected to the input end of the controller.

8. A universal circuit breaker according to claim 7, characterized in that: The operational amplifier U2 and the voltage follower U3 are both LM358.

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