CN112769217A - Circuit breaker based on battery standby power supply system and circuit breaker control method - Google Patents

Circuit breaker based on battery standby power supply system and circuit breaker control method Download PDF

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Publication number
CN112769217A
CN112769217A CN201911004146.2A CN201911004146A CN112769217A CN 112769217 A CN112769217 A CN 112769217A CN 201911004146 A CN201911004146 A CN 201911004146A CN 112769217 A CN112769217 A CN 112769217A
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CN
China
Prior art keywords
switching
battery
power supply
control element
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201911004146.2A
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Chinese (zh)
Inventor
谢建波
于贻鹏
曹进
张燕
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Shanghai Liangxin Electrical Co Ltd
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Shanghai Liangxin Electrical Co Ltd
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Publication date
Application filed by Shanghai Liangxin Electrical Co Ltd filed Critical Shanghai Liangxin Electrical Co Ltd
Priority to CN201911004146.2A priority Critical patent/CN112769217A/en
Publication of CN112769217A publication Critical patent/CN112769217A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application provides a circuit breaker based on a battery standby power supply system and a circuit breaker control method, and relates to the technical field of low-voltage electrical appliances. The circuit breaker includes: the power supply comprises a main power supply, a battery, a processing unit, a voltage detection unit, a switching-on and switching-off control element and a load end; the main power supply is electrically connected with the load end and the switching-on and switching-off control element, and the battery is electrically connected with the load end and the main power supply through the switching-on and switching-off control element, so that the battery can also supply power to the load end when the main power supply fails and the circuit breaker is switched on; the processing unit is electrically connected with the switching-on and switching-off control element and the voltage detection unit, and the voltage detection unit is electrically connected with the battery; when the switching-on and switching-off control element is switched on and the battery supplies power, the voltage detection unit is used for detecting and acquiring a voltage signal of the battery, the processing unit is used for controlling the switching-on and switching-off of the switching-on and switching-off control element when the voltage signal meets a preset protection condition, the battery does not supply power any more, the battery feeding phenomenon is avoided, and the service life of the battery is effectively prolonged.

Description

Circuit breaker based on battery standby power supply system and circuit breaker control method
Technical Field
The application relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker based on a battery standby power supply system and a circuit breaker control method.
Background
The breaker is a switching device which can close, bear and break the current under the condition of a normal loop and can close, bear and break the current under the condition of an abnormal loop within a specified time, the breaker is connected into a power supply system, the breaker can perform switching-off and switching-on operations according to the working state of power grid equipment in the power supply system, and the breaker can be used for cutting off and connecting a load circuit and cutting off a fault circuit, so that the accident expansion is prevented, and the breaker has the effect of ensuring the safe operation of the power grid equipment.
In order to ensure that the power supply system can supply power to the connected power grid equipment uninterruptedly when the main power supply fails, the power supply system generally also comprises a standby battery, and when the main power supply fails, the standby battery is adopted to supply power to the power grid equipment.
However, in the existing power supply system, when the standby battery is used for supplying power for a long time, the standby battery is damaged due to battery feeding, and the service life of the standby battery is low.
Disclosure of Invention
An object of the application is to provide a circuit breaker and a circuit breaker control method based on battery standby power supply system aiming at the defects in the prior art, and the technical problem that the service life of a standby battery is short when the standby battery is adopted to supply power for a long time in the existing power supply system can be solved.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a circuit breaker based on a battery backup power supply system, including: the power supply comprises a main power supply, a battery, a processing unit, a voltage detection unit, a switching-on and switching-off control element and a load end; the main power supply is electrically connected with the load end and the opening and closing control element, and the battery is electrically connected with the load end and the main power supply through the opening and closing control element; the processing unit is electrically connected with the switching-on and switching-off control element and the voltage detection unit, and the voltage detection unit is electrically connected with the battery; when the switching-on and switching-off control element controls the circuit breaker to switch on and the battery supplies power, the voltage detection unit is used for detecting and acquiring a voltage signal of the battery and sending the voltage signal to the processing unit; and the processing unit is used for controlling the opening and closing control element to open the brake when the voltage signal meets a preset protection condition, wherein the preset protection condition is a preset voltage value.
Optionally, the circuit breaker further comprises: the first rectifying component, the second rectifying component and the DC/DC power conversion unit; the main power supply is electrically connected with the anode of the first rectifying assembly, and the cathode of the first rectifying assembly is electrically connected with the DC/DC power supply conversion unit; the battery is electrically connected with the anode of the second rectifying component, the cathode of the second rectifying component and the opening and closing control element are electrically connected with the DC/DC power supply conversion unit, and the DC/DC power supply conversion unit is electrically connected with the processing unit.
Optionally, the circuit breaker further comprises a mechanical button; one end of the mechanical button is connected with the battery and the voltage detection unit, and the other end of the mechanical button is connected with the anode of the second rectifying component, the DC/DC power conversion unit and the processing unit; when the circuit breaker is opened and the mechanical button is switched on, the battery is electrically connected with the anode of the second rectifying assembly, the cathode of the second rectifying assembly is electrically connected with the DC/DC power supply conversion unit, and the processing unit is used for acquiring a switching-on signal and controlling the switching-on and switching-off control element to be switched on according to the switching-on signal; or when the circuit breaker is switched on and the mechanical button is switched off, the processing unit is used for acquiring a switching-off signal and controlling the switching-on and switching-off control element to switch off according to the switching-off signal.
Optionally, the number of the rectifying elements included in the first rectifying component is smaller than the number of the rectifying elements included in the second rectifying component.
Optionally, the circuit breaker further comprises a communication unit electrically connected to the processing unit; the processing unit is used for receiving an opening or closing instruction sent by the peripheral terminal through the communication unit when the main power supply supplies power, and controlling the opening or closing of the opening and closing control element according to the opening or closing instruction; or when the switching-on and switching-off control element is switched on and is powered by the battery, the communication unit receives a switching-off command sent by the external terminal and controls the switching-on and switching-off of the switching-on and switching-off control element according to the switching-off command.
Optionally, the circuit breaker further includes a voltage dividing element, one end of the voltage dividing element is electrically connected to the DC/DC power conversion unit, and the other end of the voltage dividing element is electrically connected to the mechanical button.
In a second aspect, an embodiment of the present application provides a circuit breaker control method based on a battery backup power supply system, which is applied to a processing unit in the circuit breaker of the first aspect, and when a switching-on/off control element controls a circuit breaker to switch on and a battery supplies power, the method includes: acquiring a current voltage signal of the battery sent by a voltage detection unit; and judging whether the current voltage signal meets a preset protection condition, and if so, controlling the opening and closing control element to open.
Optionally, when the circuit breaker further includes a first rectifying component, a second rectifying component, a DC/DC power conversion unit, and a mechanical button; one end of the mechanical button is connected with the battery and the voltage detection unit, and the other end of the mechanical button is connected with the anode of the second rectifying component, the DC/DC power conversion unit and the processing unit; the method comprises the following steps: monitoring operation signals of a mechanical button, wherein the operation signals comprise a connection signal and a disconnection signal; and controlling the switching-on or switching-off of the switching-on and switching-off control element according to the switching-on signal or the switching-off signal.
Optionally, when the circuit breaker further includes a communication unit, and when the switching-on/off control element is switched on, the method includes: receiving a brake separating instruction sent by the peripheral terminal, and controlling the brake separating of the brake separating and closing control element according to the brake separating instruction; or when the opening and closing control element is opened and the main power supply meets the preset power supply condition, the method comprises the following steps: and receiving a closing instruction sent by the peripheral terminal, and controlling the opening and closing control element to close according to the opening instruction.
Optionally, the acquiring a current voltage signal of the battery sent by the voltage detection unit includes: and judging whether the current voltage signal meets a preset alarm condition, and if so, sending alarm information to the peripheral terminal.
The beneficial effect of this application is:
the embodiment of the application provides a circuit breaker based on a battery standby power supply system and a circuit breaker control method, and relates to the technical field of low-voltage electrical appliances. The circuit breaker includes: the power supply comprises a main power supply, a battery, a processing unit, a voltage detection unit, a switching-on and switching-off control element and a load end, wherein the main power supply is electrically connected with the load end and the switching-on and switching-off control element; the processing unit is electrically connected with the switching-on and switching-off control element and the voltage detection unit, and the voltage detection unit is electrically connected with the battery; the voltage detection unit is used for detecting and acquiring a voltage signal of the battery and sending the voltage signal to the processing unit; and the processing unit is used for controlling the opening and closing control element to open the brake in time when the voltage signal meets the preset protection condition, so that the battery does not supply power any more, the battery feed phenomenon can be avoided, and the service life of the battery is effectively prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a circuit breaker based on a battery backup power supply system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another circuit breaker based on a battery backup power supply system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a circuit breaker based on a battery backup power supply system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another circuit breaker based on a battery backup power supply system according to an embodiment of the present application;
fig. 5 is a schematic flowchart of a circuit breaker control method based on a battery backup power supply system according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart of another circuit breaker control method based on a battery backup power supply system according to an embodiment of the present application.
Icon: 110-a main power supply; 120-a battery; 130-a processing unit; 140-a voltage detection unit; 150-switching on and off control element; 151-load side; 160-a first rectifying component; 170-a second rectifying assembly; 180-mechanical buttons; 190-a communication unit; 210-a DC/DC power conversion unit; 220-voltage divider element.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Fig. 1 is a schematic structural diagram of a circuit breaker based on a battery backup power supply system according to an embodiment of the present application. As shown in fig. 1, the circuit breaker includes: main power supply 110, battery 120, processing unit 130, voltage detection unit 140, switching control element 150, and load terminal 151.
The main power supply 110 is electrically connected with the load end 151 and the switching-on/off control element 150, the battery 120 is electrically connected with the load end 151 and the main power supply 110 through the switching-on/off control element 150, and the load end 151 is a connection port on the load side, so that when the main power supply 110 normally supplies power and the breaker is switched on, the main power supply 110 can supply power to the load end 151 and charge the battery 120, and when the main power supply 110 fails to supply power and the breaker is switched on, the battery 120 can supply power to the load end 151 and realize uninterrupted power supply on the load side; the processing unit 130 is electrically connected with the switching-on/off control element 150 and the voltage detection unit 140, and the voltage detection unit 140 is electrically connected with the battery 120; when the switching-on/off control element 150 controls the circuit breaker to be switched on and the battery 120 supplies power, the voltage detection unit 140 is configured to detect and acquire a voltage signal of the battery 120 and send the voltage signal to the processing unit 130; and the processing unit 130 is configured to control the switching-off and switching-on control element 150 to switch off when the voltage signal meets a preset protection condition, and through the switching-off operation, the battery 120 is no longer powered, so that a feeding phenomenon of the battery 120 can be avoided, and the service life of the battery 120 is effectively prolonged, where the preset protection condition is a preset voltage value.
It should be noted that the processing Unit 130 may be implemented based on a Micro Controller Unit (MCU), or may be implemented based on other devices capable of performing data processing; the voltage detection unit 140 may be implemented by a preset voltage detection circuit, a voltage sensor, etc., and may be selected by itself according to actual needs, which is not limited herein. The preset protection condition is a preset voltage protection condition of the battery 120, and may correspond to a preset voltage value, and by comparing the voltage signal detected by the voltage detection unit 140 with the preset voltage value, it may be determined whether to control the opening and closing of the opening and closing control element 150, and if the opening and closing of the opening and closing control element 150 is performed, the corresponding circuit breaker is opened, and if the opening and closing control element 150 is closed, the corresponding circuit breaker is closed. Optionally, if the voltage signal satisfies the preset voltage protection condition, the processing unit 130 may control the switching-off and switching-on control element 150 to switch off, and the battery 120 does not supply power to the load terminal 151 any more after switching off, and at this time, the battery 120 does not have any discharging loop (except for self internal resistance discharging), so that the power feeding phenomenon of the battery 120 may be avoided, and the service life of the battery 120 is effectively prolonged.
Of course, the load connected to the load end 151 is not limited herein, and may be an illumination lamp, a power grid device, or the like, and may correspond to a corresponding load according to an actual application scenario.
To sum up, in the circuit breaker based on battery stand-by power supply system that this application embodiment provided, this circuit breaker includes: the main power supply can supply power to the load end and charge the battery when the main power supply is normal and the breaker is switched on, and the battery can supply power to the load end without interruption when the main power supply fails and the breaker is switched on; the processing unit is electrically connected with the switching-on and switching-off control element and the voltage detection unit, and the voltage detection unit is electrically connected with the battery; when the switching-on and switching-off control element controls the circuit breaker to switch on and the battery supplies power, the voltage detection unit is used for detecting and acquiring a voltage signal of the battery and sending the voltage signal to the processing unit; and the processing unit is used for controlling the opening and closing control element to open the brake in time when the voltage signal meets the preset protection condition, so that the battery does not supply power any more, the battery feed phenomenon can be avoided, and the service life of the battery is effectively prolonged.
Fig. 2 is a schematic structural diagram of another circuit breaker based on a battery backup power supply system according to an embodiment of the present application. Optionally, as shown in fig. 2, the circuit breaker further includes: a first rectifying element 160, a second rectifying element 170 and a DC/DC power conversion unit 210; the main power supply 110 is electrically connected to the positive electrode of the first rectifying assembly 160, and the negative electrode of the first rectifying assembly 160 is electrically connected to the DC/DC power conversion unit 210; the battery 120 is electrically connected to the positive electrode of the second rectifying component 170, the negative electrode of the second rectifying component 170 and the switching control element 150 are both electrically connected to the DC/DC power conversion unit 210, and the DC/DC power conversion unit 210 is electrically connected to the processing unit 130.
The first rectifying component 160 and the second rectifying component 170 are respectively used for rectifying the output voltage of the main power source 110 and the output voltage of the battery 120, optionally, after rectification, a voltage difference may exist between a voltage at the negative electrode of the first rectifying component 160 and a voltage at the negative electrode of the second rectifying component 170, whether the main power source 110 is valid or not may be determined according to the voltage difference, when the main power source 110 is valid, the main power source 110 is preferentially used for supplying power to the processing unit 130, so as to avoid power loss of the battery 120, and when the main power source 110 is invalid, the battery 120 is used for supplying power to the processing unit 130.
Optionally, the types of the rectifying elements of the first rectifying assembly 160 and the second rectifying assembly 170 may be the same, or may be different, and optionally, if the types of the rectifying elements are the same, the number of the rectifying elements included in the first rectifying assembly 160 and the second rectifying assembly 170 may be different, and the present application also does not limit a specific quantity value herein, as long as there is a voltage difference between the voltage at the negative electrode of the first rectifying assembly 160 and the voltage at the negative electrode of the second rectifying assembly 170, that is, in the case that the main power source 110 and the battery 120 supply power simultaneously, the main power source 110 is preferentially used for supplying power, wherein the rectifying element may be a rectifying bridge (e.g., an ac-rectifying bridge), a rectifying diode (e.g., a dc-rectifying diode), and the present application is not limited herein, and may be selected according to an actual application scenario.
For example, the first rectifying component 160 is a dc-rectifying diode, the second rectifying component 170 is two dc-rectifying diodes connected in series, and optionally, when the voltage at the negative electrode of the first rectifying component 160 is greater than the voltage at the negative electrode of the second rectifying component 170, the main power source 110 may be considered to be working normally, and the main power source 110 is preferentially used for supplying power; when the voltage at the negative electrode of the first rectifying assembly 160 is less than the voltage at the negative electrode of the second rectifying assembly 170, the main power source 110 may be considered to be disabled and may be powered by the battery 120.
The DC/DC power conversion unit 210 may convert the power of one voltage value into the power of another voltage value in a DC circuit, and the DC/DC power conversion unit 210 is configured to convert the voltage of the main power source 110 or the battery 120 through the first rectifying component 160 or the second rectifying component 170 and then through the DC/DC power conversion unit 210, and after the voltage is converted, the processing unit 130 may be powered, where it should be noted that, when the main power source 110 is normally powered, the main power source 110 is preferentially used to power the processing unit 130.
Of course, it should be noted that the processing unit 130 may also include its special power supply, and when the main power source 110 and the battery 120 cannot supply power to the processing unit 130, the processing unit 130 may also use its special power supply to perform power supply operation, so as to ensure the normal operation of the processing unit 130.
Fig. 3 is a schematic structural diagram of another circuit breaker based on a battery backup power supply system according to an embodiment of the present application, and fig. 4 is a schematic structural diagram of another circuit breaker based on a battery backup power supply system according to an embodiment of the present application. Optionally, as shown in fig. 3, the circuit breaker further includes a mechanical button 180; one end of the mechanical button 180 is connected to the battery 120 and the voltage detection unit 140, and the other end of the mechanical button 180 is connected to the positive electrode of the second rectification component 170, the DC/DC power conversion unit 210 and the processing unit 130; when the circuit breaker is opened and the mechanical button 180 is switched on, the battery 120 is electrically connected with the anode of the second rectifying component 170, the cathode of the second rectifying component 170 is electrically connected with the DC/DC power conversion unit 210, the processing unit 130 is used for acquiring a switching-on signal and controlling the switching-on and switching-off control element 150 to be switched on according to the switching-on signal, that is, when the main power supply 110 fails to power down and the circuit breaker is opened, the mechanical button 180 can be manually operated to be switched on, power is supplied through the battery 120, and when the processing unit 130 detects the switching-on signal, the circuit breaker can be controlled to be switched from a switching-off state to; or, when the circuit breaker is switched on and the mechanical button 180 is turned off, the processing unit 130 is configured to obtain a turn-off signal, and control the switching-on/off control element 150 to switch off according to the turn-off signal, that is, when the circuit breaker is switched on and the battery 120 supplies power, the mechanical button 180 may be manually operated to switch off, and when the processing unit 130 detects the turn-off signal, the circuit breaker may be controlled to switch from the switched-on state to the switched-off state, so as to implement manual operation of switching on/off of the circuit breaker.
Alternatively, the number of the rectifying elements included in the first rectifying component 160 may be smaller than the number of the rectifying elements included in the second rectifying component 170.
If the types of the rectifying elements included in the first rectifying assembly 160 and the second rectifying assembly 170 are the same, the number of the rectifying elements included in the first rectifying assembly 160 may be smaller than the number of the rectifying elements included in the second rectifying assembly 170, as shown in fig. 4, the rectifying elements are dc-rectifying diodes, the number of the rectifying elements in the first rectifying assembly 160 is 1, and the number of the rectifying elements in the second rectifying assembly 170 is 2, so that a voltage difference exists between a voltage at the negative pole of the first rectifying assembly 160 and a voltage at the negative pole of the second rectifying assembly 170, and the main power supply 110 can be used to supply power to the processing unit 130 preferentially when the main power supply 110 operates normally; when the main power source 110 fails to be powered off and the circuit breaker is opened, if the mechanical button 180 is operated to be turned on, the battery 120 can be used for supplying power, and when the processing unit 130 detects the on signal, the circuit breaker can be controlled to be switched from the open state to the closed state, so that uninterrupted power supply on the load side is realized.
Optionally, as shown in fig. 3, the circuit breaker further includes a communication unit 190, and the communication unit 190 is electrically connected to the processing unit 130; the processing unit 130 is configured to receive, through the communication unit 190, an opening or closing instruction sent by the external terminal when the main power source 110 supplies power, and control the opening or closing of the opening and closing control element 150 according to the opening or closing instruction, that is, if the main power source 110 supplies power, the processing unit 190 may receive the opening or closing instruction sent by the external terminal, so as to control the circuit breaker to switch from an opening state to a closing state, or from the closing state to the opening state, so as to implement remote opening and closing operations on the circuit breaker; or, when the switching control element 150 is switched on and the battery 120 supplies power, the communication unit 190 receives a switching-off instruction sent by the external terminal, and controls the switching-off of the switching control element 150 according to the switching-off instruction, and the circuit breaker can be switched from a current switching-on state to a switching-off state, so that when the switching-off control element 150 is switched on and the battery 120 supplies power, the circuit breaker can be remotely switched off. Of course, the power supply manner of the communication unit 190 is not limited in this application, and optionally, the power supply converted by the DC/DC power conversion unit 210 may supply power to the processing unit 130 and the communication unit 190, or may also supply power by a special power supply, as shown by the power supply VCC in fig. 4.
The communication unit 190 is used for transmitting data and commands between the processing unit 130 and the peripheral terminal, and may be implemented based on Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), and other wireless communication technologies.
Optionally, the peripheral terminal may be a peripheral cabinet terminal, a peripheral mobile terminal, and the like that perform data interaction with the processing unit 130, and the application is not limited herein, and optionally, when the peripheral terminal is the peripheral mobile terminal, the processing unit 130 may send the relevant parameters in the operation process of the battery backup power supply system to the peripheral mobile terminal, where the relevant parameters may include one or a combination of more of the following: for example, the on-off state of the circuit breaker, the number of times of the on-off state, the battery state of the battery, the usage time and frequency, the operation state and the number of times of the operation of the mechanical button 180, and the like, wherein the on-off state of the circuit breaker may include an open state and a closed state; the battery state of the battery 120 may include a full state, a charging state, a low state, and other states, which are not limited herein, and may also include other parameters according to the actual application.
Optionally, when the relevant parameters include parameters such as a battery state, a service time, and a service frequency of the battery 120, the peripheral mobile terminal may predict a service life, a health index, and the like of the battery 120 according to a corresponding relationship between historical relevant parameters and the service life of the battery 120, so that a maintenance worker may repair or replace the battery 120 in time according to the predicted service life, and after the main power source 110 fails due to power failure, the battery 120 may be used to supply power, thereby ensuring uninterrupted power supply at the load side.
Optionally, as shown in fig. 3, the circuit breaker further includes a voltage dividing element 220, one end of the voltage dividing element 220 is electrically connected to the DC/DC power converting unit 210, and the other end of the voltage dividing element 220 is electrically connected to the mechanical button 180, and the voltage dividing element 220 is electrically connected between the mechanical button 180 and the DC/DC power converting unit 210, so that a voltage dividing function and a circuit are performed, optionally, as shown in fig. 4, the voltage dividing element 220 may be a voltage dividing resistor, and of course, other voltage dividing elements 220 may also be used, and the present application is not limited herein.
Fig. 5 is a schematic flowchart of a method for controlling a circuit breaker based on a battery backup power supply system according to an embodiment of the present application, where the method may be applied to the processing unit, and optionally, as shown in fig. 5, when a switching-on/off control element controls a circuit breaker to switch on and a battery supplies power, the method includes:
s101, acquiring a current voltage signal of the battery sent by the voltage detection unit.
The voltage detection unit can dynamically detect a voltage signal of the battery and send the voltage signal to the processing unit, and the processing unit can judge whether the battery can be continuously used for supplying power according to the voltage signal.
S102, judging whether the current voltage signal meets a preset protection condition or not, and if so, controlling the opening and closing control element to open.
The preset protection condition is a preset voltage protection condition of the battery, and may correspond to a preset voltage value, optionally, the obtained current voltage signal may be compared with the preset voltage value, if the current voltage signal is smaller than the preset voltage value, the battery power supply time may be considered to be too long, if the battery power supply is resumed, the service life of the battery may be seriously shortened, the switching-on/off control element may be controlled to switch from the switching-on state to the switching-off state, and the battery does not supply power any more.
For example, the preset switching-off voltage value is V1, and the voltage value of the acquired current voltage signal of the battery is V, if V < V1, the switching-off and switching-on control element can be controlled to switch from the switching-on state to the switching-off state, and the battery does not supply power any more, so that the battery feeding phenomenon can be avoided, and the service life of the battery can be effectively prolonged. It should be noted that the preset voltage value V1 may be set according to the main power supply voltage value V0, for example, the relationship between V1 and V0 may be represented as V1 ═ V0 ×%, although the present application does not limit the specific values of V0 and V1, does not limit the value of X%, and may be any value between 60% and 70%, and may be selected or set according to the actual application scenario to suit different power supply systems.
Fig. 6 is a schematic flowchart of another circuit breaker control method based on a battery backup power supply system according to an embodiment of the present application. Optionally, when the circuit breaker further comprises a first rectifying component, a second rectifying component, a DC/DC power conversion unit, and a mechanical button; as shown in fig. 6, one end of the mechanical button is connected to the battery and the voltage detection unit, and the other end of the mechanical button is connected to the positive electrode of the second rectification component, the DC/DC power conversion unit, and the processing unit, and the method includes:
s201, monitoring operation signals of the mechanical button, wherein the operation signals comprise an on signal and an off signal.
And S202, controlling the switching-on or switching-off of the switching-on and switching-off control element according to the conducting signal or the disconnecting signal.
Wherein, according to whether normal power supply is normally supplied to the main power, the state of circuit breaker can be divided into the following state: when the main power supply supplies power and the breaker is switched on, if the processing unit detects a disconnection signal, the breaker can be controlled to be switched from a switching-on state to a switching-off state; when the main power supply is normal and the breaker is opened, if the processing unit detects a conducting signal, the breaker can be controlled to be switched from an opening state to a closing state; when the main power supply fails due to power failure and the breaker is switched on, if the processing unit detects the disconnection signal, the circuit breaker can be automatically controlled to be switched from a switch-on state to a switch-off state; when a main power supply fails to work due to power failure and the breaker is opened, if the mechanical button is operated to conduct, power is supplied through the battery, and when the processing unit detects the conducting signal, the circuit breaker can be controlled to be switched from an opening state to a closing state, so that the switching of the opening state and the closing state of the breaker can be realized through the mechanical button no matter the main power supply or the battery supplies power.
Optionally, when the circuit breaker further includes a communication unit, and when the switching-on/off control element is switched on, the method includes: the method comprises the steps of receiving a switching-off instruction sent by an external terminal, controlling switching-off and switching-on of a switching-off control element according to the switching-off instruction, namely receiving the switching-off instruction sent by the external terminal and switching the circuit breaker from a switching-on state to a switching-off state no matter whether the circuit breaker is powered by a main power supply or a battery at present when the circuit breaker is in a switching-on state; or when the opening and closing control element is opened and the main power supply meets the preset power supply condition, the method comprises the following steps: the method comprises the steps of receiving a switching-on instruction sent by an external terminal, and controlling a switching-on and switching-off control element to switch on according to the switching-off instruction, namely, if a breaker is in a switching-off state, when a main power supply can normally supply power, receiving the switching-on instruction sent by the external terminal, and switching the breaker from the switching-off state to the switching-on state, and when the main power supply cannot normally supply power, optionally forbidding the breaker from the switching-off state to the switching-on state, forbidding a battery to supply power, and effectively achieving the effect of protecting the battery.
Optionally, the obtaining the current voltage signal of the battery sent by the voltage detection unit includes: and judging whether the current voltage signal meets a preset alarm condition, and if so, sending alarm information to the peripheral terminal.
The preset alarm condition is a preset voltage alarm condition of the battery, and may correspond to a preset voltage value, optionally, the obtained current voltage signal may be compared with the preset voltage value, if the current voltage signal is smaller than the preset voltage value, it may be considered that the service life of the battery may be shortened if the battery is used for power supply again, an alarm message may be sent to the peripheral terminal, and after receiving the alarm message through the peripheral terminal, the maintenance personnel may take a certain measure, for example, may send an opening command through the peripheral terminal to control opening and closing of the opening and closing control element; or other peripheral power supplies can be adopted to charge the battery, so that the phenomenon that the voltage of the battery is continuously reduced is avoided, and the service life of the battery auxiliary can be effectively prolonged.
For example, the preset alarm voltage value is V2, and the acquired voltage value of the current voltage signal of the battery is V, if V < V2, the processing unit may alarm in advance, record an alarm log, and send the alarm information and the alarm log to the peripheral terminal. It should be noted that the preset voltage value V2 may be set according to the main power supply voltage value V0, for example, the relationship between V2 and V0 may be represented as V2 ═ V0 ═ y%, of course, the present application does not limit the specific values of V0 and V2, does not limit the value of y%, and may be any value between 70% and 80%, and may be selected or set according to the actual application scenario to suit different power supply systems, but it should be noted that, if the preset opening voltage value V1 and the preset alarm voltage value V2 are both present, V2> V1 may be set, so that when V1< V2, an alarm may be issued first, and when V < V1, the opening and closing control element is controlled to open, thereby avoiding the occurrence of the battery feeding phenomenon, and effectively prolonging the service life of the battery.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and control method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, 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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A circuit breaker based on battery backup power supply system, comprising: the power supply comprises a main power supply, a battery, a processing unit, a voltage detection unit, a switching-on and switching-off control element and a load end; the main power supply is electrically connected with the load end and the opening and closing control element, and the battery is electrically connected with the load end and the main power supply through the opening and closing control element;
the processing unit is electrically connected with the switching-on and switching-off control element and the voltage detection unit, and the voltage detection unit is electrically connected with the battery;
when the switching-on and switching-off control element controls the circuit breaker to switch on and the battery supplies power, the voltage detection unit is used for detecting and acquiring a voltage signal of the battery and sending the voltage signal to the processing unit;
and the processing unit is used for controlling the opening and closing control element to open the brake when the voltage signal meets a preset protection condition, wherein the preset protection condition is a preset voltage value.
2. The circuit breaker of claim 1, further comprising: the first rectifying component, the second rectifying component and the DC/DC power conversion unit;
the main power supply is electrically connected with the positive electrode of the first rectifying assembly, and the negative electrode of the first rectifying assembly is electrically connected with the DC/DC power supply conversion unit; the battery is electrically connected with the anode of the second rectifying assembly, the cathode of the second rectifying assembly and the opening and closing control element are electrically connected with the DC/DC power supply conversion unit, and the DC/DC power supply conversion unit is electrically connected with the processing unit.
3. The circuit breaker of claim 2, further comprising: a mechanical button;
one end of the mechanical button is connected with the battery and the voltage detection unit, and the other end of the mechanical button is connected with the anode of the second rectifying component, the DC/DC power conversion unit and the processing unit;
when the circuit breaker is opened and the mechanical button is switched on, the battery is electrically connected with the anode of the second rectifying assembly, the cathode of the second rectifying assembly is electrically connected with the DC/DC power supply conversion unit, and the processing unit is used for acquiring a switching-on signal and controlling the switching-on and switching-off control element to be switched on according to the switching-on signal; or when the circuit breaker is switched on and the mechanical button is switched off, the processing unit is used for acquiring a switching-off signal and controlling the switching-on and switching-off control element to switch off according to the switching-off signal.
4. The circuit breaker of claim 2 or 3, wherein the first rectifying assembly comprises a smaller number of rectifying elements than the second rectifying assembly.
5. The circuit breaker of claim 1, further comprising a communication unit electrically connected to the processing unit;
the processing unit is used for receiving an opening or closing instruction sent by an external terminal through the communication unit when the main power supply supplies power, and controlling the opening or closing of the opening and closing control element according to the opening or closing instruction; or when the switching-on and switching-off control element is switched on and the battery supplies power, receiving a switching-off command sent by an external terminal through the communication unit, and controlling the switching-on and switching-off of the switching-on and switching-off control element according to the switching-off command.
6. The circuit breaker according to claim 3, further comprising a voltage dividing element having one end electrically connected to the DC/DC power conversion unit and the other end electrically connected to the mechanical button.
7. A circuit breaker control method based on a battery backup power supply system, characterized in that, when the switching-on/off control element controls the circuit breaker to be switched on and the battery supplies power, the method is applied to the processing unit in the circuit breaker of any one of claims 1 to 6, and the method comprises:
acquiring a current voltage signal of the battery sent by the voltage detection unit;
and judging whether the current voltage signal meets a preset protection condition, and if so, controlling the opening and closing control element to open.
8. The method of claim 7, wherein the circuit breaker further comprises a first rectifying component, a second rectifying component, a DC/DC power conversion unit, and a mechanical button; one end of the mechanical button is connected with the battery and the voltage detection unit, and the other end of the mechanical button is connected with the anode of the second rectifying component, the DC/DC power conversion unit and the processing unit; the method comprises the following steps:
monitoring operation signals of the mechanical button, wherein the operation signals comprise a connection signal and a disconnection signal;
and controlling the switching-on or switching-off of the switching-on and switching-off control element according to the conducting signal or the disconnecting signal.
9. The method of claim 7, wherein when the circuit breaker further comprises a communication unit, upon closing of a switching control element, the method comprises:
receiving a brake separating instruction sent by an external terminal, and controlling the brake separating and closing control element to separate according to the brake separating instruction;
or when the switching-on and switching-off control element is switched off and the main power supply meets the preset power supply condition, the method comprises the following steps:
and receiving a closing instruction sent by an external terminal, and controlling the switching-on and switching-off control element to close according to the switching-off instruction.
10. The method of claim 9, wherein obtaining the current voltage signal of the battery sent by the voltage detection unit comprises:
and judging whether the current voltage signal meets a preset alarm condition, and if so, sending alarm information to the peripheral terminal.
CN201911004146.2A 2019-10-21 2019-10-21 Circuit breaker based on battery standby power supply system and circuit breaker control method Withdrawn CN112769217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911004146.2A CN112769217A (en) 2019-10-21 2019-10-21 Circuit breaker based on battery standby power supply system and circuit breaker control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911004146.2A CN112769217A (en) 2019-10-21 2019-10-21 Circuit breaker based on battery standby power supply system and circuit breaker control method

Publications (1)

Publication Number Publication Date
CN112769217A true CN112769217A (en) 2021-05-07

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