CN112421763A - Electric power direct current power supply control system - Google Patents

Electric power direct current power supply control system Download PDF

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Publication number
CN112421763A
CN112421763A CN202011365752.XA CN202011365752A CN112421763A CN 112421763 A CN112421763 A CN 112421763A CN 202011365752 A CN202011365752 A CN 202011365752A CN 112421763 A CN112421763 A CN 112421763A
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CN
China
Prior art keywords
resistor
triode
circuit
control circuit
diode
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Granted
Application number
CN202011365752.XA
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Chinese (zh)
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CN112421763B (en
Inventor
匡红刚
易鹏飞
周为
梁科
邹平
刘立
姚远
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STATE GRID CHONGQING ELECTRIC POWER Co CHANGSHOU POWER SUPPLY BRANCH
State Grid Corp of China SGCC
Original Assignee
STATE GRID CHONGQING ELECTRIC POWER Co CHANGSHOU POWER SUPPLY BRANCH
State Grid Corp of China SGCC
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Priority to CN202011365752.XA priority Critical patent/CN112421763B/en
Publication of CN112421763A publication Critical patent/CN112421763A/en
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Publication of CN112421763B publication Critical patent/CN112421763B/en
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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
    • H02J9/061—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 for DC powered loads
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • 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
    • 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
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • 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
    • Y04S20/248—UPS systems or standby or emergency generators
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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

Abstract

The invention provides an electric power direct current power supply control system, which comprises a main power supply module, a standby power supply module, a controller, a mobile communication module and a remote monitoring center, wherein the main power supply module is connected with the standby power supply module; the main power supply module is used for converting commercial power into direct current and supplying power to a load; the standby power supply module comprises a main storage battery VBAT1, an auxiliary storage battery VBAT2, a first switch circuit, a second switch circuit, a first charging control circuit, a detection control circuit, a second charging control circuit, a first control circuit and a second control circuit; the detection input end of the controller is connected with the detection output end of the detection control circuit, the controller is in communication connection with the remote monitoring center through the mobile communication module, so that the electric power monitoring device can continuously obtain stable working power consumption, the data of the electric power monitoring device can be continuously uploaded, and the warning information is timely uploaded when the mains supply fails, so that the maintenance is timely facilitated.

Description

Electric power direct current power supply control system
Technical Field
The present invention relates to a control system, and more particularly, to a power supply control system.
Background
Various low-voltage direct-current devices exist in the power system and are used for supplying power to power equipment monitoring devices (such as various sensors), data processing devices (such as a processor and a single chip microcomputer) and the like, and in order to guarantee the stable operation of the power system, various monitoring data need to be uploaded by the processor devices in real time during the detection period of the power equipment, so that the stability and the operation of the power system are guaranteed.
When power is supplied to direct current of a power equipment monitoring device and the like, the condition that mains supply is unstable often exists, so that the monitoring device and the like cannot work continuously and stably, and a power data terminal is caused.
Therefore, in order to solve the above technical problems, a new technical means is continuously proposed to solve the above problems.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an electric power dc supply control system, which uses a redundant storage battery module to cooperate with a utility power to supply power when supplying power to dc devices such as an electric power monitoring device, so as to ensure that the electric power monitoring device can continuously obtain stable working power consumption, ensure that data of the electric power monitoring device can be continuously uploaded, and upload warning information in time when the utility power supply fails, thereby facilitating maintenance and inspection in time.
The invention provides an electric power direct current power supply control system, which comprises a main power supply module, a standby power supply module, a controller, a mobile communication module and a remote monitoring center, wherein the main power supply module is connected with the standby power supply module;
the main power supply module is used for converting commercial power into direct current and supplying power to a load;
the standby power supply module comprises a main storage battery VBAT1, an auxiliary storage battery VBAT2, a first switch circuit, a second switch circuit, a first charging control circuit, a detection control circuit, a second charging control circuit, a first control circuit and a second control circuit;
the positive electrode of the main storage battery VBAT1 is connected with the input end of a first switching circuit, and the second output end of the first switching circuit supplies power to a load;
the positive electrode of the secondary battery VBAT2 is connected with the input end of a second switching circuit, and the output end of the second switching circuit supplies power to a load;
the first control circuit receives a control signal output by the detection control circuit to control the on and off of the first switch circuit, and is also used for detecting the electric quantity state of the main storage battery VBAT1 and controlling the first switch circuit to be switched off when the electric quantity of the main storage battery VBAT1 is lower than a set value;
the control end of the second control circuit is connected to the first output end of the first switch circuit and controls the second switch circuit to be conducted when the first switch circuit is powered off;
the first charging control circuit charges the main storage battery VBAT1, and the second charging control circuit charges the auxiliary storage battery; the control ends of the first charging control circuit and the second charging control circuit are connected with the controller;
the detection input end of the controller is connected with the detection output end of the detection control circuit, and the controller is in communication connection with the remote monitoring center through the mobile communication module.
Further, the first switch circuit comprises a resistor R1, an NMOS transistor M1 and a diode D1;
one end of the resistor R1 is used as an input end of the first switch circuit, the other end of the resistor R1 is connected with the drain of the NMOS transistor M1, the source of the NMOS transistor M1 is connected with the anode of the diode D1, the cathode of the diode D1 is used as a second output end of the first switch circuit, the source of the NMOS transistor M1 is used as a first output end of the first switch circuit, and the gate of the NMOS transistor M1 is used as a control end of the first switch circuit and connected with a control output end of the first control circuit.
Further, the first control circuit comprises a resistor R5, a resistor R6, a resistor R2, a resistor R3, a resistor R4, a resistor R7, a resistor R11, a resistor R10, a resistor R12, a Zener diode ZD1, a thyristor Q1, a triode Q5, a triode Q4, a triode Q3 and a triode Q6; wherein, the triode Q6 is a P-type triode;
one end of the resistor R5 is connected to the positive electrode of the main storage battery VBAT1, and the other end of the resistor R5 is grounded through the resistor R6;
one end of the resistor R2 is connected to the drain of the NMOS transistor M1, the other end of the resistor R2 is connected to the positive electrode of the thyristor Q1, the negative electrode of the thyristor Q1 is connected to the gate of the NMOS transistor M1 through the resistor R3 and the resistor R7 in series, the gate of the NMOS transistor M1 is connected to the emitter of the transistor Q6, the collector of the transistor Q6 is grounded, the base of the transistor Q6 is connected to the common connection point of the resistor R3 and the resistor R7, the collector of the transistor Q3 is connected to the base of the transistor Q6, the emitter of the transistor Q6 is grounded, the base of the transistor Q6 is connected to the positive electrode of the diode D6 through the resistor R6, the negative electrode of the diode D6 is connected to the negative electrode of the thyristor Q6, the positive electrode of the diode D6 is connected to the emitter of the transistor Q6, the collector of the transistor Q6 is connected to the first output terminal of the first switch circuit, the base of the transistor Q36, the common connection point of the resistor R11 and the resistor R12 is connected with the collector of the triode Q5, the emitter of the triode Q5 is grounded, the base of the triode Q5 is connected with the anode of the Zener diode ZD1, and the cathode of the Zener diode ZD1 is connected with the common connection point of the resistor R5 and the resistor R6;
the collector of the triode Q2 is connected to the common connection point of the resistor R5 and the resistor R6, the emitter of the triode Q2 is connected to the control electrode of the controllable silicon Q1, the base of the triode Q2 is connected with one end of the resistor R4, and the other end of the resistor R4 is used as the control input end of the first control circuit.
Further, the detection control circuit comprises a resistor R17, a resistor R18, a resistor R19, a resistor R20, an optocoupler G1, a diode D5, a P-type triode Q9 and a triode Q10;
the base electrode of the triode Q9 is connected to the output end VG of the commercial power direct current power supply module through a resistor R17; the collector of the transistor Q9 outputs a control signal to the transistor Q2 through the resistor R4; an emitter of the triode Q9 is connected to the main storage battery VBAT1 through a resistor R18, a base of the triode Q10 is connected to an emitter of the triode Q9 through a resistor R19, a collector of the triode Q10 is connected to the anode of the main storage battery VBAT1 through a resistor R20, an emitter of the triode Q10 outputs a control signal to a base of the triode Q4, a collector of the triode Q9 is connected with the anode of a light emitting diode of the optocoupler G1, the cathode of the light emitting diode of the optocoupler G1 is grounded, a collector of a phototriode of the optocoupler G1 is connected with the cathode of a diode D5, the anode of the diode D5 is connected with a controller, and an emitter of the phototriode of the optocoupler G.
Further, the second switch circuit comprises a resistor R15, a PMOS tube M2 and a diode D3;
one end of the resistor R15 is used as an input end of the second switch circuit, the other end of the resistor R15 is connected with a source electrode of the PMOS tube M2, a drain electrode of the PMOS tube M2 is connected with an anode of the diode D3, a cathode of the diode D3 is used as an output end of the second switch circuit, and a grid electrode of the PMOS tube M2 is used as a control end of the second switch circuit and is connected with a control output end of the second control circuit.
Further, the second control circuit comprises a resistor R8, a resistor R9, a transistor Q7, a transistor Q8, a resistor R13, a resistor R16 and a resistor R14; wherein, the triode Q7 is a P-type triode;
one end of a resistor R8 is connected to a first output end of the first switch circuit, the other end of the resistor R8 is grounded through a resistor R9, a common connection point of the resistor R8 and the resistor R9 is connected to the anode of a diode D4, the cathode of a diode D4 is connected to the base of a triode Q7, the emitter of the triode Q7 is connected to the anode of the secondary battery VBAT2 through a resistor R16, the collector of the triode Q7 is connected to the base of a triode Q8 through a resistor R13, the collector of the triode Q8 is connected to the anode of the secondary battery VBAT2 through a resistor R14, the emitter of the triode Q8 is connected to the gate of an NMOS transistor M2, the base of the triode Q7 is connected to one end of a resistor R21, and the other end of the resistor R21 is connected to.
Further, the commercial power supply module comprises a rectifying circuit, a filter circuit and a voltage stabilizing circuit;
the input end of the rectifying circuit is connected with a mains supply, the output end of the rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the voltage stabilizing circuit, and the output end of the voltage stabilizing circuit supplies power to a load;
the output end of the filter circuit is also connected with the power supply ends of the first charging control circuit and the second charging control circuit through a voltage limiting resistor.
Further, the first charging control circuit and the second charging control circuit are both a CN3763 chip and its peripheral circuits.
Further, the remote monitoring center comprises a monitoring server, a touch display and an alarm;
the monitoring server is in communication connection with the touch display, the monitoring server is connected with the alarm, and the monitoring server is in communication connection with the controller through the mobile communication module.
Further, the mobile communication module is a 4G module or a 5G module.
The invention has the beneficial effects that: according to the invention, when power is supplied to direct-current equipment such as a power monitoring device and the like, the redundant storage battery module is adopted to be matched with mains supply for supplying power, so that the power monitoring device can be ensured to continuously obtain stable working power consumption, the data of the power monitoring device can be ensured to be continuously uploaded, and the alarm information is uploaded in time when the mains supply fails, thereby being beneficial to maintenance and inspection in time.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a standby power module of the present invention.
FIG. 3 is a schematic diagram of a detection control circuit of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings of the specification:
the invention provides an electric power direct current power supply control system, which comprises a main power supply module, a standby power supply module, a controller, a mobile communication module and a remote monitoring center, wherein the main power supply module is connected with the standby power supply module;
the main power supply module is used for converting commercial power into direct current and supplying power to a load;
the standby power supply module comprises a main storage battery VBAT1, an auxiliary storage battery VBAT2, a first switch circuit, a second switch circuit, a first charging control circuit, a detection control circuit, a second charging control circuit, a first control circuit and a second control circuit;
the positive electrode of the main storage battery VBAT1 is connected with the input end of a first switching circuit, and the second output end of the first switching circuit supplies power to a load;
the positive electrode of the secondary battery VBAT2 is connected with the input end of a second switching circuit, and the output end of the second switching circuit supplies power to a load;
the first control circuit receives a control signal output by the detection control circuit to control the on and off of the first switch circuit, and is also used for detecting the electric quantity state of the main storage battery VBAT1 and controlling the first switch circuit to be switched off when the electric quantity of the main storage battery VBAT1 is lower than a set value;
the control end of the second control circuit is connected to the first output end of the first switch circuit and controls the second switch circuit to be conducted when the first switch circuit is powered off;
the first charging control circuit charges the main storage battery VBAT1, and the second charging control circuit charges the auxiliary storage battery; the control ends of the first charging control circuit and the second charging control circuit are connected with the controller;
the detection input end of the controller is connected with the detection output end of the detection control circuit, and the controller is in communication connection with the remote monitoring center through the mobile communication module; the remote monitoring center comprises a monitoring server, a touch display and an alarm;
the monitoring server is in communication connection with the touch display, the monitoring server is connected with the alarm, and the monitoring server is in communication connection with the controller through the mobile communication module.
The mobile communication module is a 4G module or a 5G module; first charge control circuit and second charge control circuit are CN3763 chip and peripheral circuit thereof, the controller adopts current singlechip, for example STM32 series singlechip, through above-mentioned structure, when the power supply to direct current equipment such as electric power monitoring device, adopt redundant battery module and commercial power cooperation to supply power, can ensure that electric power monitoring device can continuously obtain stable working power consumption, ensure that electric power monitoring device's data can continuously upload, in addition in time upload when commercial power supply has the trouble and report an emergency and ask for help in time to maintain and examine.
In this embodiment, the first switch circuit includes a resistor R1, an NMOS transistor M1, and a diode D1;
one end of the resistor R1 is used as an input end of the first switch circuit, the other end of the resistor R1 is connected with a drain electrode of an NMOS tube M1, a source electrode of the NMOS tube M1 is connected with an anode of a diode D1, a cathode of a diode D1 is used as a second output end of the first switch circuit, a source electrode of an NMOS tube M1 is used as a first output end of the first switch circuit, a grid electrode of the NMOS tube M1 is used as a control end of the first switch circuit and is connected with a control output end of the first control circuit, and power supply of the main storage battery can be controlled through the structure.
In this embodiment, the first control circuit includes a resistor R5, a resistor R6, a resistor R2, a resistor R3, a resistor R4, a resistor R7, a resistor R11, a resistor R10, a resistor R12, a zener diode ZD1, a thyristor Q1, a transistor Q5, a transistor Q4, a transistor Q3, and a transistor Q6; wherein, the triode Q6 is a P-type triode;
one end of the resistor R5 is connected to the positive electrode of the main storage battery VBAT1, and the other end of the resistor R5 is grounded through the resistor R6;
one end of the resistor R2 is connected to the drain of the NMOS transistor M1, the other end of the resistor R2 is connected to the positive electrode of the thyristor Q1, the negative electrode of the thyristor Q1 is connected to the gate of the NMOS transistor M1 through the resistor R3 and the resistor R7 in series, the gate of the NMOS transistor M1 is connected to the emitter of the transistor Q6, the collector of the transistor Q6 is grounded, the base of the transistor Q6 is connected to the common connection point of the resistor R3 and the resistor R7, the collector of the transistor Q3 is connected to the base of the transistor Q6, the emitter of the transistor Q6 is grounded, the base of the transistor Q6 is connected to the positive electrode of the diode D6 through the resistor R6, the negative electrode of the diode D6 is connected to the negative electrode of the thyristor Q6, the positive electrode of the diode D6 is connected to the emitter of the transistor Q6, the collector of the transistor Q6 is connected to the first output terminal of the first switch circuit, the base of the transistor Q36, the common connection point of the resistor R11 and the resistor R12 is connected with the collector of the triode Q5, the emitter of the triode Q5 is grounded, the base of the triode Q5 is connected with the anode of the Zener diode ZD1, and the cathode of the Zener diode ZD1 is connected with the common connection point of the resistor R5 and the resistor R6;
the collector of the triode Q2 is connected with the common connection point of the resistor R5 and the resistor R6, the emitter of the triode Q2 is connected with the control electrode of the controlled silicon Q1, the base of the triode Q2 is connected with one end of the resistor R4, the other end of the resistor R4 is used as the control input end of the first control circuit, and a trigger control signal is given out to enable the triode Q2 to be conducted after the fact that the power failure of a main power supply line where commercial power is located is detected; through above-mentioned structure, can trigger main battery fast and enter the power supply state on the one hand, when main battery voltage is less than the setting value (the battery is discharged the back residual capacity and is low promptly), can turn off NMOS pipe M1 fast moreover, be that vice battery enters into the power supply state fast.
In this embodiment, the detection control circuit includes a resistor R17, a resistor R18, a resistor R19, a resistor R20, an optocoupler G1, a diode D5, a P-type triode Q9, and a triode Q10;
the base electrode of the triode Q9 is connected to the output end VG of the commercial power direct current power supply module through a resistor R17; the collector of the transistor Q9 outputs a control signal to the transistor Q2 through the resistor R4; an emitter of the triode Q9 is connected to the main storage battery VBAT1 through a resistor R18, a base of the triode Q10 is connected to an emitter of the triode Q9 through a resistor R19, a collector of the triode Q10 is connected to the anode of the main storage battery VBAT1 through a resistor R20, an emitter of the triode Q10 outputs a control signal to a base of the triode Q4, a collector of the triode Q9 is connected with the anode of a light emitting diode of the optocoupler G1, the cathode of the light emitting diode of the optocoupler G1 is grounded, a collector of a phototriode of the optocoupler G1 is connected with the cathode of a diode D5, the anode of the diode D5 is connected with a controller, and an emitter of the phototriode of the optocoupler G.
In this embodiment, the second switch circuit includes a resistor R15, a PMOS transistor M2, and a diode D3;
one end of the resistor R15 is used as an input end of the second switch circuit, the other end of the resistor R15 is connected with a source electrode of the PMOS tube M2, a drain electrode of the PMOS tube M2 is connected with an anode of the diode D3, a cathode of the diode D3 is used as an output end of the second switch circuit, and a grid electrode of the PMOS tube M2 is used as a control end of the second switch circuit and is connected with a control output end of the second control circuit.
The second control circuit comprises a resistor R8, a resistor R9, a triode Q7, a triode Q8, a resistor R13, a resistor R16 and a resistor R14; wherein, the triode Q7 is a P-type triode;
one end of a resistor R8 is connected to a first output end of the first switch circuit, the other end of the resistor R8 is grounded through a resistor R9, a common connection point of the resistor R8 and the resistor R9 is connected to the anode of a diode D4, the cathode of a diode D4 is connected to the base of a triode Q7, the emitter of the triode Q7 is connected to the anode of the secondary battery VBAT2 through a resistor R16, the collector of the triode Q7 is connected to the base of a triode Q8 through a resistor R13, the collector of the triode Q8 is connected to the anode of the secondary battery VBAT2 through a resistor R14, the emitter of the triode Q8 is connected to the gate of an NMOS transistor M2, the base of the triode Q7 is connected to one end of a resistor R21, and the other end of the resistor R21 is connected to.
Setting the resistance values of the resistor R7 and the resistor R18, when a main power supply line (mains supply) is normal, the voltage of an emitter of the triode Q9 is smaller than the base voltage, the triode Q9 is cut off, the triode Q2 does not act, and at the moment, the triode Q10 is conducted;
when the main power supply line is in fault outage, the emitter and the base of the triode Q9 are reversely biased and conducted, at the moment, the optocoupler G1 is also conducted, a pin of the controller connected with the anode of the diode D5 is set to be at a low level, and the controller identifies the low level, generates alarm information of the fault of the mains supply module and uploads the alarm information;
at the moment, the triode Q2 is conducted, the control electrode of the controlled silicon Q1 is triggered, and the controlled silicon Q1 is conducted, so that the NMOS tube M1 is conducted, and power is supplied by the main storage battery; a sampling circuit is formed by a resistor R5 and a resistor R6, when the voltage of the main storage battery is greater than a set value, the set value is determined by a Zener diode ZD1, the Zener diode ZD1 is conducted, a triode Q5 is conducted, and a triode Q4 is cut off; when the voltage of the main storage battery is gradually reduced along with the power supply of the main storage battery, and the voltage of the main storage battery is smaller than a set value, which indicates that the electric quantity of the main storage battery is too low, the zener diode ZD1 is cut off, the triode Q5 is cut off, the triode Q4 is turned on, the triode Q4 is turned on, on one hand, a reverse bias voltage is applied to the cathode of the thyristor Q1 through the diode D2, the thyristor is cut off, on the other hand, the triode Q3 is turned on along with the conduction of the triode Q4, the conduction of the triode Q3 has 2-aspect effect, on the other hand, the voltage is prevented from being further applied to the grid of the NMOS switch M1 through the diode D2, the resistor R3 and the resistor R7, more importantly, the conduction of the triode Q3 pulls down the base voltage of the triode Q6, because the grid of the NMOS transistor M1 has a grid capacitor, and after the thyristor Q1 is cut, therefore, the triode Q6 can accelerate the discharge of the grid capacitor of the M1, accelerate the cut-off of the M1 and accelerate the access of the auxiliary storage battery to supply power.
The resistor R8 and the resistor R9 are used for sampling power supply of the main storage battery, when the NMOS tube M1 is conducted, the base voltage of the triode Q7 is larger than the emitter voltage, the triode Q7 is cut off, the triode Q8 is cut off, the NMOS tube Q2 is cut off, after the NMOS tube M1 is cut off, the base of the triode Q7 is de-energized and reversely biased, the triode Q7 is conducted, the triode Q8 is conducted along with the conduction of the triode Q8, the NMOS tube M2 is conducted, and therefore the auxiliary storage battery enters a power supply state.
When the mains supply main circuit recovers power supply, namely voltage VG is output, the triode Q9 is turned off again, at the moment, the triode Q10 is turned on, so that a high level is input into the triode Q4, the triode Q4 is turned on, at the moment, the power supply of the main storage battery is cut off rapidly according to the M1 turn-off principle, and the voltage VG is loaded to the base electrode of the triode Q7 at the same time, so that the triode Q7 is kept in a cut-off state, and the auxiliary storage battery M2 cannot supply power.
And in the working process, the first charging control circuit and the second charging control circuit are used for charging when the voltage of the corresponding storage battery is lower than a set value, corresponding information is sent to the controller when the first control circuit and the second control circuit do not finish charging once, the controller counts the charging and discharging times and sends the counted charging and discharging times to the monitoring center, and the monitoring server estimates the service life of the storage battery and displays the service life of the storage battery through the touch display.
In this embodiment, the utility power supply module includes a rectification circuit, a filter circuit, and a voltage stabilizing circuit;
the input end of the rectifying circuit is connected with a mains supply, the output end of the rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit supplies power to a load, and all the circuits adopt the existing circuits, wherein the selection of the voltage stabilizing circuit is selected according to the working voltage of an electric device;
the output end of the filter circuit is also connected with the power supply ends of the first charging control circuit and the second charging control circuit through a voltage limiting resistor.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. An electric power direct current supply control system characterized in that: the system comprises a main power supply module, a standby power supply module, a controller, a mobile communication module and a remote monitoring center;
the main power supply module is used for converting commercial power into direct current and supplying power to a load;
the standby power supply module comprises a main storage battery VBAT1, an auxiliary storage battery VBAT2, a first switch circuit, a second switch circuit, a first charging control circuit, a detection control circuit, a second charging control circuit, a first control circuit and a second control circuit;
the positive electrode of the main storage battery VBAT1 is connected with the input end of a first switching circuit, and the second output end of the first switching circuit supplies power to a load;
the positive electrode of the secondary battery VBAT2 is connected with the input end of a second switching circuit, and the output end of the second switching circuit supplies power to a load;
the first control circuit receives a control signal output by the detection control circuit to control the on and off of the first switch circuit, and is also used for detecting the electric quantity state of the main storage battery VBAT1 and controlling the first switch circuit to be switched off when the electric quantity of the main storage battery VBAT1 is lower than a set value;
the control end of the second control circuit is connected to the first output end of the first switch circuit and controls the second switch circuit to be conducted when the first switch circuit is powered off;
the first charging control circuit charges the main storage battery VBAT1, and the second charging control circuit charges the auxiliary storage battery; the control ends of the first charging control circuit and the second charging control circuit are connected with the controller;
the detection input end of the controller is connected with the detection output end of the detection control circuit, and the controller is in communication connection with the remote monitoring center through the mobile communication module.
2. The electric power direct-current supply control system according to claim 1, characterized in that: the first switch circuit comprises a resistor R1, an NMOS transistor M1 and a diode D1;
one end of the resistor R1 is used as an input end of the first switch circuit, the other end of the resistor R1 is connected with the drain of the NMOS transistor M1, the source of the NMOS transistor M1 is connected with the anode of the diode D1, the cathode of the diode D1 is used as a second output end of the first switch circuit, the source of the NMOS transistor M1 is used as a first output end of the first switch circuit, and the gate of the NMOS transistor M1 is used as a control end of the first switch circuit and connected with a control output end of the first control circuit.
3. The electric dc power supply control system according to claim 2, wherein: the first control circuit comprises a resistor R5, a resistor R6, a resistor R2, a resistor R3, a resistor R4, a resistor R7, a resistor R11, a resistor R10, a resistor R12, a Zener diode ZD1, a thyristor Q1, a triode Q5, a triode Q4, a triode Q3 and a triode Q6; wherein, the triode Q6 is a P-type triode;
one end of the resistor R5 is connected to the positive electrode of the main storage battery VBAT1, and the other end of the resistor R5 is grounded through the resistor R6;
one end of the resistor R2 is connected to the drain of the NMOS transistor M1, the other end of the resistor R2 is connected to the positive electrode of the thyristor Q1, the negative electrode of the thyristor Q1 is connected to the gate of the NMOS transistor M1 through the resistor R3 and the resistor R7 in series, the gate of the NMOS transistor M1 is connected to the emitter of the transistor Q6, the collector of the transistor Q6 is grounded, the base of the transistor Q6 is connected to the common connection point of the resistor R3 and the resistor R7, the collector of the transistor Q3 is connected to the base of the transistor Q6, the emitter of the transistor Q6 is grounded, the base of the transistor Q6 is connected to the positive electrode of the diode D6 through the resistor R6, the negative electrode of the diode D6 is connected to the negative electrode of the thyristor Q6, the positive electrode of the diode D6 is connected to the emitter of the transistor Q6, the collector of the transistor Q6 is connected to the first output terminal of the first switch circuit, the base of the transistor Q36, the common connection point of the resistor R11 and the resistor R12 is connected with the collector of the triode Q5, the emitter of the triode Q5 is grounded, the base of the triode Q5 is connected with the anode of the Zener diode ZD1, and the cathode of the Zener diode ZD1 is connected with the common connection point of the resistor R5 and the resistor R6;
the collector of the triode Q2 is connected to the common connection point of the resistor R5 and the resistor R6, the emitter of the triode Q2 is connected to the control electrode of the controllable silicon Q1, the base of the triode Q2 is connected with one end of the resistor R4, and the other end of the resistor R4 is used as the control input end of the first control circuit.
4. The electric dc power supply control system according to claim 3, wherein: the detection control circuit comprises a resistor R17, a resistor R18, a resistor R19, a resistor R20, an optocoupler G1, a diode D5, a P-type triode Q9 and a triode Q10;
the base electrode of the triode Q9 is connected to the output end VG of the commercial power direct current power supply module through a resistor R17; the collector of the transistor Q9 outputs a control signal to the transistor Q2 through the resistor R4; an emitter of the triode Q9 is connected to the main storage battery VBAT1 through a resistor R18, a base of the triode Q10 is connected to an emitter of the triode Q9 through a resistor R19, a collector of the triode Q10 is connected to the anode of the main storage battery VBAT1 through a resistor R20, an emitter of the triode Q10 outputs a control signal to a base of the triode Q4, a collector of the triode Q9 is connected with the anode of a light emitting diode of the optocoupler G1, the cathode of the light emitting diode of the optocoupler G1 is grounded, a collector of a phototriode of the optocoupler G1 is connected with the cathode of a diode D5, the anode of the diode D5 is connected with a controller, and an emitter of the phototriode of the optocoupler G.
5. The electric power direct-current supply control system according to claim 1, characterized in that: the second switch circuit comprises a resistor R15, a PMOS tube M2 and a diode D3;
one end of the resistor R15 is used as an input end of the second switch circuit, the other end of the resistor R15 is connected with a source electrode of the PMOS tube M2, a drain electrode of the PMOS tube M2 is connected with an anode of the diode D3, a cathode of the diode D3 is used as an output end of the second switch circuit, and a grid electrode of the PMOS tube M2 is used as a control end of the second switch circuit and is connected with a control output end of the second control circuit.
6. The electric dc power supply control system according to claim 5, wherein: the second control circuit comprises a resistor R8, a resistor R9, a triode Q7, a triode Q8, a resistor R13, a resistor R16 and a resistor R14; wherein, the triode Q7 is a P-type triode;
one end of a resistor R8 is connected to a first output end of the first switch circuit, the other end of the resistor R8 is grounded through a resistor R9, a common connection point of the resistor R8 and the resistor R9 is connected to the anode of a diode D4, the cathode of a diode D4 is connected to the base of a triode Q7, the emitter of the triode Q7 is connected to the anode of the secondary battery VBAT2 through a resistor R16, the collector of the triode Q7 is connected to the base of a triode Q8 through a resistor R13, the collector of the triode Q8 is connected to the anode of the secondary battery VBAT2 through a resistor R14, the emitter of the triode Q8 is connected to the gate of an NMOS transistor M2, the base of the triode Q7 is connected to one end of a resistor R21, and the other end of the resistor R21 is connected to.
7. The electric power direct-current supply control system according to claim 1, characterized in that: the commercial power supply module comprises a rectifying circuit, a filter circuit and a voltage stabilizing circuit;
the input end of the rectifying circuit is connected with a mains supply, the output end of the rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the voltage stabilizing circuit, and the output end of the voltage stabilizing circuit supplies power to a load;
the output end of the filter circuit is also connected with the power supply ends of the first charging control circuit and the second charging control circuit through a voltage limiting resistor.
8. The electric power direct-current supply control system according to claim 1, characterized in that: the first charging control circuit and the second charging control circuit are both a CN3763 chip and peripheral circuits thereof.
9. The electric power direct-current supply control system according to claim 1, characterized in that: the remote monitoring center comprises a monitoring server, a touch display and an alarm;
the monitoring server is in communication connection with the touch display, the monitoring server is connected with the alarm, and the monitoring server is in communication connection with the controller through the mobile communication module.
10. The electric power direct-current supply control system according to claim 1, characterized in that: the mobile communication module is a 4G module or a 5G module.
CN202011365752.XA 2020-11-28 2020-11-28 Electric power direct current power supply control system Active CN112421763B (en)

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