CN114142616A - Electric energy monitoring device with power failure alarm function - Google Patents

Electric energy monitoring device with power failure alarm function Download PDF

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Publication number
CN114142616A
CN114142616A CN202111468633.1A CN202111468633A CN114142616A CN 114142616 A CN114142616 A CN 114142616A CN 202111468633 A CN202111468633 A CN 202111468633A CN 114142616 A CN114142616 A CN 114142616A
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China
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module
electric energy
voltage
lithium battery
diode
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CN202111468633.1A
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Chinese (zh)
Inventor
张海霞
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Suzhou Liankong Intelligent Technology Co ltd
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Suzhou Liankong Intelligent Technology Co ltd
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Priority to CN202111468633.1A priority Critical patent/CN114142616A/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
    • 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
    • H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • 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
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • 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
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or 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
    • Y04S20/12—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
    • Y04S20/248—UPS systems or standby or emergency generators

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

Abstract

The invention discloses an electric energy monitoring device with a power failure alarm function, which comprises a charge-discharge module, wherein the charge-discharge module is connected with an AC-DC module, a lithium battery module and a voltage stabilizing module, the voltage stabilizing module is connected with an MCU module, the MCU module is connected with an electric energy detection module, the AC-DC module and the electric energy detection module are respectively connected with three phases A, B and C in a three-phase circuit and a zero line N, a charge-discharge circuit is arranged in the charge-discharge module, and an alternating voltage detection circuit is arranged in the electric energy detection module. According to the electric energy monitoring device with the power failure alarm function, the lithium battery is placed inside, after the alternating current is powered off, the lithium battery can continue to supply power to internal electronic components, after the internal MCU detects the power failure, the event is reported in time through the communication module, the electric energy monitoring device with the power failure alarm function has the power failure alarm function, and a background can easily distinguish the two conditions by matching with a proper big data strategy without field investigation.

Description

Electric energy monitoring device with power failure alarm function
Technical Field
The invention relates to the field of power monitoring, in particular to an electric energy monitoring device with a power failure alarm function.
Background
The electric energy monitoring device is a supporting device for monitoring electric power, along with the fact that the policy of loan issuance for manufacturing enterprises by various banks is more and more open, how to ensure that the loan really plays a role in assisting the manufacturing development is indispensable for effective supervision, the benefit of the manufacturing enterprises is good or bad, and the electric energy monitoring device is often related to the power consumption of the manufacturing enterprises, so that at present, partial banks adopt the electric energy monitoring device to monitor the loan electricity consumption of the manufacturing enterprises, the electric energy monitoring device needs to have a communication function, and simultaneously has the characteristics of simple disassembly and assembly, high layout adaptability, random increase and decrease of monitoring number and the like, the communication function can ensure the real-time performance of monitoring data, the disassembly and assembly are simple because the device only monitors the electric energy of the enterprises in the loan period, the electric energy monitoring device needs to be disassembled after the loan period and the device needs to be recycled, and the layout adaptability is high because the site links of each company are different, the installation difficulty degree is also different, and the monitoring number can be increased and decreased at random because the manufacturing enterprise is of many kinds, and power load is also different, and the object that needs to be monitored is also different, and along with the continuous development of science and technology, people also are higher and higher to electric energy monitoring devices's manufacturing process requirement.
The existing electric energy monitoring device has certain defects when in use, most of the existing standard electric energy monitoring devices do not have a power failure alarm function, if a bank finds that the device is disconnected in a data background, the bank cannot judge whether the device is in failure or the system is powered off, the bank possibly needs to send a specially-assigned person to check the device at home, time and labor are wasted, certain adverse effects are brought to the use process of people, and therefore the electric energy monitoring device with the power failure alarm function is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the electric energy monitoring device with the power failure alarm function, the lithium battery is arranged in the electric energy monitoring device, after the alternating current power failure, the lithium battery can continuously supply power to internal electronic components, after the internal MCU detects the power failure, the event is reported in time through the communication module, the electric energy monitoring device has the power failure alarm function, and by matching with a proper big data strategy, a background can easily distinguish the two conditions without field investigation, so that the problem in the background technology can be effectively solved.
(II) technical scheme
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an electric energy monitoring devices with power failure alarming function, includes the charge-discharge module, the charge-discharge module is connected with AC-DC module, lithium cell module and voltage stabilizing module, voltage stabilizing module is connected with the MCU module, the MCU module is connected with the electric energy detection module, AC-DC module and electric energy detection module are connected three-phase A, B and C and zero line N in the three-phase circuit respectively.
As an optimal technical scheme of this application, the inside charge-discharge circuit that is provided with of charge-discharge module, the inside alternating voltage detection circuitry that is provided with of electric energy detection module, when the supply voltage is normal, the lithium cell module charges, can not discharge after being full of, alternating voltage detection circuitry real-time detection electric wire netting voltage, the MCU module passes through communication module and uploads the data center with the data that detect, the lithium cell module provides the power for electronic components.
As an optimal technical scheme of this application, alternating voltage detection circuitry detects when alternating voltage falls the power down for 0V promptly, lithium cell module can give the power supply of inside electronic components through discharging for even do not have the alternating current, alternating voltage detection circuitry still works, detects voltage and falls the power down after for 0V promptly, electric energy detection module reports the power down incident.
As a preferred technical solution in the present application, the charging and discharging circuit includes a lithium battery B100, a lithium battery protection chip U108, a power supply AC-DC, a diode D100, a diode D101, a diode D110, a diode D111, a resistor R100, and a resistor R105.
As a preferred technical solution in the present application, when the AC power is normal, 5V is a DC voltage converted from a power AC-DC, the 5V generates a 4.8V voltage through a diode D100 after being established, the 4.8V is supplied to the back-end LDO circuit again to generate a stable 3.3V as VCC, the 5V generates a maximum 4.3V voltage through another channel, i.e., the diode D101, the diode D110 and the resistor R100, the 4.3V voltage is the highest voltage of the lithium battery, the 4.3V establishing process is the lithium battery charging process, the anode of the diode D111 is 4.3V, the cathode of the diode D111 is 4.8V, the diode D111 is in a reverse cut-off state, and at this time, the lithium battery has no discharging path, i.e., the lithium battery is only charged and is not discharged under the condition that the AC voltage is normal.
As a preferred technical solution in the present application, when the ac voltage is 0V, i.e. when the ac voltage is lost, the voltage of 5V is reduced to 0V, the diode D100 has no current, the circuit of the diode D101, the diode D110, and the resistor R100 is not charging the lithium battery B100, and the lithium battery B100 discharges the previously full charge to the back end through the diode D111, i.e. the voltage of 4.8V is reduced to the voltage of the lithium battery minus the voltage drop of the diode D111, i.e. the voltage drops from 4.1V.
As a preferred technical solution of the present application, a current type voltage transformer, a VAP pin, a VAN pin, a plurality of sets of resistors, and two sets of capacitors are disposed inside the alternating voltage detection circuit.
(III) advantageous effects
Compared with the prior art, the invention provides an electric energy monitoring device with a power failure alarm function, which has the following beneficial effects: the power monitoring device with the power failure alarm function is internally provided with a lithium battery, after the alternating current is powered off, the lithium battery can continuously supply power to internal electronic components, after the internal MCU detects the power failure, the event is reported in time through the communication module, the power failure alarm function is realized, the appropriate big data strategy is matched, the background can easily distinguish the two conditions without on-site investigation, after the power monitoring device has the power failure alarm function, if a bank finds that the device is disconnected in the data background, the bank can preliminarily investigate whether the last communication data before the disconnection reports the power failure event, if the communication data has the reported power failure event, the background can not directly judge whether a power company cuts off or someone disconnects the power line of the device, but the background can easily distinguish the two conditions by matching the appropriate big data strategy, therefore, bank personnel do not need to go to the site for investigation, the whole electric energy monitoring device is simple in structure and convenient to operate, and the using effect is better than that of the traditional mode.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an electric energy monitoring device with a power failure alarm function according to the present invention.
Fig. 2 is a schematic structural diagram of a charging and discharging circuit in the electric energy monitoring device with the power failure alarm function according to the present invention.
Fig. 3 is a schematic structural diagram of an alternating voltage detection circuit in the electric energy monitoring device with the power failure alarm function according to the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. 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 invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1 to 3, an electric energy monitoring device with a power failure alarm function includes a charge-discharge module, the charge-discharge module is connected with an AC-DC module, a lithium battery module and a voltage stabilizing module, the voltage stabilizing module is connected with an MCU module, the MCU module is connected with an electric energy detection module, and the AC-DC module and the electric energy detection module are respectively connected with three phases A, B and C in a three-phase circuit and a zero line N.
The charging and discharging module is internally provided with a charging and discharging circuit, the electric energy detection module is internally provided with an alternating voltage detection circuit, when the power supply voltage is normal, the lithium battery module is charged and can not discharge after being fully charged, the alternating voltage detection circuit detects the voltage of a power grid in real time, the MCU module uploads the detected data to the electric energy detection module through the communication module, and the lithium battery module provides power for the electronic component.
When the alternating voltage detection circuit detects that the alternating voltage is 0V, namely power failure occurs, the lithium battery module can supply power to internal electronic components through discharging, so that the alternating voltage detection circuit still works even if no alternating current exists, and after the alternating voltage detection circuit detects that the voltage is 0V, namely power failure occurs, the power detection module reports the power failure event.
Example two:
on the basis of the first embodiment, as shown in fig. 1 to 3, an electric energy monitoring device with a power failure alarm function includes a charge-discharge module, the charge-discharge module is connected with an AC-DC module, a lithium battery module and a voltage stabilizing module, the voltage stabilizing module is connected with an MCU module, the MCU module is connected with an electric energy detection module, and the AC-DC module and the electric energy detection module are respectively connected with three phases A, B and C in a three-phase circuit and a zero line N.
The charging and discharging module is internally provided with a charging and discharging circuit, the electric energy detection module is internally provided with an alternating voltage detection circuit, when the power supply voltage is normal, the lithium battery module is charged and can not discharge after being fully charged, the alternating voltage detection circuit detects the voltage of a power grid in real time, the MCU module uploads the detected data to the electric energy detection module through the communication module, and the lithium battery module provides power for the electronic component.
The charging and discharging circuit comprises a lithium battery B100, a lithium battery protection chip U108, a power supply AC-DC, a diode D100, a diode D101, a diode D110, a diode D111, a resistor R100 and a resistor R105.
When the alternating current is normal, 5V is direct current voltage converted from a power supply AC-DC, 4.8V voltage is generated through a diode D100 after 5V is established, 4.8V is supplied to a rear-end LDO circuit to generate stable 3.3V serving as VCC, 5V can generate a maximum 4.3V voltage through another channel, namely the diode D101, the diode D110 and the resistor R100, the 4.3V voltage is the highest voltage of the lithium battery, the 4.3V establishing process is the lithium battery charging process, the anode of the diode D111 is 4.3V, the cathode of the diode D111 is 4.8V, the diode D111 is in a reverse cut-off state, and the lithium battery does not have a discharging path at the moment, namely the lithium battery is only charged and cannot be discharged under the condition that the alternating current voltage is normal.
When the alternating voltage is 0V, namely power failure occurs, 5V is reduced to 0V, no current exists in the diode D100, the circuit consisting of the diode D101, the diode D110 and the resistor R100 does not charge the lithium battery B100, the lithium battery B100 discharges the previously stored full electricity to the rear end through the diode D111, namely the voltage of 4.8V is reduced to the voltage of the lithium battery minus the voltage drop of the diode D111, namely the voltage drops from 4.1V.
Example three:
on the basis of the first embodiment and the second embodiment, as shown in fig. 1 to 3, an electric energy monitoring device with a power failure alarm function comprises a charge-discharge module, wherein the charge-discharge module is connected with an AC-DC module, a lithium battery module and a voltage stabilizing module, the voltage stabilizing module is connected with an MCU module, the MCU module is connected with an electric energy detection module, and the AC-DC module and the electric energy detection module are respectively connected with three phases A, B and C in a three-phase circuit and a zero line N.
The charging and discharging module is internally provided with a charging and discharging circuit, the electric energy detection module is internally provided with an alternating voltage detection circuit, when the power supply voltage is normal, the lithium battery module is charged and can not discharge after being fully charged, the alternating voltage detection circuit detects the voltage of a power grid in real time, the MCU module uploads the detected data to the electric energy detection module through the communication module, and the lithium battery module provides power for the electronic component.
The alternating voltage detection circuit is internally provided with a current type voltage transformer, a VAP pin, a VAN pin, a plurality of groups of resistors and two groups of capacitors.
The working principle is as follows: the invention comprises a charge-discharge module, a charge-discharge circuit is arranged in the charge-discharge module, an alternating voltage detection circuit is arranged in the electric energy detection module, a lithium battery is arranged in the electric energy detection module, after the alternating current is powered off, the internal electronic components can be continuously supplied with power through the lithium battery, after the internal MCU detects the power off, events are reported in time through the communication module, when the power supply voltage is normal, the lithium battery is charged, the alternating voltage detection circuit which cannot discharge after being filled with the electricity can always detect the power grid voltage in real time, when the alternating voltage is 0V, namely the power off, the lithium battery can supply power to the internal electronic components through discharging, even if the alternating current is not provided, the alternating voltage detection circuit still works, after the power off is detected to be 0V, the electric energy monitoring device reports the power off events, the charge-discharge circuit comprises a lithium battery B100, a lithium battery protection chip U108, a power supply AC-DC, a power supply, When the alternating current is normal, 5V is direct current voltage converted from a power supply AC-DC, after 5V is established, 4.8V voltage is generated through the diode D100, 4.8V is supplied to a back-end LDO circuit to generate stable 3.3V serving as VCC, 5V can pass through another channel, namely the diode D101, the diode D110 and the resistor R100, to generate a maximum 4.3V voltage, the 4.3V voltage is the highest voltage of the lithium battery, the 4.3V establishing process is the lithium battery charging process, the anode of the diode D111 is 4.3V, the cathode of the diode D111 is 4.8V, the diode D111 is in a reverse cut-off state, no discharging path exists at the moment, namely the lithium battery is only charged and can not be discharged under the condition that the alternating current voltage is normal, when the alternating current voltage is 0V, namely the power failure occurs, the 5V is reduced to 0V, the diode D100 has no current, the circuit of the diode D101, the diode D110 and the resistor R100 does not charge the lithium battery B100, the lithium battery B100 discharges the fully stored electricity to the rear end through the diode D111, namely the 4.8V voltage is reduced to the lithium battery voltage minus the tube voltage of the diode D111, namely the voltage is reduced from 4.1V, in the discharging process, the voltage of the rear end VCC adopts 3.3V, so in the process of reducing from 4.1V to 3.3V, as long as the capacity of the lithium battery is large enough, the continuous working time of the system can finish alternating current voltage detection, power failure judgment and reporting of a power failure event, the power failure detection function is possessed, the reason that the device is disconnected in a data background can be known, the circuit has important significance for effective supervision of a bank on a loan enterprise, and the validity of data is proved.
It is noted that, herein, relational terms such as first and second (a, b, etc.) 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 foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims (7)

1. The utility model provides an electric energy monitoring devices with power down alarming function, includes the charge-discharge module, its characterized in that: the charging and discharging module is connected with an AC-DC module, a lithium battery module and a voltage stabilizing module, the voltage stabilizing module is connected with an MCU module, the MCU module is connected with an electric energy detection module, and the AC-DC module and the electric energy detection module are respectively connected with three phases A, B and C in a three-phase circuit and a zero line N.
2. The electric energy monitoring device with the power failure alarm function according to claim 1, characterized in that: the charging and discharging module is internally provided with a charging and discharging circuit, the electric energy detection module is internally provided with an alternating voltage detection circuit, when the power supply voltage is normal, the lithium battery module is charged and can not discharge after being fully charged, the alternating voltage detection circuit detects the voltage of a power grid in real time, the MCU module uploads the detected data to the data center through the communication module, and the lithium battery module provides power for the electronic component.
3. The electric energy monitoring device with the power failure alarm function according to claim 2, characterized in that: when the alternating voltage detection circuit detects that the alternating voltage is 0V, namely power failure occurs, the lithium battery module can supply power to internal electronic components through discharging, so that the alternating voltage detection circuit still works even if alternating current does not exist, and after the alternating voltage detection circuit detects that the voltage is 0V, namely power failure occurs, the electric energy detection module reports the power failure event.
4. The electric energy monitoring device with the power failure alarm function according to claim 2, characterized in that: the charging and discharging circuit comprises a lithium battery B100, a lithium battery protection chip U108, a power supply AC-DC, a diode D100, a diode D101, a diode D110, a diode D111, a resistor R100 and a resistor R105.
5. The electric energy monitoring device with the power failure alarm function according to claim 4, characterized in that: when the alternating current is normal, 5V is a direct current voltage converted from a power supply AC-DC, 4.8V is generated by a diode D100 after the 5V is established, the 4.8V is supplied to a back-end LDO circuit again to generate stable 3.3V as VCC, the 5V can generate a maximum 4.3V through another channel, namely the diode D101, the diode D110 and the resistor R100, the 4.3V is the highest voltage of the lithium battery, the 4.3V establishing process is a lithium battery charging process, the anode of the diode D111 is 4.3V, the cathode is 4.8V, the diode D111 is in a reverse cut-off state, and the lithium battery has no discharging path at the moment, namely, the lithium battery is only charged and cannot be discharged under the condition that the alternating current voltage is normal.
6. The electric energy monitoring device with the power failure alarm function according to claim 4, characterized in that: when the alternating voltage is 0V, namely power failure occurs, the voltage of 5V is reduced to 0V, no current exists in the diode D100, the circuit consisting of the diode D101, the diode D110 and the resistor R100 does not charge the lithium battery B100, and the lithium battery B100 discharges the previously stored electricity to the rear end through the diode D111, namely the voltage of 4.8V is reduced to the voltage of the lithium battery minus the voltage drop of the diode D111, namely the voltage drops from 4.1V.
7. The electric energy monitoring device with the power failure alarm function according to claim 2, characterized in that: the alternating voltage detection circuit is internally provided with a current type voltage transformer, a VAP pin, a VAN pin, a plurality of groups of resistors and two groups of capacitors.
CN202111468633.1A 2021-12-03 2021-12-03 Electric energy monitoring device with power failure alarm function Pending CN114142616A (en)

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Application Number Priority Date Filing Date Title
CN202111468633.1A CN114142616A (en) 2021-12-03 2021-12-03 Electric energy monitoring device with power failure alarm function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111468633.1A CN114142616A (en) 2021-12-03 2021-12-03 Electric energy monitoring device with power failure alarm function

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Publication Number Publication Date
CN114142616A true CN114142616A (en) 2022-03-04

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CN202111468633.1A Pending CN114142616A (en) 2021-12-03 2021-12-03 Electric energy monitoring device with power failure alarm function

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