CN113394599A - Double-circuit intelligent charging socket and control circuit thereof - Google Patents

Abstract

The invention relates to a double-circuit intelligent charging socket and a control circuit thereof, and belongs to the technical field of charging sockets. The dustproof plug comprises an inner shell and an outer shell, wherein a surface sticker is arranged on the inner shell, a dustproof plug is arranged in a corresponding opening on the inner shell, a square hole is also formed in the inner shell, and a matched socket is arranged in the square hole; the back end of the inner shell is provided with a second circuit board; the front end of the second circuit board is provided with a first circuit board, the back end of the second circuit board is provided with a third circuit board, the second circuit board is connected with an antenna through a flat cable, the other side of the antenna is arranged on the shell, and the second circuit board is connected with a socket and a loudspeaker through a lead; the third circuit board is provided with an SIM card seat which is of a flip structure; the inner shell and the outer shell are connected and mounted, a cover plate is arranged on the outer shell, and an external plug is further arranged in a terminal corresponding to the second circuit board. The intelligent charging socket adopts an integrated structure and is matched with a control circuit of the integrated charging socket, so that intelligent functions of charging safety control, watt-hour metering, abnormal display and the like of the charging socket can be realized.

Description

Double-circuit intelligent charging socket and control circuit thereof

Technical Field

The invention relates to a double-circuit intelligent charging socket and a control circuit thereof, and belongs to the technical field of charging sockets.

Background

Under the prior art, most intelligent charging sockets have the following defects: 1. most of intelligent sockets sample the current of a charging output loop by adopting an alloy resistor, and are not isolated from a metering chip, so that the metering chip is easily damaged by impact current generated at the moment of charging an electric appliance; 2. the traditional intelligent socket does not support the replacement of the current card without detaching the shell, and is not beneficial to the later replacement of the current card by an operator; 3. most intelligent sockets cannot set common parameters through keys, and field debugging personnel need to set the parameters by means of additional equipment; 4. most smart jack installation openings are not compatible with 86 box openings and the constructor must open the openings again.

For example, chinese patent with patent publication number CN112874333A discloses an intelligent charging socket control circuit, including control module, power module, electric quantity metering module, circuit fault detection module, sensor detection module, IC card swiping module, communication module, voice broadcast module and trouble alarm module, control module includes control chip and power output control relay, power module includes electric bicycle charging power supply circuit and control circuit working power supply circuit, the normally open contact of power output control relay is established ties on electric bicycle charging power supply circuit's power output, sensor detection module includes smoke detection sensor, temperature and humidity detection sensor and temperature detection sensor, communication module includes wireless remote control module, infrared remote control module, WiFi communication module and wired communication module.

The intelligent charging socket of above-mentioned patent can realize intelligent charging control and danger and detect the alarm, and disclose corresponding if fault detection, the module of punching the card etc. schematic diagram, but do not disclose relevant concrete structure.

Therefore, to solve the above background problems, it is urgent to develop a two-way smart charging socket.

Disclosure of Invention

The present invention is directed to solve the above-mentioned problems, and an object of the present invention is to provide a dual-channel intelligent charging socket and a control circuit thereof, which are integrated and cooperate with the control circuit thereof to implement intelligent functions of charging safety control, electricity metering, abnormal display, etc. of the charging socket.

The purpose of the invention is realized as follows: a double-circuit intelligent charging socket comprises an inner shell and an outer shell, wherein a surface sticker is arranged on the inner shell, a dustproof plug is arranged in a corresponding hole in the inner shell, a square hole is further formed in the inner shell, and a matched socket is arranged in the square hole;

the back end of the inner shell is provided with a second circuit board;

the front end of the second circuit board is provided with a first circuit board, the back end of the second circuit board is provided with a third circuit board, the second circuit board is connected with an antenna through a flat cable, the other side of the antenna is installed on the inner shell, a wiring end of the antenna is connected with a female seat on the circuit board, and the second circuit board is also connected with a socket and a loudspeaker through a conducting wire;

the third circuit board is also provided with an SIM card seat which is of a flip structure;

the inner shell and the outer shell are connected and mounted, a cover plate is arranged on the outer shell, and an external plug is further arranged in a terminal corresponding to the second circuit board;

the second circuit board is also provided with a first nixie tube and a second nixie tube, and a first key and a second key are respectively arranged below the nixie tubes in a matching manner.

The first circuit board is installed on the second circuit board through a pin welding mode, and the third circuit board is electrically connected with the second circuit board through a pin plugging mode.

A control circuit of a double-path intelligent charging socket comprises a control module, wherein the control module is provided with a control chip circuit;

the control chip circuit adopts a microcontroller chip, and an I/O end of the microcontroller chip is connected with the card swiping module, the wireless communication module, the display module, the temperature measuring module, the 485 communication module, the key module, the power supply module, the voice module and the metering and output module.

The card swiping module is provided with a card swiping circuit;

the card swiping circuit comprises a radio frequency chip, a signal end of the radio frequency chip is connected with an I/O end of the control chip, and the radio frequency chip is used for carrying out data reading and writing operation on the user IC card.

The wireless communication module comprises a 4G wireless module circuit;

the 4G wireless module circuit comprises a 4G communication chip, a power supply chip and a data flow unit;

the data flow unit is provided with an SIM card seat or a patch ESIM card;

the I/O end of the 4G communication chip is connected with the I/O end of the microcontroller chip;

the 4G communication chip is in wireless communication with the cloud platform through a data flow packet provided by an external SIM card inserted into the SIM card holder or a patch ESIM card in the data flow unit.

The display module comprises a nixie tube and a nixie tube driving chip;

the nixie tube driving chip is connected with an I/O end of the microcontroller chip;

the microcontroller chip controls and drives the nixie tube through the nixie tube driving chip.

The metering and output module comprises a metering circuit and an output control circuit;

the metering circuit comprises a current transformer and a voltage transformer;

one end of the primary side of the current transformer is connected to a live wire, and the other end of the primary side of the current transformer is connected to one end of a normally open contact of a power output control relay; the secondary side of the current transformer inputs a current sampling signal into a current detection channel of the metering chip through a protection element and a sampling resistor;

one end of the primary side of the voltage transformer is connected to a live wire, and the other end of the primary side of the voltage transformer is connected with a zero line sequentially through a voltage reduction resistor; the secondary side of the voltage transformer inputs a sampling signal to a voltage detection channel of the metering chip through a protection element and a sampling resistor;

the metering chip is connected with the I/O end of the microcontroller chip and transmits the metering data to the microcontroller chip in real time;

one end of a normally open contact of a power output control relay of the output control circuit is connected with one end of a primary side of the current transformer, and the other end of the normally open contact is connected with the socket;

one end of a coil of the power output control relay is connected with a low-voltage working power supply 5V, and the other end of the coil is connected with a collector of the triode; the emitting electrode of the triode is grounded, and the base electrode of the triode is connected to the output end of the microcontroller chip;

and the freewheeling diode is connected in parallel with two ends of the coil of the power output control relay.

The temperature measuring module is provided with a temperature measuring circuit, one end of the temperature measuring circuit is connected with the NTC resistor by adopting a high-precision low-temperature drift resistor, and the other end of the temperature measuring circuit is connected with a +3.3V power supply;

one end of the NTC resistor is connected with GND, and a voltage division signal at the other end is directly connected to the input end of the microcontroller chip;

the 485 communication module is provided with a 485 communication circuit, the 485 communication circuit isolates a signal end of a 485 communication chip from an I/O end of a microcontroller chip IC5 through an optical coupler, networking communication is realized through a 485 communication protocol, a plurality of two-way intelligent sockets are connected in series, and data are uploaded to a server;

the key module is provided with a key circuit, the key circuit comprises a key and a jitter removing circuit, and the key is connected with the input end of the microcontroller chip.

The power supply circuit is internally provided with a protection circuit comprising a thermistor, a piezoresistor, an I-shaped inductor and a common mode inductor;

the commercial power is connected with the bridge rectifier through the protection circuit, the bridge rectifier rectifies the commercial power, and the rectified power is subjected to voltage reduction through a conversion circuit formed by the power chip, the transformer and the optocoupler.

The voice module is provided with a voice module circuit;

the voice module circuit comprises a voice driving chip and a loudspeaker;

the input of voice drive chip connects the output of microcontroller chip, and the input of speaker is connected through preventing that electrostatic tube protects to voice drive chip's output to through speaker voice broadcast.

Compared with the prior art, the invention has the following advantages:

the invention relates to a double-circuit intelligent charging socket which adopts an integrated structure, is matched with an inner shell through the structure of an outer shell, and is provided with a cover plate, wherein the cover plate structure can be used for conveniently replacing an SIM card and inspecting the inside in the later period;

the invention relates to a double-circuit intelligent charging socket which is provided with a control module and matched with a corresponding metering and output module, wherein a metering chip is connected with the end of a microcontroller chip through a specific control circuit, and metering data are transmitted to the microcontroller chip in real time; meanwhile, the control module is also provided with a display module in a matching manner, a microcontroller chip of the control module controls and drives the nixie tube through a nixie tube driving chip in the display module, so that abnormal data detected on the metering circuit can be displayed in a nixie tube mode, various charging problems can be displayed, pertinence is achieved, and maintenance personnel can conveniently and rapidly overhaul in time.

Drawings

Fig. 1 is a schematic view of an inner housing of a two-way smart charging receptacle of the present invention.

Fig. 2 is a schematic diagram of an overall structure of a two-way intelligent charging socket according to the present invention.

Fig. 3 is a schematic front view of a dual-path intelligent charging socket circuit board according to the present invention.

Fig. 4 is a schematic side view of a two-way intelligent charging socket circuit board according to the present invention.

Fig. 5 is a side view of a SIM card socket of a two-way smart charging receptacle of the present invention.

Fig. 6 is a top view of a SIM card socket of a dual-path smart charging socket according to the present invention.

Fig. 7 is a functional block diagram of a two-way smart charging receptacle of the present invention.

Fig. 8 is a schematic circuit diagram of a control module of a two-way intelligent charging socket according to the present invention.

Fig. 9 is a schematic circuit diagram of a display module of a two-way intelligent charging socket according to the present invention.

Fig. 10 is a schematic diagram of a metering and output module circuit of a dual-path intelligent charging socket according to the present invention.

Fig. 11 is a schematic circuit diagram of a temperature measurement module of a two-way intelligent charging socket according to the present invention.

Fig. 12 is a schematic circuit diagram of a 485 communication module of a two-way intelligent charging socket according to the present invention.

Fig. 13 is a schematic diagram of a wireless module circuit of a two-way intelligent charging socket according to the present invention.

Fig. 14 is a schematic circuit diagram of a key module of a two-way intelligent charging socket according to the present invention.

Fig. 15 is a schematic circuit diagram of a power module of a dual-path intelligent charging socket according to the present invention.

Fig. 16 is a schematic circuit diagram of a voice module of a two-way smart charging jack according to the present invention.

Fig. 17 is a schematic diagram of a card swiping circuit of a two-way smart charging socket of the present invention.

Wherein: 1. pasting the surface; 2. a dust plug; 3. a socket; 4. an inner housing; 5. a first circuit board; 6. a second circuit board; 7. an antenna; 8. a third circuit board; 9. a horn; 10. an outer housing; 11. a cover plate; 12. an external plug; 13. a SIM card holder; 14. a first nixie tube; 15. a second digital tube; 16. a first key; 17. and a second key.

Detailed Description

The invention is described below with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 17, a two-way intelligent charging socket comprises an inner shell 4 and an outer shell 10, wherein a surface sticker 1 is arranged on the inner shell 4, a dustproof plug 2 is arranged in a corresponding opening on the inner shell 4, a square hole is further arranged on the inner shell 4, and a matched socket 3 is arranged in the square hole;

the back end of the inner shell 4 is provided with a second circuit board 6;

the front end of the second circuit board 6 is provided with a first circuit board 5, the back end of the second circuit board is provided with a third circuit board 8, the second circuit board 6 is connected with an antenna 7 through a flat cable, the other side of the antenna 7 is installed on the inner shell 4, and the second circuit board 6 is also connected with a socket 3 and a loudspeaker 9 through a lead;

the third circuit board 8 is further provided with an SIM card holder 13, and the SIM card holder 13 is of a flip structure.

The inner shell 4 and the outer shell 10 are connected and mounted, a cover plate 11 is arranged on the outer shell 10, and an external plug 12 is further arranged in a terminal corresponding to the second circuit board 6.

In this embodiment, the socket 3 may be a five-hole socket or other sockets to adapt to socket standards in different regions.

In this embodiment, the SIM card holder 13 is set to a flip structure, so that an operator can open the cover plate 11 to conveniently replace the SIM card.

In the present embodiment, the second circuit board 6 is disposed at the back end of the housing 4 and is fixed thereto by screw fitting.

In this embodiment, the first circuit board 5 is mounted on the second circuit board 6 by pin soldering, and the third circuit board 8 is electrically connected to the second circuit board 6 by pin plugging;

in this embodiment, the second circuit board 6 is further provided with a first nixie tube 14 and a second nixie tube 15, and a first key 16 and a second key 17 are arranged below the nixie tubes in a matching manner.

As shown in fig. 7, in the present embodiment, the second circuit board 6 forms a main MCU module, the first circuit board 5 forms a radio frequency module, and the third circuit board 8 forms a wireless module.

As shown in fig. 8, in this embodiment, the control circuit of the two-way intelligent charging socket of the present invention includes a control module, where the control module is provided with a control chip circuit;

the control chip circuit adopts microcontroller chip IC5, and the I/O end of microcontroller chip IC5 links to each other with card swiping module, wireless communication module, display module, temperature measurement module, 485 communication module, button module, power module, voice module and measurement and output module.

As shown in fig. 9, in the present embodiment, the display module of the present invention is provided with a display module circuit, and the display module circuit includes a nixie tube LED1, a nixie tube LED2, and a nixie tube driving chip IC 4;

the nixie tube driving chip IC4 is connected with an I/O end of the microcontroller chip IC 5;

the microcontroller chip IC5 drives the nixie tube LED1 and the nixie tube LED2 by controlling the nixie tube driving chip IC4, thereby performing display.

As shown in fig. 10, in the present embodiment, the metering and output module of the present invention includes a metering circuit and an output control circuit;

the metering circuit comprises a current transformer CT1 and a current transformer CT 2;

one ends of primary sides of the current transformer CT1 and the current transformer CT2 are connected to a live wire, and the other ends of the primary sides of the current transformer CT1 and the current transformer CT2 are respectively connected to one ends of normally open contacts of a power output control relay K1 and a power output control relay K2;

the secondary sides of the current transformer CT1 and the current transformer CT2 input current sampling signals to a current detection channel of the metering chip IC1 through a protection element Q2, a protection element Q3, a sampling resistor R8, a sampling resistor R9, a sampling resistor R15 and a sampling resistor R16;

one end of the primary side of the voltage transformer PT1 is connected to a live wire, and the other end of the primary side of the voltage transformer PT1 is connected with a zero line through a voltage reduction resistor RV1, a voltage reduction resistor RV2, a voltage reduction resistor RV3, a voltage reduction resistor RV4, a voltage reduction resistor RV5 and a voltage reduction resistor RV 6;

the secondary side of the voltage transformer PT1 inputs a sampling signal to a voltage detection channel of the metering chip IC1 through a protection element Q1, a sampling resistor R3 and a sampling resistor R5;

the metering chip IC1 is connected with the I/O terminal of the microcontroller chip IC5, and transmits the metering data to the microcontroller chip IC5 in real time.

One ends of normally open contacts of a power output control relay K1 and a power output control relay K2 of the output control circuit are respectively connected with one ends of primary sides of a current transformer CT1 and a current transformer CT2, and the other ends of the normally open contacts are connected to a socket;

one end of a coil of the power output control relay K1 and one end of a coil of the power output control relay K2 are connected with a low-voltage working power supply 5V, and the other ends of the coils are respectively connected with the collector electrodes of a triode VT1 and a triode VT 2;

the emitting electrodes of the triode VT1 and the triode VT2 are grounded, and the base electrodes are connected to the output end of the microcontroller chip IC 5;

freewheeling diodes VD1, VD2 are connected in parallel across the coils of the relays K1, K2.

As shown in fig. 11, in this embodiment, the temperature measuring module of the present invention includes a temperature measuring circuit, where one end of the temperature measuring circuit is connected to an NTC resistor R41 by using a high-precision low-temperature drift resistor R40, and the other end is connected to a +3.3V power supply;

one end of the NTC resistor R41 is connected with GND, and the divided signal of the other end is directly connected to the input end of the microcontroller chip IC 5.

As shown in fig. 12, in this embodiment, the 485 communication module of the present invention is provided with a 485 communication circuit;

the 485 communication circuit isolates the signal terminal IC13 of the 485 communication chip from the I/O terminal of the microcontroller chip IC5 through the optocoupler U4 and the optocoupler U5, networking communication is realized through a 485 communication protocol, a plurality of double-path intelligent sockets can be connected in series, and data are uploaded to a server.

As shown in fig. 13, in the present embodiment, the wireless communication module of the invention includes a 4G wireless module circuit;

the 4G wireless module circuit comprises a 4G communication chip IC6, a power supply chip U9 and a data traffic unit;

the data flow unit is provided with a SIM card seat U8 or a patch ESIM card U6;

the I/O terminal of the 4G communication chip IC6 and the I/O terminal of the microcontroller chip IC 5;

the 4G communication chip IC6 wirelessly communicates with the cloud platform through a data flow packet provided by an external SIM card inserted into the SIM card socket U8 or a patch ESIM card U6 in the data flow unit, and the reporting of data information and the wireless control during cloud payment charging operation are realized through the setting of the 4G communication chip.

As shown in fig. 14, in the present embodiment, the key module of the present invention is provided with a key circuit;

the KEY circuit comprises a KEY1, a KEY2 and a jitter removing circuit;

the KEY1 and KEY2 are connected with the input end of the microcontroller chip IC5, and charging and parameter modification of the socket can be carried out through the KEY circuit.

As shown in fig. 15, in the present embodiment, the power supply module of the present invention is provided with a power supply circuit;

the power supply circuit is internally provided with a protection circuit comprising a thermistor PT2, a piezoresistor RV7, an I-shaped inductor L3 and a common mode inductor L1;

the commercial power is connected with bridge reactor DB1 through the protection circuit, bridge reactor DB1 rectifies the commercial power, and the rectified power is reduced in voltage through a conversion circuit composed of a power chip IC2, a transformer T1, an optical coupler U2 and an optical coupler IC 3.

The pin 10 of the transformer T1 is connected with the anode of the diode D1, the cathode of the diode D1 sequentially passes through the electrolytic capacitor C20, the ceramic capacitor C21 is connected with the input end of the voltage stabilizing chip U1, and the output end of the voltage stabilizing chip U1 outputs a 5V working power supply to supply power to the 485 communication chip IC 13;

the pin 5 of the transformer T1 is connected with the anode of the diode VD3, the output 5V working power supply is connected to the input end of the voltage stabilizing chip IC10 through the electrolytic capacitor C26, the power inductor L2, the electrolytic capacitor C27, the ceramic capacitor C25 and the TVS tube D3, and the output end of the voltage stabilizing chip IC10 outputs 3.3V working power supply to supply power for other components such as the microcontroller chip IC 5.

As shown in fig. 16, in the present embodiment, the voice module of the present invention is provided with a voice module circuit;

the voice module circuit comprises a voice driving chip IC7 and a loudspeaker J5;

the input of voice drive chip IC7 connects microcontroller chip IC 5's output, and voice drive chip IC 7's output passes through antistatic tube D5 protection access loudspeaker J5's input to through loudspeaker voice broadcast form, improve the service effect of using.

As shown in fig. 17, in the present embodiment, the card swiping module of the invention is provided with a card swiping circuit;

the card swiping circuit comprises a radio frequency chip IC11, a signal end of a radio frequency chip IC11 is connected with an I/O end of a control chip IC5, and a radio frequency chip IC11 is used for carrying out data reading and writing operations on a user IC card.

In this embodiment, the dual-path intelligent charging socket has an abnormal display function, and can match the corresponding metering and output module through the control module, connect the metering chip with the microcontroller chip end through the control circuit, and transmit the metering data to the microcontroller chip in real time; meanwhile, the control module is also provided with a display module in a matching way, and a microcontroller chip of the control module controls and drives the nixie tube through a nixie tube driving chip in the display module, so that abnormal data detected on the metering circuit can display different error codes in the form of the nixie tube, and different charging problems can be displayed.

In this embodiment, the second circuit board 6 is provided with a first key 16 and a second key 17, the first key 16 and the second key 17 are matched with the corresponding socket 3, a user can charge the socket through the keys, and a maintenance worker can enter a parameter modification interface through the first key 16 and the second key 17 to set socket parameters.

The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a double-circuit intelligent charging socket which characterized in that: the dustproof plug comprises an inner shell (4) and an outer shell (10), wherein a surface sticker (1) is arranged on the inner shell (4), a dustproof plug (2) is arranged in a corresponding opening on the inner shell (4), a square hole is also formed in the inner shell (4), and a matched socket (3) is arranged in the square hole;

the back end of the inner shell (4) is provided with a second circuit board (6);

the front end of the second circuit board (6) is provided with a first circuit board (5), the back end of the second circuit board is provided with a third circuit board (8), the second circuit board (6) is connected with an antenna (7) through a flat cable, the other side of the antenna (7) is installed on the inner shell (4), a wiring end of the antenna (7) is connected with a female seat on the circuit board (8), and the second circuit board (6) is also connected with a socket (3) and a loudspeaker (9) through a conducting wire;

an SIM card holder (13) is also arranged on the third circuit board (8), and the SIM card holder (13) is of a flip structure;

the inner shell (4) and the outer shell (10) are connected and mounted, a cover plate (11) is arranged on the outer shell (10), and an external plug (12) is further arranged in a terminal corresponding to the second circuit board (6);

the second circuit board (6) is also provided with a first nixie tube (14) and a second nixie tube (15), and a first key (16) and a second key (17) are respectively arranged below the nixie tubes in a matching manner.

2. A two-way smart charging jack as claimed in claim 1, wherein: the first circuit board (5) is installed on the second circuit board (6) in a pin welding mode, and the third circuit board (8) is electrically connected with the second circuit board (6) in a pin plugging mode.

3. The utility model provides a control circuit of double-circuit intelligent charging socket which characterized in that: the control module is provided with a control chip circuit;

the control chip circuit adopts a microcontroller chip, and an I/O end of the microcontroller chip is connected with the card swiping module, the wireless communication module, the display module, the temperature measuring module, the 485 communication module, the key module, the power supply module, the voice module and the metering and output module.

4. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the card swiping module is provided with a card swiping circuit;

the card swiping circuit comprises a radio frequency chip, a signal end of the radio frequency chip is connected with an I/O end of the control chip, and the radio frequency chip is used for carrying out data reading and writing operation on the user IC card.

5. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the wireless communication module comprises a 4G wireless module circuit;

the 4G wireless module circuit comprises a 4G communication chip, a power supply chip and a data flow unit;

the data flow unit is provided with an SIM card seat or a patch ESIM card;

the I/O end of the 4G communication chip is connected with the I/O end of the microcontroller chip;

the 4G communication chip is in wireless communication with the cloud platform through a data flow packet provided by an external SIM card inserted into the SIM card holder or a patch ESIM card in the data flow unit.

6. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the display module comprises a nixie tube and a nixie tube driving chip;

the nixie tube driving chip is connected with an I/O end of the microcontroller chip;

the microcontroller chip controls and drives the nixie tube through the nixie tube driving chip.

7. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the metering and output module comprises a metering circuit and an output control circuit;

the metering circuit comprises a current transformer and a voltage transformer;

one end of the primary side of the current transformer is connected to a live wire, and the other end of the primary side of the current transformer is connected to one end of a normally open contact of a power output control relay; the secondary side of the current transformer inputs a current sampling signal into a current detection channel of the metering chip through a protection element and a sampling resistor;

one end of the primary side of the voltage transformer is connected to a live wire, and the other end of the primary side of the voltage transformer is connected with a zero line sequentially through a voltage reduction resistor; the secondary side of the voltage transformer inputs a sampling signal to a voltage detection channel of the metering chip through a protection element and a sampling resistor;

the metering chip is connected with the I/O end of the microcontroller chip and transmits the metering data to the microcontroller chip in real time;

one end of a normally open contact of a power output control relay of the output control circuit is connected with one end of a primary side of the current transformer, and the other end of the normally open contact is connected with the socket;

one end of a coil of the power output control relay is connected with a low-voltage working power supply 5V, and the other end of the coil is connected with a collector of the triode; the emitting electrode of the triode is grounded, and the base electrode of the triode is connected to the output end of the microcontroller chip;

and the freewheeling diode is connected in parallel with two ends of the coil of the power output control relay.

8. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the temperature measuring module is provided with a temperature measuring circuit, one end of the temperature measuring circuit is connected with the NTC resistor by adopting a low-temperature drift resistor, and the other end of the temperature measuring circuit is connected with a +3.3V power supply;

one end of the NTC resistor is connected with GND, and a voltage division signal at the other end is directly connected to the input end of the microcontroller chip;

the 485 communication module is provided with a 485 communication circuit, the 485 communication circuit isolates a signal end of a 485 communication chip from an I/O end of a microcontroller chip IC5 through an optical coupler, networking communication is realized through a 485 communication protocol, a plurality of two-way intelligent sockets are connected in series, and data are uploaded to a server;

the key module is provided with a key circuit, the key circuit comprises a key and a jitter removing circuit, and the key is connected with the input end of the microcontroller chip.

9. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the power supply module is provided with a power supply circuit, and a protection circuit comprising a thermistor, a piezoresistor, an I-shaped inductor and a common mode inductor is arranged in the power supply circuit;

the commercial power is connected with the bridge rectifier through the protection circuit, the bridge rectifier rectifies the commercial power, and the rectified power is subjected to voltage reduction through a conversion circuit formed by the power chip, the transformer and the optocoupler.

10. The control circuit of a two-way smart charging receptacle of claim 4, wherein: the voice module is provided with a voice module circuit;

the voice module circuit comprises a voice driving chip and a loudspeaker;

the input of voice drive chip connects the output of microcontroller chip, and the input of speaker is connected through preventing that electrostatic tube protects to voice drive chip's output to through speaker voice broadcast.

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