CN219227593U - Communication control circuit and power supply device - Google Patents
Communication control circuit and power supply device Download PDFInfo
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- CN219227593U CN219227593U CN202223405161.8U CN202223405161U CN219227593U CN 219227593 U CN219227593 U CN 219227593U CN 202223405161 U CN202223405161 U CN 202223405161U CN 219227593 U CN219227593 U CN 219227593U
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Abstract
The application provides a communication control circuit and power supply equipment. Relates to the technical fields of outdoor power supply, circuit design and the like. Wherein the communication control circuit includes: the system comprises a switching module, a communication module, a control board, a live wire, a zero wire, a ground wire and a ground wire terminal; the switching module is respectively connected with the communication module, the control board, the ground wire and the ground wire terminal; the communication module is also respectively connected with the control board, the live wire and the zero wire. The communication control circuit and the power supply equipment are used for enabling the power supply equipment to communicate with the electric equipment, and cost of the power supply equipment is reduced.
Description
Technical Field
The application relates to the technical fields of outdoor power supplies, circuit designs and the like, in particular to a communication control circuit and power supply equipment.
Background
In many scenes such as outdoor camping, photography, self-driving tourism, car as a house companion, outdoor fishing, outdoor live broadcasting, mobile office, outdoor operation, emergency standby and the like, an outdoor power supply can supply power to electric equipment (vehicles, computers, mobile phones and the like) and communicate with the electric equipment.
In the related art, communication interfaces are generally respectively arranged on an outdoor power supply and electric equipment, so that the outdoor power supply and the electric equipment are ensured to communicate.
In the related art described above, a communication interface is provided on an outdoor power supply, so that the cost of the outdoor power supply is high.
Disclosure of Invention
The application provides a communication control circuit and power supply equipment for set up the defect that communication interface makes outdoor power supply's cost higher on solving among the prior art outdoor power supply, reach under the condition that outdoor power supply can communicate with the consumer, reduce outdoor power supply cost's purpose.
The application provides a communication control circuit, including: the system comprises a switching module, a communication module, a control board, a live wire, a zero wire, a ground wire and a ground wire terminal;
the switching module is respectively connected with the communication module, the control board, the ground wire and the ground wire terminal;
the communication module is also respectively connected with the control board, the live wire and the zero wire;
the switching module is used for controlling the ground wire to be connected with the ground wire terminal or controlling the communication module to be connected with the ground wire terminal based on a control signal provided by the control board;
the communication module is used for communicating with electric equipment through the ground wire terminal based on the alternating current transmitted by the live wire and the neutral wire under the condition that the communication module is connected with the ground wire terminal.
According to a communication control circuit provided by the application, the switching module comprises: a control unit and a switching unit;
the control unit is respectively connected with the control board and the switch unit;
the switch unit is also respectively connected with the communication module, the ground wire and the ground wire terminal.
According to the communication control circuit provided by the application, the control unit comprises: a switching tube Q1, a resistor R2 and a resistor R3;
the control end of the switching tube Q1 is connected with the control board through the resistor R1, the control end of the switching tube Q1 is connected with the output end of the switching tube Q1 through the resistor R2, the output end of the switching tube Q1 is grounded, and the input end of the switching tube Q1 is connected with the switching unit through the resistor R3.
According to the communication control circuit provided by the application, the switch unit comprises: a switch K1 and a diode D1;
the first end of the switch K1 is connected with a power supply, the second end of the switch K1 is connected with the communication module, the third end of the switch K1 is connected with the ground wire, the fourth end of the switch K1 is connected with the ground wire terminal, and the fifth end of the switch K1 is connected with the control unit;
the negative electrode of the diode D1 is connected with the first end of the switch K1, and the positive electrode of the diode D1 is connected with the fifth end of the switch K1.
According to a communication control circuit provided by the application, the communication module comprises: the device comprises a zero crossing detection unit, a signal transmission unit and a signal receiving unit;
the zero-crossing detection unit is respectively connected with the live wire, the zero wire, the control board and the power supply;
the signal sending unit is respectively connected with the live wire, the control board, the power supply and the switching module;
the signal receiving unit is respectively connected with the zero line, the control board, the power supply and the switching module.
According to the communication control circuit provided by the application, the zero-crossing detection unit comprises: the resistor R4, the resistor R5 and the input-output isolation device U1;
the first end of the input/output isolation device U1 is connected with the live wire through the resistor R4;
the second end of the input/output isolation device U1 is connected with the zero line;
the third end of the input/output isolation device U1 is grounded;
the fourth end of the input/output isolation device U1 is connected with the power supply through the resistor R5.
According to the communication control circuit provided by the application, the signal receiving unit comprises: an input-output isolation device U2, a diode D2 and a resistor R6;
the first end of the input/output isolation device U2 is connected with the cathode of the diode D2, and the anode of the diode D2 is connected with the zero line;
the second end of the input/output isolation device U2 is connected with the switching module;
the third end of the input/output isolation device U2 is grounded;
the fourth end of the input/output isolation device U2 is connected with the control board and is connected with the power supply through the resistor R6.
According to the communication control circuit provided by the application, the signal transmitting unit comprises: an input-output isolation device U3, a diode D3 and a capacitor C1;
the first end of the input/output isolation device U3 is connected with the power supply;
the second end of the input/output isolation device U3 is connected with the control board;
the third end of the input/output isolation device U3 is connected with the fifth end of the input/output isolation device U3 through the capacitor C1 at a node, and the node is connected with the switching module;
the fourth end of the input/output isolation device U3 is connected with the cathode of the diode D3, and the anode of the diode D3 is connected with the live wire.
According to a communication control circuit provided herein, the circuit further includes: an inverter, a live terminal and a neutral terminal;
the live wire port of the inverter is connected with the live wire terminal, and the live wire port is also connected with the communication module through the live wire;
the zero line ports of the inverter are respectively connected with the zero line terminals, and the zero line ports are connected with the communication module through the zero line;
the ground wire port of the inverter is connected with the ground wire terminal, and the ground wire port is connected with the communication module through the ground wire;
the inverter is also connected with the control board.
The present application also provides a power supply apparatus, comprising: any of the above communication control circuits.
The application provides a communication control circuit and power supply unit includes: the system comprises a switching module, a communication module, a control board, a live wire, a zero wire, a ground wire and a ground wire terminal; the switching module is respectively connected with the communication module, the control board, the ground wire and the ground wire terminal; the communication module is also respectively connected with the control board, the live wire and the zero line, so that the power supply equipment can communicate with the electric equipment under the condition that a communication interface is not required to be arranged on the power supply equipment, and the cost of the power supply equipment is reduced.
Drawings
For a clearer description of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an outdoor power source provided herein;
FIG. 2 is a schematic diagram of the power provided herein;
FIG. 3 is a schematic view of the internal structure of the outdoor power source provided by the present application;
fig. 4 is one of schematic structural diagrams of the communication control circuit provided in the present application;
fig. 5 is a schematic structural diagram of the switching module 10 provided in the present application;
fig. 6 is one of the schematic structural diagrams of the communication module 20 provided in the present application;
fig. 7 is a second schematic structural diagram of the communication module 20 provided in the present application;
FIG. 8 is a waveform diagram of the alternating current, zero crossing signals, ss-1 and Sr-1 provided herein;
fig. 9 is a second schematic diagram of the communication control circuit provided in the present application.
Reference numerals:
10: a switching module; 20: and a communication module.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The outdoor power supply is a multifunctional portable energy storage power supply which is internally provided with a lithium ion battery, can store electric energy and has alternating current output. The outdoor power supply has the advantages of being capable of moving, convenient to carry and the like, and is widely applicable to various scenes such as outdoor camping, photography, self-driving travel, caravan mate, field fishing, outdoor live broadcasting, mobile office, outdoor operation, emergency standby and the like.
Fig. 1 is a schematic diagram of an outdoor power supply provided herein. As shown in fig. 1, the outdoor power source includes: ase:Sub>A Direct Current (DC) outlet, ase:Sub>A DC inlet, ase:Sub>A serial bus (Universal Serial Bus, USB) type C (i.e., USB-C) input/outlet, ase:Sub>A USB-ase:Sub>A outlet, ase:Sub>A light-emitting diode (LED) display screen, ase:Sub>A screen switch, an alternating Current (Alternating Current, AC) outlet, and the like.
The vehicle charging/DC output port comprises a vehicle charging port and a DC output port.
The vehicle charging port can be used for power supply of an automobile adapter, a vehicle-mounted refrigerator, a vehicle-mounted lamp and the like.
The DC output port can be used for supplying power to lamps and the like using direct current.
The USB-C input/output port can be used for charging an outdoor power supply through a charging device with the interface Type of USB Type-C or supplying power to electric equipment with the interface Type of USB Type-C.
The USB-A output port can be used for supplying power to electric equipment with the interface Type of USB Type-A.
Optionally, the electric device with the interface Type of USB Type-C or USB Type-a may supply power to, for example, a smart phone, a smart watch, a digital camera, an electronic reader, a tablet computer, and so on.
The AC output port can be used for supplying power to electric kettles, projectors, electric fans, televisions, electric cookers, notebook computers and the like.
The LED display screen can be used for displaying the use state of the outdoor power supply. IN the case where the charge input function is activated, an "IN" indicator light IN the LED display screen is turned on. In the case where the power output function is activated, an "OUT" indicator light in the LED display screen is turned on.
The screen switch can be used for controlling the LED display screen to display the use state of the outdoor power supply or cancel to display the use state of the outdoor power supply.
Fig. 2 is a schematic diagram of power supply provided in the present application. On the basis of fig. 1, as shown in fig. 2, the connecting wire connects an AC output port on an outdoor power supply with an AC input port of electric equipment. The outdoor power supply supplies power to the electric equipment through the connecting wire.
Fig. 3 is a schematic diagram of the internal structure of the outdoor power supply provided by the present application. On the basis of fig. 1, as shown in fig. 3, the outdoor power source includes: a lithium battery pack, a battery management system (Battery Management System, BMS), an inverter, and a control board.
The control board can provide direct current with voltage values equal to 5 volts (V), 9V, 15V, 20V and the like to the outside through the USB-ase:Sub>A output port in fig. 2, can receive direct current with voltage values equal to 5V, 9V, 15V, 20V and the like through the USB-B input port in fig. 2, and can provide direct current with voltage values equal to 12V to the outside through the vehicle charging port in fig. 2.
After the powered device is electrically connected to the AC outlet (three-hole outlet in fig. 3), the hot and neutral lines of the inverter are connected to the powered device to provide AC power to the powered device, and the ground line of the inverter is connected to the housing of the powered device.
The connection relationship between the lithium battery pack, the BMS, the inverter and the control board, and the connection relationship between the inverter and the insertion hole of the AC outlet on the outdoor power source are shown in fig. 3, and will not be described in detail herein.
On the basis of fig. 3, because the outdoor power supply has no communication function, in order to enable the outdoor power supply to have the communication function, corresponding communication interfaces are generally respectively arranged on the outdoor power supply and the electric equipment, or Bluetooth (or wireless internet of things communication modules such as WIFI) are respectively arranged on the outdoor power supply and the electric equipment. The outdoor power supply is provided with a communication interface or Bluetooth, so that the cost of the outdoor power supply is high.
In order to avoid setting up communication interface or bluetooth etc. on outdoor power supply to reach the purpose that reduces outdoor power supply cost, this application provides a communication control circuit. The communication control circuit provided in the present application is described below with reference to specific embodiments.
Fig. 4 is a schematic diagram of a communication control circuit provided in the present application. As shown in fig. 4, the communication control circuit includes: the switching module 10, the communication module 20, the control board, the live wire, the neutral wire, the ground wire and the ground wire terminals.
The switching module 10 is connected to the communication module 20, the control board, the ground wire and the ground wire terminal, respectively. The communication module 20 is also connected to the control board, the hot line and the neutral line, respectively.
And a switching module 10 for controlling the ground connection to the ground terminal or controlling the communication module 20 to connect to the ground terminal based on a control signal provided from a control board.
And the communication module 20 is used for communicating with the electric equipment through the ground wire terminal based on the alternating current transmitted by the live wire and the neutral wire under the condition that the communication module 20 is connected with the ground wire terminal.
Alternatively, the control signal may be high or low.
For example, the ground connection ground terminal may be controlled in the case where the control signal supplied from the control board is at a high level, and the communication module 20 may be controlled to connect the ground terminal in the case where the control signal supplied from the control board is at a low level.
For example, the ground connection may be controlled in the case where the control signal supplied from the control board is low, and the communication module 20 may be controlled to connect the ground connection in the case where the control signal supplied from the control board is high.
In the communication control circuit that this application provided, switch module 10 connects communication module 20, control panel, ground wire and ground wire terminal respectively, and communication module 20 still connects control panel, live wire and zero line respectively, and switch module 10 can control communication module 20 and connect the ground wire terminal to make communication module 20 communicate with the consumer through the ground wire terminal, need not to set up communication interface on power supply unit, reduces power supply unit's cost.
Unlike the related art, in the related art, the communication interfaces are arranged on the outdoor power supply, so that the number of the interfaces of the outdoor power supply is large, and the safety of the outdoor power supply is reduced. In this application, under the condition that the above communication control circuit is set in the outdoor power supply, the communication module 20 and the zero line can multiplex the ground line terminal, so that the number of interfaces set on the power supply device is reduced, and the safety of the outdoor power supply is improved.
On the basis of the above embodiment, the switching module 10 will be described below with reference to fig. 5.
Fig. 5 is a schematic structural diagram of the switching module 10 provided in the present application. As shown in fig. 5, the switching module 10 includes: a control unit 101 and a switching unit 102.
The control unit 101 is connected to the control board and the switching unit 102, respectively.
The switching unit 102 is also connected to the communication module 20, the ground line and the ground line terminal, respectively.
The control unit 101 is configured to control the switching unit 102 so as to connect the ground line to the ground terminal or to connect the communication module 20 to the ground terminal based on the control signal.
For example, when the control signal is at a high level, the switching unit 102 is controlled so that the communication module 20 is connected to the ground terminal; when the control signal is at a low level, the switching unit 102 is controlled so that the ground line is connected to the ground line terminal.
In some embodiments, the control unit comprises: switching tube Q1, resistor R2 and resistor R3.
The control end of the switch tube Q1 is connected with the control board through a resistor R1, the control end of the switch tube Q1 is connected with the output end of the switch tube Q1 through a resistor R2, the output end of the switch tube Q1 is grounded, and the input end of the switch tube Q1 is connected with the switch unit 102 through a resistor R3.
The switching transistor Q1 may be, for example, a PNP transistor, an NPN transistor, or the like. Fig. 5 illustrates an example in which the switching transistor Q1 is a PNP transistor.
Optionally, the control unit may further include a capacitor C2, where the capacitor C2 and the resistor R2 are connected in parallel. The capacitor C2 may be used to suppress interference signals in the circuit.
In some embodiments, the switching unit 102 includes: a switch K1 and a diode D1.
A first end of the switch K1 is connected with the power supply VDD, a second end of the switch K1 is connected with the communication module 20, a third end of the switch K1 is connected with the ground wire, a fourth end of the switch K1 is connected with the ground wire terminal, and a fifth end of the switch K1 is connected with the control unit 101; the cathode of the diode D1 is connected to the first end of the switch K1, and the anode of the diode D1 is connected to the fifth end of the switch K1.
Alternatively, the switch K1 may be a relay, and may be other devices. Fig. 5 illustrates a relay as an example.
The diode D1 (i.e., a freewheeling diode) may be used to absorb the reverse potential generated by the relay, preventing it from breaking down the switching tube Q1.
The operation of the switching module 10 will be described with reference to fig. 5.
When the control board supplies a control signal to the switching tube Q1 at a high level, the switching tube Q1 is turned on, and the fourth terminal and the second terminal of the switching device K1 are connected, and at this time, the communication module 20 is connected to the ground terminal, and the operation mode of the ground terminal is a communication mode. When the control board supplies a control signal to the switching transistor Q1 at a low level, the switching transistor Q1 is turned off, and the fourth terminal and the third terminal of the switching transistor K1 are connected, and at this time, the ground line is connected to the ground line terminal, and the operation mode of the ground line terminal is a conductive mode.
Alternatively, in the case that the power supply apparatus is powered on for the first time, the operation mode of the ground line terminal may be a communication mode by default, that is, the control signal provided by the default control board to the switching tube Q1 is at a high level. In the case where the ground terminal is in a communication mode, the communication module 20 may communicate with the powered device through the ground terminal based on the ac power transmitted by the hot and neutral wires.
Optionally, during operation of the power supply device, the control board may switch the operation mode of the ground terminal at any time. For example, if the operation mode of the ground terminal is a communication mode, the operation mode of the ground terminal may be a conductive mode if the consumer is unresponsive for a long time after communication.
Fig. 6 is one of the schematic structural diagrams of the communication module 20 provided in the present application. As shown in fig. 6, the communication module 20 includes: a zero-crossing detection unit 201, a signal receiving unit 202, and a signal transmitting unit 203.
The zero-crossing detection unit 201 is connected to the live wire, the zero wire, the control board and the power supply, respectively.
The signal transmitting unit 203 is connected to the fire wire, the control board, the power supply and the switching module 10, respectively.
The signal receiving unit 202 is connected to the neutral line, the control board, the power supply and the switching module 10, respectively.
The zero-crossing detection unit 201 is configured to provide a zero-crossing signal (Szero) (i.e., an immediate signal) to the control board based on the alternating current transmitted by the live wire and the neutral wire. The control board provides a signal (Ss-1, see fig. 6 embodiment) or receives a signal (Sr-2, see fig. 6 embodiment) based on the zero crossing signal. The waveform of the zero crossing signal is shown in fig. 8.
The signal sending unit 203 is configured to receive Ss-1 provided by the control board, and based on an electrical signal transmitted by the fire wire, enable the electric device to receive Sr-1 through the ground terminal (see fig. 7 for an embodiment). Wherein Ss-1 and Sr-1 are the same.
The signal receiving unit 202 is configured to provide Sr-2 to the control board based on the electrical signal transmitted by the neutral line (see fig. 7 for an embodiment). Sr-2 is based on Ss-2 in the powered device (see FIG. 7 for an embodiment).
In some embodiments, the zero-crossing detection unit 201 includes: resistor R4, resistor R5, and input-output isolation device U1.
The first end of the input/output isolation device U1 is connected with the live wire through a resistor R4, the second end of the input/output isolation device U1 is connected with the zero line, the third end of the input/output isolation device U1 is grounded, and the fourth end of the input/output isolation device U1 is connected with a power supply through a resistor R5.
Alternatively, the input/output isolation device U1 may be an optocoupler, or may be another device. Fig. 6 illustrates an example of the input/output isolation device U1 as an optocoupler.
Optionally, a diode D4 may also be included in the zero crossing detection unit 201. The positive pole of the diode D4 is connected with the second end of the input-output isolation device U1, and the negative pole of the diode D4 is connected with the first end of the input-output isolation device U1. And the diode D4 is used for isolating the zero line and the fire wire and avoiding mutual interference between the zero line and the fire wire.
In some embodiments, the signal receiving unit 202 includes: an input-output isolation device U2, a diode D2 and a resistor R6. The first end of the input/output isolation device U2 is connected with the cathode of the diode D2, and the anode of the diode D2 is connected with a zero line; the second end of the input/output isolation device U2 is connected with the switching module 10; the third end of the input/output isolation device U2 is grounded; the fourth terminal of the input/output isolation device U2 is connected with the control board and is connected with a power supply through a resistor R6.
Alternatively, the input/output isolation device U2 may be an optocoupler, or may be another device.
Optionally, a resistor R7 may be connected in series between the first terminal of the input-output isolation device U2 and the cathode of the diode D2.
Optionally, a resistor R8 may be connected in series between the fourth terminal of the input-output isolation device U2 and the control board.
Optionally, the signal receiving unit 202 further includes a capacitor C3, one end of the capacitor C3 is connected between the resistor R8 and the control board, and the other end of the capacitor C3 is grounded.
In some embodiments, the signal transmitting unit 203 includes: an input-output isolation device U3, a diode D3 and a capacitor C1. The first end of the input/output isolation device U3 is connected with a power supply; the second end of the input/output isolation device U3 is connected with the control board; the third end of the input/output isolation device U3 is connected with the fifth end of the input/output isolation device U3 at a node P through a capacitor C1, and the node is connected with the switching module 10; the fourth end of the input/output isolation device U3 is connected with the cathode of the diode D3, and the anode of the diode D3 is connected with the live wire.
Optionally, the input/output isolation device U3 may be a thyristor optocoupler, or may be other devices.
Alternatively, the signal transmission unit 203 may further include a resistor R9, a resistor R10, a resistor R11, and a resistor R12. The resistor R9 is connected in parallel with the capacitor C1, the resistor R10 is connected in series between the fourth end of the input/output isolation device U3 and the cathode of the diode D3, the resistor R11 is connected in series between the first end of the input/output isolation device U3 and the power supply, and the resistor R12 is connected in series between the second end of the input/output isolation device U3 and the control board.
Alternatively, in the case where the communication module 20 shown in fig. 6 is provided in the power supply apparatus, the following communication module 20 shown in fig. 7 may be provided in the power consumption apparatus, accordingly; alternatively, in the case where the communication module 20 shown in fig. 7 is provided in the power supply apparatus, the communication module 20 shown in fig. 6 is provided in the power consumption apparatus accordingly.
Unlike the prior art, in the prior art, a communication interface or a bluetooth (or a wireless internet of things communication module such as WIFI) is arranged on the electric equipment, so that the cost of the electric equipment is higher. In the application, the communication module of fig. 6 or fig. 7 is arranged on the electric equipment, so that the arrangement of a communication interface on the electric equipment can be avoided, the cost of the electric equipment is reduced, and the number of interfaces of the electric equipment is reduced.
Fig. 7 is a second schematic structural diagram of the communication module 20 provided in the present application. Based on fig. 6, correspondingly, the communication module 20 shown in fig. 7 includes: a zero-crossing detection unit 301, a signal reception unit 302, and a signal transmission unit 303.
The zero-crossing detection unit 301 is identical to the zero-crossing detection unit 201, and will not be described again here.
Optionally, in the signal receiving unit 302, a first end of the input/output isolation device U2 is connected to one end of the electric group R13 through a resistor R7, a cathode of the diode D2, and the other end of the electric group R13 is a communication line, and a second end of the input/output isolation device U2 is connected to a zero line. The connection manner of the third terminal and the fourth terminal of the input/output isolation device U2 in the signal receiving unit 302 is the same as the connection manner of the third terminal and the fourth terminal of the input/output isolation device U2 in the signal receiving unit 202, and will not be described herein.
Optionally, in the signal sending unit 303, a fifth end of the input-output isolation device U3 is connected to a live wire, and a fourth end of the input-output isolation device U3 is connected to a communication line through a cathode of the diode D3, an anode of the diode D3, and the resistor R10; the third end of the input/output isolation device U3 is connected with the live wire through a capacitor C1 and a resistor R9 which are connected in parallel. The connection manner of the first end and the second end of the input/output isolation device U3 in the signal sending unit 303 is the same as the connection manner of the first end and the second end of the input/output isolation device U3 in the signal sending unit 203, and will not be described herein.
In the case where the communication module 20 shown in fig. 6 is provided in the power supply apparatus and the communication module 20 shown in fig. 7 is provided in the electric device, the description will be made in the process of the two communication modules 20 communicating through the ground terminal.
In the process of transmitting Ss-1 by the signal transmitting unit 203 and receiving Sr-1 by the signal receiving unit 302 (Ss-1 and Sr-1 are the same), the signal transmitting unit 203 receives the low level (Ss-1) supplied from the control board during the positive half cycle of the alternating current, and the input-output isolation device U3 in the signal transmitting unit 203 is turned on based on Ss-1 and supplies the high level to the ground terminal through the communication line. The communication line in the signal receiving unit 302 receives a high level through the ground terminal, and the input-output isolation device U2 is turned on based on the high level, so that the input-output isolation device U2 in the signal receiving unit 302 outputs a low level (Sr-1) through the resistor R8, that is, ss-1 and Sr-1 are the same. Accordingly, the signal transmitting unit 203 receives the high level (Ss-1) provided by the control board, the input-output isolation device U3 in the signal transmitting unit 203 is turned off, the input-output isolation device U2 in the signal receiving unit 302 is turned off, and the power supply in the signal receiving unit 302 outputs the high level (Sr-1) through the R6 and the resistor R8, that is, ss-1 and Sr-1 are the same. During the negative half-cycle of the alternating current, sr-1 is high, regardless of whether Ss-1 is low or high, at which time the two communication modules 20 do not communicate.
In the process of the signal transmitting unit 303 transmitting the signal Ss-2 and the signal receiving unit 202 receiving the signal Sr-2, the process of the signal receiving unit 302 receiving the signal Sr-1 is similar to that of the signal transmitting unit 203 transmitting Ss-1, and will not be repeated here.
In the present application, the levels of Ss-1 and Sr-1 are the same, and the levels of Ss-2 and Sr-2 are the same, so as to realize the communication function between the communication modules shown in FIGS. 6 and 7.
Alternatively, the communication control circuit provided in the present application may implement, for example, the following communication functions.
For example, the power supply device sends the power level (e.g., high, medium, low) to the power consumption device, and the power consumption device adjusts its operation (e.g., in the case that the power level is low, the power consumption device reduces the screen brightness or adopts the low power consumption mode to operate) according to the power level, so as to increase the duration of the power supply device and improve the user experience.
For example, the electric equipment provides operation information (such as operation power) for the power supply equipment, the power supply equipment calculates duration based on the operation information and the current electric quantity of the power supply equipment, and the duration is displayed on an LED display screen of the power supply equipment so as to improve metering accuracy of the power supply equipment.
Alternatively, the length of data transmitted or received at one time may be set to N bits. Alternatively, N may be equal to 2, 4, 8, etc. In the case where N is equal to 8, the duration of transmitting one bit of data may be equal to one mains cycle, a low indication end bit may be used after the 8 bits of data are all transmitted, and a high level indication stop bit of two consecutive mains cycles may be used after the end bit to achieve byte synchronization.
Fig. 8 is a waveform diagram of alternating current, zero crossing signal, ss-1, and Sr-1 provided herein. Illustratively, as shown in fig. 8, for example, the alternating current has a frequency of 50 hertz (Hz), the zero crossing signal is high during the positive half-cycles of the alternating current signal, and the zero crossing signal is low during the negative half-cycles of the alternating current signal.
For example, in the case where the zero crossing signal is high, ss-1 is low, and correspondingly, sr-1 is low; when the zero crossing signal is at a high level, ss-1 is at a high level, and correspondingly Sr-1 is at a high level, so that the communication module 20 shown in fig. 6 and the communication module 20 shown in fig. 7 can communicate.
Fig. 9 is a second schematic diagram of the communication control circuit provided in the present application. For example, on the basis of fig. 4, as shown in fig. 9, the communication control circuit further includes: an inverter, a live terminal and a neutral terminal.
The live wire port of the inverter is connected with the live wire terminal, and the live wire port is also connected with the communication module 20 through the live wire; the neutral line ports of the inverter are respectively connected with the neutral line terminals, and the neutral line ports are connected with the communication module 20 through the neutral line; a ground wire port of the inverter is connected to the ground wire terminal, and the ground wire port is connected to the communication module 20 through the ground wire; the inverter is also connected with the control board.
In this application, the power supply VDD may be direct current having a voltage value equal to 5V, or 3.3V, etc. supplied from the control board.
The application also provides power supply equipment comprising the communication control circuit provided by any one of the above examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A communication control circuit, comprising: the system comprises a switching module, a communication module, a control board, a live wire, a zero wire, a ground wire and a ground wire terminal;
the switching module is respectively connected with the communication module, the control board, the ground wire and the ground wire terminal;
the communication module is also respectively connected with the control board, the live wire and the zero wire;
the switching module is used for controlling the ground wire to be connected with the ground wire terminal or controlling the communication module to be connected with the ground wire terminal based on a control signal provided by the control board;
the communication module is used for communicating with electric equipment through the ground wire terminal based on the alternating current transmitted by the live wire and the neutral wire under the condition that the communication module is connected with the ground wire terminal.
2. The circuit of claim 1, wherein the switching module comprises: a control unit and a switching unit;
the control unit is respectively connected with the control board and the switch unit;
the switch unit is also respectively connected with the communication module, the ground wire and the ground wire terminal.
3. The circuit of claim 2, wherein the control unit comprises: a switching tube Q1, a resistor R2 and a resistor R3;
the control end of the switching tube Q1 is connected with the control board through the resistor R1, the control end of the switching tube Q1 is connected with the output end of the switching tube Q1 through the resistor R2, the output end of the switching tube Q1 is grounded, and the input end of the switching tube Q1 is connected with the switching unit through the resistor R3.
4. The circuit of claim 2, wherein the switching unit comprises: a switch K1 and a diode D1;
the first end of the switch K1 is connected with a power supply, the second end of the switch K1 is connected with the communication module, the third end of the switch K1 is connected with the ground wire, the fourth end of the switch K1 is connected with the ground wire terminal, and the fifth end of the switch K1 is connected with the control unit;
the negative electrode of the diode D1 is connected with the first end of the switch K1, and the positive electrode of the diode D1 is connected with the fifth end of the switch K1.
5. The circuit of any one of claims 1 to 4, wherein the communication module comprises: the device comprises a zero crossing detection unit, a signal transmission unit and a signal receiving unit;
the zero-crossing detection unit is respectively connected with the live wire, the zero wire, the control board and the power supply;
the signal sending unit is respectively connected with the live wire, the control board, the power supply and the switching module;
the signal receiving unit is respectively connected with the zero line, the control board, the power supply and the switching module.
6. The circuit of claim 5, wherein the zero crossing detection unit comprises: the resistor R4, the resistor R5 and the input-output isolation device U1;
the first end of the input/output isolation device U1 is connected with the live wire through the resistor R4;
the second end of the input/output isolation device U1 is connected with the zero line;
the third end of the input/output isolation device U1 is grounded;
the fourth end of the input/output isolation device U1 is connected with the power supply through the resistor R5.
7. The circuit of claim 5, wherein the signal receiving unit comprises: an input-output isolation device U2, a diode D2 and a resistor R6;
the first end of the input/output isolation device U2 is connected with the cathode of the diode D2, and the anode of the diode D2 is connected with the zero line;
the second end of the input/output isolation device U2 is connected with the switching module;
the third end of the input/output isolation device U2 is grounded;
the fourth end of the input/output isolation device U2 is connected with the control board and is connected with the power supply through the resistor R6.
8. The circuit of claim 5, wherein the signal transmitting unit comprises: an input-output isolation device U3, a diode D3 and a capacitor C1;
the first end of the input/output isolation device U3 is connected with the power supply;
the second end of the input/output isolation device U3 is connected with the control board;
the third end of the input/output isolation device U3 is connected with the fifth end of the input/output isolation device U3 through the capacitor C1 at a node, and the node is connected with the switching module;
the fourth end of the input/output isolation device U3 is connected with the cathode of the diode D3, and the anode of the diode D3 is connected with the live wire.
9. The circuit of any one of claims 1 to 4, further comprising: an inverter, a live terminal and a neutral terminal;
the live wire port of the inverter is connected with the live wire terminal, and the live wire port is also connected with the communication module through the live wire;
the zero line ports of the inverter are respectively connected with the zero line terminals, and the zero line ports are connected with the communication module through the zero line;
the ground wire port of the inverter is connected with the ground wire terminal, and the ground wire port is connected with the communication module through the ground wire;
the inverter is also connected with the control board.
10. A power supply apparatus comprising the communication control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223405161.8U CN219227593U (en) | 2022-12-19 | 2022-12-19 | Communication control circuit and power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223405161.8U CN219227593U (en) | 2022-12-19 | 2022-12-19 | Communication control circuit and power supply device |
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| Publication Number | Publication Date |
|---|---|
| CN219227593U true CN219227593U (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223405161.8U Active CN219227593U (en) | 2022-12-19 | 2022-12-19 | Communication control circuit and power supply device |
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| Country | Link |
|---|---|
| CN (1) | CN219227593U (en) |
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- 2022-12-19 CN CN202223405161.8U patent/CN219227593U/en active Active
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