CN115962556A - Air conditioner control circuit, method, system and device - Google Patents

Abstract

The application relates to an air conditioner control circuit, method, system and device, the air conditioner control circuit includes: the system comprises an outer unit main control module, an outer unit communication module, a standby communication module and a power supply control module of the air conditioner; the standby communication module is used for receiving a remote controller signal of the air conditioner and outputting the remote controller signal to the external unit communication module; the outdoor unit communication module is used for transmitting the remote controller signal to the outdoor unit main control module; the outdoor unit main control module is used for outputting a power supply control signal to the power supply control module according to the remote controller signal; the power supply control module is used for controlling a power supply signal output by an external unit switching power supply of the air conditioner according to the power supply control signal, so that the output of the external unit switching power supply of the air conditioner can be controlled through the power supply control module, low-power-consumption standby is realized, and the problem that the low-power-consumption standby cannot be realized in an external-internal power supply mode of the conventional air conditioner is solved.

Description

Air conditioner control circuit, method, system and device

technical field

The present application relates to the technical field of air conditioning, in particular to an air conditioning control circuit, method, system and equipment.

Background technique

With the rapid development of air-conditioning technology, air-conditioning equipment such as household inverter air conditioners are becoming more and more popular, which brings great convenience to people's life, work and study.

At present, household frequency conversion air conditioners usually include indoor units and outdoor units, and their power supply modes are mainly divided into internal and external power supply modes and external and external power supply modes. Among them, the internal power supply mode refers to the way that the indoor unit supplies power to the outdoor unit, and the AC power of the internal unit in the internal power supply mode is rectified and filtered to obtain a direct current DC, such as 310 volts (Volt, V ) DC, and can be provided to the main loads of the DC bus such as internal fan, electric heating belt and switching power supply through the DC bus, so that the DC can obtain +5V, +12V, +15V and other low-voltage weak current power supplies through the switching power supply, Supply power to weak current loads. The external power supply mode refers to the way that the outdoor unit supplies power to the indoor unit. For example, the existing air conditioner can adopt the hybrid power supply mode of photovoltaic energy storage. Supply DC power to power the indoor unit.

In the specific implementation, the indoor unit of the existing air conditioner needs to receive the control signal of the remote controller through the remote control receiving module in the standby mode, so as to realize restart and work again. Therefore, the remote control receiver module of the indoor unit must work in the standby mode. At this time, the switching power supplies of the indoor unit and the outdoor unit must work at the same time, resulting in greater standby power consumption of the air conditioner.

Contents of the invention

The present application provides an air conditioner control circuit, method, system and equipment to solve the problem that the existing air conditioner cannot realize low power consumption standby.

In the first aspect, an air conditioner control circuit is characterized in that it includes: an external unit main control module of the air conditioner, an external unit communication module, a standby communication module and a power control module;

The standby communication module is used to receive the remote control signal of the air conditioner, and output the remote control signal to the external unit communication module;

The external machine communication module is used to transmit the remote control signal to the external machine main control module;

The main control module of the external machine is used to output a power control signal to the power control module according to the signal of the remote controller;

The power control module is configured to control the power supply signal output by the switching power supply of the external unit of the air conditioner according to the power control signal.

Optionally, the air conditioner control circuit also includes: an internal unit communication module and an internal unit main control module;

Wherein, the internal machine communication module is connected to the external machine communication module through a communication bus, and the communication bus includes a first communication line, a second communication line, a third communication line and a fourth communication line;

The standby communication module includes a first normally closed switch and an infrared receiving submodule;

The first end of the infrared receiving sub-module is electrically connected to the first end of the external machine communication module through the first communication line, and the second end of the infrared receiving sub-module is connected to the first normally closed switch. The first end is electrically connected, the third end of the infrared receiving sub-module is electrically connected to the second end of the first normally closed switch, and the fourth end of the infrared receiving sub-module is connected to the second communication line through the second communication line. The second end of the communication module of the external machine is electrically connected;

The third terminal of the first normally closed switch is electrically connected to the second power supply terminal of the external machine communication module through the third communication line, and the four terminals of the first normally closed switch are electrically connected through the fourth The communication line is electrically connected to the first power terminal of the communication module of the external unit, and the control terminal of the first normally closed switch is electrically connected to the main control module of the internal unit;

The first normally closed switch is used to provide the first power signal provided by the first power supply terminal of the external machine communication module to the third terminal of the infrared receiving sub-module, and transmit the first power signal provided by the external machine communication module The power supply reference signal provided by the second power supply terminal is provided to the second terminal of the infrared receiving sub-module;

The infrared receiving submodule is configured to receive the remote control signal, and generate the remote control signal based on the remote control signal in combination with the first power supply signal and the power reference signal, and, through the The second communication line outputs the remote control signal to the second end of the external machine communication module;

The main control module of the internal unit is configured to control the first normally closed switch to turn off when the signal of the remote controller is a power-on wake-up signal.

Optionally, the infrared receiving sub-module includes a first infrared receiving tube and a second infrared receiving tube;

The first end of the first infrared receiving tube is electrically connected to the first communication line, and the second end of the first infrared receiving tube is electrically connected to the first end of the first normally closed switch;

The first end of the second infrared receiving tube is electrically connected to the second end of the first normally closed switch, and the second end of the second infrared receiving tube is electrically connected to the second communication line.

Optionally, the air conditioner control circuit further includes: the switching power supply of the internal unit of the air conditioner and the weak current load of the external unit;

Wherein, the power supply signal includes the power supply signal of the internal machine and the weak current load power supply signal of the external machine, and the power control module includes a first normally open switch and a second normally open switch;

The input end of the first normally open switch is electrically connected to the DC output end of the external machine switching power supply, the output end of the first normally open switch is electrically connected to the internal machine switching power supply, and the second normally open switch The input end is electrically connected to the weak current output end of the switching power supply of the external machine, the output end of the second normally open switch is electrically connected to the light current load of the external machine, and the control end of the first normally open switch is connected to the second normally open switch. The control ends of the switch are electrically connected to the power control signal end of the main control module of the external machine;

The power supply control signal is used to control the first normally open switch and the second normally open switch to enter a closed conduction state;

The first normally open switch is used to provide the power supply signal of the internal machine power supply to the internal machine switching power supply in the closed conduction state;

The second normally open switch is used to provide the external machine weak current load power supply signal to the external machine weak current load in the closed conduction state.

Optionally, the air conditioner control circuit also includes: a remote control receiving module;

The power input terminal of the remote control receiving module is electrically connected to the weak current output terminal of the switching power supply of the internal unit, and the signal output terminal of the remote control receiving module is electrically connected to the main control module of the internal unit of the air conditioner;

The weak current output terminal of the switching power supply of the internal unit is used to provide a working power signal for the remote control receiving module;

The remote control receiving module is used to receive a remote control signal based on the working power signal, and provide the remote control signal to the main control module of the internal machine.

In the second aspect, the embodiment of the present application provides an air conditioner control method. The air conditioner includes an external unit main control module, an external unit communication module, a standby communication module, and a power supply control module. The air conditioner control method includes:

receiving the remote control signal of the air conditioner through the standby communication module, and outputting the remote control signal to the external unit communication module;

Transmitting the remote controller signal to the main control module of the external machine through the external machine communication module;

triggering the main control module of the external machine to output a power control signal to the power control module according to the signal of the remote controller;

According to the power control signal, the power supply signal output by the switching power supply of the external unit of the air conditioner is controlled through the power control module.

Optionally, the power supply signal includes the power supply signal of the internal machine and the weak current load power supply signal of the external machine, and the main control module of the external machine is triggered to output a power control signal to the power control module according to the signal of the remote control , including: determining whether the remote controller signal belongs to the power-on wake-up signal of the air conditioner through the external machine main control module; if the remote controller signal belongs to the power-on wake-up signal, triggering The main control module of the external machine outputs the power control signal to the power control module. Wherein, the power control signal is used to trigger the power control module to output the internal unit power supply signal to the internal unit switching power supply of the air conditioner, and trigger the power control module to output the external unit power supply signal to the external unit weak current load. Power supply signal for weak current loads.

Optionally, the internal unit switching power supply is used to supply power to the internal unit main control module of the air conditioner, and the air conditioner control method further includes: after the internal unit main module is powered on, through the internal unit main control module The module controls the standby communication module to enter the power-off state, and the remote controller signal is a signal received by the standby communication module in the standby closed state.

Optionally, the standby communication module includes a first normally closed switch, and controlling the standby communication module to enter the power-on and off state through the main control module of the internal machine includes: controlling the main control module of the internal machine to The first normally closed switch is off, and the power-on off state is a state corresponding to the first normally closed switch being off.

In a third aspect, an embodiment of the present application provides an air-conditioning control system, including: the air-conditioning control circuit according to any one of the first aspect.

In a fourth aspect, an embodiment of the present application provides an air conditioner, including: the air conditioner control system as described in the third aspect.

To sum up, the air conditioner control circuit, method, system and equipment provided by the embodiments of the present application receive the remote control signal of the air conditioner through the standby communication module, and output the remote control signal to the external unit communication module, so that the remote control can be connected to the remote control through the external unit communication module. The signal is transmitted to the main control module of the external unit, so that the main control module of the external unit can output the power control signal to the power control module according to the remote control signal, so that the power control module can control the power supply output by the switching power supply of the air conditioner according to the power control signal The signal is used to control the output of the switching power supply of the air conditioner's external unit through the power control module to achieve low power consumption standby, which solves the problem that the existing air conditioner's external power supply method cannot achieve low power consumption standby.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of an air conditioner control circuit provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an air conditioner control circuit provided in an optional embodiment of the present application;

Fig. 3 is a schematic diagram of the principle of a low-power standby circuit of an externally driven internally split household air conditioner provided by an embodiment of the present application;

FIG. 4 is a flow chart of steps of an air-conditioning control method provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an air-conditioning control system provided in an embodiment of the present application;

Fig. 6 is a structural block diagram of an air conditioner provided by an embodiment of the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

In the related technology, the alternating current of the external unit is rectified and filtered to obtain direct current DC, and then a variable direct current is obtained through a power factor correction (Power Factor Correction, PFC) circuit. Under the circumstances, the variable DC power of 310V-380V can be obtained through the PFC circuit, and then the variable DC power can be connected to the DC bus to supply power for the load on the DC bus. Among them, the loads on the DC bus mainly include cooling fans, compressors, electric floor heating and switching power supplies. The variable direct current can obtain +5V, +12V, +15V and other low-voltage weak current power supplies through switching power supply to supply weak current loads.

In the internal power supply mode of the air conditioner, the indoor unit of the air conditioner is the main control of the entire air conditioner, so the main control of the indoor unit cannot be powered off to realize the control of the entire air conditioner. In the standby mode, the switching power supply of the indoor unit is the main power consumption unit, so that the power consumption of the air conditioner in the standby mode is about 1 watt (Watt, W)W. The inventor of the present application found that: in the standby mode, the indoor unit (i.e., the indoor unit) of the internally driven external air conditioner can cut off the power supply to the outdoor unit, so that only the indoor unit works, and the external unit is completely powered off and does not work, and in the standby mode The high-voltage load components such as the fan and electric heating of the indoor unit stop working, but the indoor unit needs to receive the control signal from the remote control through the remote control receiving module to realize restart and work again. Therefore, the remote control receiver module of the indoor unit in standby mode It must work. At this time, the switching power supply of the internal unit continues to work to supply power for the remote control receiving module and the main chip control circuit module of the internal unit; consumption, which is the main source of 1W power consumption in standby mode.

In addition, in the air conditioner with photovoltaic energy storage hybrid power supply mode, the outdoor unit is connected to AC mains power, photovoltaic DC power, and battery DC power to supply DC power to the indoor unit through the outdoor unit. It can be seen that the external unit (that is, the outdoor unit) of the externally driven internal air conditioner is the main control of the entire air conditioner, so the main control of the external unit cannot be powered off, so that the control of the entire air conditioner can be realized through the diplomatic main control. In standby mode, the internal unit of the existing air conditioner needs to receive the control signal of the remote control through the remote control receiving module to realize restart and work again. Therefore, the remote control receiver module of the internal unit must work in standby mode, that is, the internal unit The switching power supply and the switching power supply of the external unit must work at the same time, resulting in a large standby power consumption of the externally driven internal air conditioner.

Based on the above, one of the core ideas of the embodiments of the present application is to provide an air conditioner control circuit, method, system and equipment, by adding a standby communication module and a power control module to the air conditioner, in standby mode through standby communication The module receives the remote control signal of the air conditioner, and outputs the remote control signal to the communication module of the external unit, so that the signal of the remote control can be transmitted to the main control module of the external unit through the communication module of the external unit, so that the main control module of the external unit can transmit the remote control signal to The power control module outputs the power control signal, and then the power supply signal output by the switching power supply of the external unit of the air conditioner can be controlled through the power control module according to the power control signal, that is, the output of the switching power supply of the external unit of the air conditioner is controlled by the power control module, so that the air conditioner is in the standby state. Turn off the switching power supply of the air conditioner's internal unit and cut off the non-essential weak load power supply of the air conditioner to realize low-power standby, which solves the problem that the existing air conditioner cannot achieve low-power standby.

Referring to FIG. 1 , it shows a schematic structural diagram of an air conditioner control circuit provided by an embodiment of the present application. Exemplarily, as shown in FIG. 1 , the air conditioner control circuit provided by the embodiment of the present application may specifically include: an external unit main control module 130 of the air conditioner, an external unit communication module 120, a standby communication module 110, and a power control module 140; , the standby communication module 110 can be used to receive the remote control signal of the air conditioner, and can output the remote control signal to the external machine communication module 120; the external machine communication module 120 can be used to transmit the remote control signal The external machine main control module 130; the external machine main control module 130 can be used to output a power control signal to the power control module 140 according to the remote control signal; the power control module 140 can be used to output a power control signal according to the The power supply control signal controls the power supply signal output by the switching power supply of the external unit of the air conditioner.

In this embodiment, the standby communication module 110 can receive the remote control signal in the standby mode of the air conditioner, and the output terminal of the standby communication module 110 can be electrically connected to the input terminal of the external machine communication module 120, so that the standby communication module 110 can be based on the The remote control signal outputs the remote control signal to the external machine communication module 120, and the external machine communication module 120 can be electrically connected with the external machine main control module 130, so that the external machine communication module 120 can transmit the received remote control signal to the external machine The main control module 130 is used to trigger the external machine main control module 130 to output a power control signal to the power control module 140 through the remote control signal. Specifically, after receiving the remote control signal transmitted by the external machine communication module 120, the external machine main control module 130 may output a power control signal to the power control module 140 according to the remote control signal, so that the power control module 140 may The power supply control signal controls the power supply signal output by the switching power supply of the external unit of the air conditioner to achieve the purpose of controlling the output of the switching power supply of the external unit of the air conditioner, and then can turn off the switching power supply of the internal unit of the air conditioner and cut off the non-essential weak load power supply of the air conditioner when the air conditioner is in standby mode, realizing Low power consumption standby, which solves the problem that the existing air conditioner's external power supply method cannot achieve low power consumption standby.

It can be seen that the air conditioner control circuit provided in this embodiment can receive the remote control signal of the air conditioner through the standby communication module 110, and output the remote control signal to the external unit communication module 120, so as to transmit the remote control signal to the external unit communication module 120. The main control module 130 of the external unit can trigger the main control module 130 of the external unit to output the power control signal to the power control module 140 according to the signal of the remote controller, so that the power control module 140 can control the switching power output of the external unit of the air conditioner according to the power control signal The power supply signal can then control the output of the switching power supply of the air conditioner external unit through the power control module 140 to achieve low power consumption standby, which solves the problem that the existing air conditioner cannot achieve low power consumption standby.

In an optional implementation manner, the air conditioner control circuit provided in this embodiment may further include: an internal unit communication module connected to the external unit communication module 120 through a communication bus; The communication bus establishes a communication connection with the outdoor unit communication module 120, so that the indoor unit and the outdoor unit of the air conditioner can communicate normally and realize the control of the air conditioner.

Referring to FIG. 2 , it shows a schematic structural diagram of an air conditioner control circuit provided in an optional embodiment of the present application. On the basis of the above embodiments, optionally, the air conditioner control circuit provided in this embodiment may also include: an internal unit communication module 220 and an internal unit main control module 210; the internal unit main control module 210 can control the The standby communication module 110 enters the power-on disconnection state, so that the standby communication module 110 is disconnected and no longer receives the remote control signal of the air conditioner. Wherein, the remote control signal received by the standby communication module 110 may be a signal received by the standby communication module 110 in the standby closed state.

Specifically, the internal machine communication module 220 in this embodiment can be connected to the external machine communication module 120 through a communication bus, and the communication bus can include a first communication line A, a second communication line B, a third communication line C and The fourth communication line D; the first end of the standby communication module 110 can be electrically connected to the first end of the external machine communication module 120 and the first end of the internal machine communication module 220 through the first communication line A, and the first end of the standby communication module 110 The two ends can be electrically connected to the second end of the external machine communication module 120 and the second end of the internal machine communication module 220 through the second communication line B, and the third end of the standby communication module 110 can be electrically connected to the second end of the standby communication module 110 through the third communication line C. The second power terminal GND-485 of the external machine communication module 120 is electrically connected to the third end of the internal machine communication module 220, and the fourth end of the standby communication module 110 can be connected to the external machine communication module 120 through the fourth communication line D. The first power supply terminal 5V-485 is electrically connected to the fourth terminal of the internal unit communication module 220, so that the standby communication module 110 can output the remote control signal to the external unit communication module 120 after receiving the remote control signal in the air conditioner standby mode. device signal. Wherein, the second end of the standby communication module 110 can be used to output the remote control signal to the second end of the external machine communication module 120, so that the external machine communication module 120 can receive the remote control signal, so that the external machine communication module 120 can send The remote control signal is transmitted to the main control module 130 of the external machine.

In an optional embodiment of the present application, the standby receiving module 110 may include a first normally closed switch K-T-N and an infrared receiving sub-module 111, so that the standby receiving module 110 can receive the remote control signal of the air conditioner through the infrared receiving sub-module 111, and It can be electrically connected to the first power supply terminal 5V-485 of the external unit communication module 120 and the second power supply terminal GND-485 of the external unit communication module 120 through the first normally closed switch K-T-N, so as to combine the external unit based on the received remote control signal The first power signal provided by the first power terminal 5V-485 of the communication module 120 and the power reference signal provided by the second power terminal GND-485 generate a remote control signal. Specifically, the first end of the infrared receiving sub-module 111 can be electrically connected to the first end of the external machine communication module 120 and the first end of the internal machine communication module 220 through the first communication line A, so The second end of the infrared receiving sub-module 111 is electrically connected to the first end of the first normally closed switch K-T-N, and the third end of the infrared receiving sub-module 111 is connected to the second end of the first normally closed switch K-T-N. Electrically connected, the fourth end of the infrared receiving sub-module 111 is electrically connected to the second end of the external machine communication module 120 and the second end of the internal machine communication module 220 through the second communication line B, so as to The remote control signal is output to the external machine communication module 120 through the fourth terminal of the infrared receiving sub-module 111 . In addition, the third terminal of the first normally closed switch K-T-N is connected to the second power supply terminal GND-485 of the external machine communication module 120 and the third terminal of the internal machine communication module 220 through the third communication line C. Electrical connection: The four terminals of the first normally closed switch K-T-N are connected to the first power supply terminal 5V-485 of the external machine communication module 120 and the first power terminal 5V-485 of the internal machine communication module 220 through the fourth communication line D. The four terminals are electrically connected, and the control terminal of the first normally closed switch K-T-N is electrically connected to the internal unit main control module 210, so that the internal unit main control module 210 can control the first normally closed switch K-T-N to be disconnected after power-on , so that the infrared receiving sub-module 111 no longer transmits the remote control signal to the external machine communication module 120 . Wherein, the first normally closed switch K-T-N can be used to provide the first power signal provided by the first power supply terminal 5V-485 of the external machine communication module 120 to the third terminal of the infrared receiving sub-module 111, and The power supply reference signal provided by the second power supply terminal GND-485 of the external machine communication module 120 can be provided to the second terminal of the infrared receiving sub-module 111; the infrared receiving sub-module 111 can specifically be used to receive remote control signals, And based on the signal of the remote controller, combined with the first power signal provided by the first power terminal 5V-485 of the external machine communication module 120 and the power reference signal provided by the second power terminal GND-485, the remote controller can be generated signal, and output the remote control signal to the second end of the external machine communication module 120 through the second communication line B; the internal machine main control module 210 can be used to turn on the In the case of a wake-up signal, the first normally closed switch K-T-N is controlled to be turned off.

In an optional implementation, the infrared receiving sub-module 111 in this embodiment may include a first infrared receiving tube DT1 and a second infrared receiving tube DT2, so that the infrared receiving sub-module 111 can receive The tube D-T1 and the second infrared receiving tube D-T2 receive the remote control signal, and can output the remote control signal to the external machine communication module 120 through the second infrared receiving tube D-T2. Wherein, the first end of the first infrared receiving tube DT1 can be electrically connected with the first communication line A, so that the first end of the first infrared receiving tube DT1 can communicate with the external machine communication module through the first communication line A The first end of 120 and the first end of the internal machine communication module 220 are connected, and the second end of the first infrared receiving tube D-T1 can be electrically connected with the first end of the first normally closed switch K-T-N, so that the first infrared receiving The second end of the tube D-T1 can be connected to the second power supply terminal GND-485 of the external machine communication module 120 through the first normally closed switch K-T-N, and the first end of the second infrared receiving tube D-T2 can be connected to the first normally closed switch K-T-N. The second end of the closed switch K-T-N is electrically connected, so that the first end of the second infrared receiving tube D-T2 can be connected to the first power supply end 5V-485 of the external machine communication module 120 through the first normally closed switch K-T-N, so that The infrared receiving sub-module 111 can generate a remote control signal based on the received remote control signal combined with the first power signal provided by the first power terminal 5V-485 of the external machine communication module 120 and the power reference signal provided by the second power terminal GND-485 , and the second end of the second infrared receiving tube DT2 is electrically connected to the second communication line, so that the infrared receiving sub-module 111 can output the remote control signal to the second end of the external machine communication module 120 through the second communication line B.

It should be noted that the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 in this embodiment are both infrared receiving tubes, which can exhibit unidirectional conductivity under normal conditions; , the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 conduct in reverse. The remote control signal may be an infrared signal sent by the air conditioner remote control through infrared transmission.

For example, when the remote controller sends out a high-level infrared signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 conduct in reverse, as shown in Figure 2, the current of the second communication line B at this time level to high level, the level of the first communication line A at this time changes to low level, the external machine communication module 120 can transmit the high level signal as a remote control signal to the external machine main control module through the photoelectric isolation module 130; when the remote controller sends out a low-level infrared signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are reversely cut off, showing the characteristics of a common diode, and the current of the second communication line B is level transition back to low level, the level of the first communication line A at this time transitions back to high level, the external machine communication module 120 can transmit the low level signal as a remote control signal to the external machine main control module 130 through the photoelectric isolation module , so that the main control module 130 of the external unit can output a power control signal to the power control module 140 according to the signal of the remote controller, thereby realizing the power-on restart signal transmission in the standby mode of the air conditioner.

In an embodiment of the present application, the main control module 130 of the outdoor unit may include the central processing unit W-MCU of the outdoor unit, so that the outdoor unit of the air conditioner can realize the control of the outdoor unit of the air conditioner through the central processing unit W-MCU, and the outdoor unit The central processing unit W-MCU can be connected with the external unit communication module 120 through the photoelectric isolation module, and then can establish a communication connection with the air conditioner internal unit through the photoelectric isolation module and the external unit communication module 120 to realize air conditioning control; wherein, the external unit communication The module 120 can include a 485 communication unit to establish a 485 communication connection with the internal communication module 220 through the 485 communication unit, so that the external communication module 120 can communicate with the internal communication module 220 through the 485 communication. Of course, in addition to the 485 communication unit, the external machine communication module 120 may also include other device units, such as the second resistor R2, the third resistor R3, etc., which are not specifically limited in this embodiment. .

In addition, the main control module 130 of the indoor unit may include a central processing unit N-MCU of the internal unit, so that the internal unit of the air conditioner can realize the control of the indoor unit of the air conditioner through the central processing unit N-MCU, and the central processing unit N-MCU of the internal unit The MCU can be connected with the internal unit communication module 220 through the photoelectric isolation module, and then can establish a communication connection with the external unit of the air conditioner through the photoelectric isolation module and the internal unit communication module 220 to realize air conditioning control; wherein, the external unit communication module 220 can include 485 communication unit, to establish a 485 communication connection with the external machine communication module 120 through the 485 communication unit, so that the internal machine communication module 220 can communicate with the external machine communication module 120 through the 485 communication mode. Certainly, besides the 485 communication unit, the internal machine communication module 120 may also include other device units, such as the fourth resistor R4, the fifth resistor R5, etc., which is not specifically limited in this embodiment.

In an optional implementation, the air conditioner control circuit provided in this embodiment may further include: the internal unit switching power supply 230 of the air conditioner; wherein, the power supply signal includes the internal unit power supply signal, and the power control module 140 includes The first normally open switch K-N-P, the input terminal of the first normally open switch K-N-P is electrically connected to the DC output terminal of the external machine switching power supply 240, and the output terminal of the first normally open switch K-N-P is electrically connected to the internal machine switching power supply 230 , the control terminal of the first normally open switch K-N-P is electrically connected to the power control signal terminal of the external machine main control module 130; the power control signal is used to control the first normally open switch K-N-P to enter closed conduction State: the first normally open switch K-N-P is used to provide the power supply signal of the internal unit power supply to the internal unit switching power supply 230 in the closed conduction state, so as to supply power for the internal unit switching power supply 230 to realize the operation of the air conditioner External power supply mode.

In an optional embodiment of the present application, the air conditioner control circuit may further include: an external unit weak current load 250; wherein, the power supply signal also includes an external unit weak current load power supply signal, and the power control module 140 further includes a second Normally open switch K-W-2; the input terminal of the second normally open switch K-W-2 is electrically connected to the weak current output terminal of the external machine switching power supply 240, and the output terminal of the second normally open switch K-W-2 is connected to the external machine switching power supply 240. The weak current load 250 of the external machine is electrically connected, and the control terminal of the second normally open switch K-W-2 is electrically connected with the power control signal terminal of the main control module 130 of the external machine; the power control signal is used to control the second normally open switch. The open switch K-W-2 enters the closed conduction state, so that the second normally open switch K-W-2 can provide the external machine weak current load power supply signal to the external machine weak current load 250 in the closed conduction state.

It can be seen that the air conditioner control circuit provided in this embodiment can include the air conditioner’s external unit main control module 130 , external unit communication module 120 , standby communication module 110 , power supply control module 140 , internal unit communication module 220 and internal unit main control module 210 In addition, it may also include other device modules of the air conditioner, such as the internal switching power supply 230, the external switching power supply 240, and the external weak load 250 of the air conditioner, which are not specifically limited in this embodiment. Wherein, the power supply signal may include an internal machine power supply signal and an external machine weak current load power supply signal, the power control module 140 may include a first normally open switch K-N-P and a second normally open switch K-W-2, and the first The input terminal of a normally open switch K-N-P can be electrically connected with the DC output terminal of the external machine switching power supply 230, and the output terminal of the first normally open switch K-N-P can be electrically connected with the internal machine switching power supply 230, and the first normally open switch The control terminal of K-N-P can be electrically connected with the power control signal terminal of the main control module 130 of the external machine, so that the main control module 130 of the external machine can output a power control signal to the control terminal of the first normally open switch K-N-P to control the second A normally open switch K-N-P enters the closed conduction state, so that the first normally open switch K-N-P can provide the power supply signal of the internal machine power supply to the internal machine switching power supply 230 in the closed conducting state, and the internal machine switching power supply 230 supplies power The input end of the second normally open switch K-W-2 is electrically connected to the weak current output end of the external machine switching power supply 230, and the output end of the second normally open switch K-W-2 is electrically connected to the external machine weak current load 250 , the control terminal of the second normally open switch K-W-2 is electrically connected to the power supply control signal terminal of the external machine main control module 130, so that the external machine main control module 130 can be connected to the second normally open switch K-W-2 The control terminal outputs a power control signal to control the second normally open switch K-W-2 to enter the closed conduction state, so that the second normally open switch K-W-2 can provide the power supply signal of the weak current load of the external machine to the weak current of the external machine in the closed conduction state. The load 250 is used to supply power to the weak current load 250 of the external machine.

In an optional implementation, the air conditioner control circuit provided in this embodiment may further include: a remote control receiving module 260; the power input terminal of the remote control receiving module 260 is electrically connected to the weak current output terminal of the internal unit switching power supply 230 , the signal output terminal of the remote control receiving module 260 is electrically connected to the main control module 210 of the indoor unit of the air conditioner, so that the remote control receiving module 260 can provide the received remote control signal to the main control module 210 of the indoor unit, so as to realize the start-up of the air conditioner Control after reboot. Wherein, the weak current output terminal of the internal unit switching power supply 230 can be used to provide a working power signal for the remote control receiving module 260; the remote control receiving module 260 can be used to receive a remote control signal based on the working power signal, And provide the remote controller signal to the main control module 210 of the internal machine. It should be noted that the remote control signal may refer to a signal sent by the remote control, such as a high-level signal sent by the remote control, or a low-level signal sent by the remote control, etc., which is not specifically limited in this embodiment .

In an embodiment of the present application, the weak current output terminal of the internal switch power supply 230 may include one or more output terminals, and each output terminal may output signals with the same or different voltage values, such as the weak current output of the internal switch power supply 230 The terminal can contain 4 output terminals. For example, the first output terminal can output a voltage signal of +15V, the second output terminal can output a voltage signal of +12V, and the third output terminal can output a voltage signal of +5V. The four output terminals can output a 0V GND signal, which is not limited in this embodiment. Wherein, the +5V voltage signal output by the third output terminal can be stabilized by the voltage stabilizing module in the internal machine to generate the working power signal VCC1, and the working power signal VCC1 can be provided to the main control module 210 of the internal machine for The main control module 210 of the internal machine supplies power to ensure that the main control module 210 of the internal machine can work normally after being turned on and restarted. For example, as shown in Figure 3, the voltage stabilizing module in the internal unit can generate a +3.3V voltage signal based on the +5V voltage signal output by the third output terminal as the working power signal VCC1, which is the photoelectric isolation module in the internal unit. and the central processing unit N-MCU in the main control module 210 of the internal machine to supply power.

Referring to FIG. 3 , it shows a schematic diagram of the principle of a low-power standby circuit of an externally driven internally split household air conditioner provided by an embodiment of the present application. After the internal unit of the air conditioner receives the shutdown signal, it waits for a time T, and if it does not receive the startup signal within this time period, the standby mode is established. Specifically, the high-power loads in the air conditioner, such as the indoor unit fan and electric heating, stop working, and the central processing unit W-MCU of the outdoor unit controls the first normally open switch K-N-P to cut off to stop the power supply to the indoor unit. At this time, the first The normally closed switch K-T-N is closed when the power is off; at the same time, the central processing unit W-MCU of the external unit can control the second normally open switch K-W-2 to cut off the unnecessary external unit weak current load 250 power supply, such as cutting off the +12V weak current load power supply, + 15V weak current load power supply, etc., so as to complete the establishment of standby mode. Wherein, both the first normally open switch K-N-P and the second normally open switch K-W-2 can be normally open relays, and the first normally closed switch K-T-N can be normally closed open relays, so that by using relays normally closed relays and normally open relays, The power consumption in the standby mode of the air conditioner is reduced, and the purpose of air conditioner control can be achieved.

In an embodiment of the present application, the infrared receiving module of the remote control receiving module 260 of the internal unit can only identify the infrared signal of the carrier within a fixed frequency, for example, it can only identify the infrared signal of the 30kHz-60kHz carrier, To prevent the interference of infrared signals. Therefore, after the power button is pressed, the remote controller in this embodiment can first send out a high-level signal with a duration of t1, then send out a low-level signal for t2, and then send out a high-level signal for t3, so as to The signal in this process is used as the start-up wake-up signal of the air conditioner to prevent the interference of natural light, and then send a normal start-up carrier signal, so that the remote control receiving module 260 of the internal unit can receive and recognize the start-up carrier signal sent by the remote control. Wherein, the power-on wake-up signal can trigger the main control module 130 of the external unit to output a power control signal to the power control module 140, so that the power control module 140 can control the power supply signal output by the switching power supply 240 of the external unit of the air conditioner according to the power control signal, so as to provide the power supply for the internal unit. The switching power supply 230 supplies power, so that the remote control receiving module 260 of the internal unit can work normally, such as being able to receive and recognize the start-up carrier signal sent by the remote control.

Specifically, the standby communication module 110 in the air conditioner internal unit can receive the remote control signal in the standby mode of the air conditioner through the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2, and can The remote control signal is transmitted to the external machine communication module 120 through the second infrared receiving tube DT2 and the second communication line B, so that the remote control signal is transmitted to the external machine main control module 130 through the external machine communication module 120, Realize the transmission of the remote control signal in standby mode to the external unit. Wherein, the remote control signal may refer to a signal sent by the remote control. Specifically, when the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 do not receive the signal from the remote control, they show the characteristics of a common diode, and at this time the level of the first communication line A is high level, The level of the second communication line B is low level. When the air conditioner is in standby mode, when the remote controller sends a high-level signal, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 conduct in reverse, showing low resistance characteristics, that is, the first The infrared receiving tube D-T1 and the second infrared receiving tube D-T2 can be understood as wires, the level of the second communication line B at this time changes to high level, and the level of the first communication line A at this time changes to Low level, at this time, the 485 communication unit in the external machine communication module 120 can transmit the high level signal as a remote control signal to the central processing unit W-MCU of the external machine through the photoelectric isolation module, so that the central processing unit W-MCU of the external machine -MCU can receive high-level signals; when the remote controller sends out low-level signals, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 are reversely cut off, showing diode unidirectional conductivity. The level of the second communication line B changes back to low level at this time, and the level of the first communication line A changes back to high level at this time, the 485 communication unit in the external machine can use the low level signal as a remote control through the photoelectric isolation module The device signal is transmitted to the central processing unit W-MCU of the external machine, so that the central processing unit W-MCU of the external machine can receive the high-level signal.

In the process of starting and restarting the air conditioner, if the remote control presses the start button, the first infrared receiving tube D-T1 and the second infrared receiving tube D-T2 can receive the starting signal from the remote control, that is, receive the The remote control signal can be transmitted to the external machine through the second communication line B, so that the 485 communication unit in the external machine can transmit the remote control signal to the central processing unit of the external machine through the photoelectric isolation module W-MCU; when the central processing unit W-MCU of the external machine receives a complete high-low-high special signal, it can be considered to have received a power-on wake-up signal from the internal machine, and then the external machine can be controlled through the power control module 140 The power output by the switching power supply 240 supplies signal signals to supply power to the internal unit. Specifically, the central processing unit W-MCU of the outdoor machine acts as the main control chip of the external machine, and can control the first normally open switch K-N-P to conduct power supply to the internal machine; at this time, the internal machine switching power supply can output such as +5V, + Various DC signals such as 12V and 0V are used to supply power for various loads in the internal unit. After the switching power supply of the internal unit works normally, the central processing unit N-MCU of the internal unit can work normally based on the DC signal provided by the switching power supply of the internal unit. Disconnect the standby communication module 110 from the 485 communication bus, so that the integrity of the communication circuit of the internal and external machine 485 is restored, and communication is attempted. Wherein, when the power supply of the internal unit is normally established, the remote control receiving module 260 can start to receive the start-up carrier signal sent by the remote control subsequently, and can establish communication with the internal and external units to realize information interaction. The first normally open switch K-N-P may be a normally open relay or other types of normally open electronic switches, which is not specifically limited in this embodiment.

In an optional embodiment of the present application, the outdoor unit of the air conditioner can be powered by a hybrid photovoltaic energy storage method, as shown in Figure 3, the outdoor unit can be controlled by a maximum power point tracking (Maximum Power Point Tracking, MPPT) solar controller. The photovoltaic direct current is connected to the DC bus to realize photovoltaic input; and the PFC circuit can be connected to the AC mains to realize the mains input; and the DC power of the battery can be directly connected to the DC bus to realize the battery input. This is not limited.

Referring to FIG. 4 , it shows a flowchart of steps of an air conditioner control method provided by an embodiment of the present application. The air conditioner control method provided by the embodiment of the present application can be applied to the air conditioner, and the air conditioner can include an external unit main control module, an external unit communication module, a standby communication module, and a power control module, as shown in Figure 4, the embodiment of the present application provides The air conditioning control method may include the following steps:

Step 410, receiving the remote control signal of the air conditioner through the standby communication module, and outputting the remote control signal to the external unit communication module;

Step 420, transmit the signal of the remote controller to the main control module of the external machine through the communication module of the external machine;

Step 430, triggering the main control module of the external machine to output a power control signal to the power control module according to the signal of the remote controller;

Step 440: Control the power supply signal output by the switching power supply of the external unit of the air conditioner through the power control module according to the power control signal.

It can be seen that the embodiment of the present application receives the remote control signal of the air conditioner through the standby communication module, and outputs the remote control signal to the external unit communication module, and then transmits the remote control signal to the external unit main control module through the external unit communication module, so that according to the remote control The device signal triggers the main control module of the external unit to output a power control signal to the power control module, so that the power supply signal output by the switching power supply of the external unit of the air conditioner can be controlled through the power control module according to the power control signal, so that the external unit of the air conditioner can be controlled through the power control module The output of the switching power supply realizes low-power standby, which solves the problem that the existing air conditioner's external power supply method cannot achieve low-power standby.

In an optional embodiment of the present application, the power supply signal includes the power supply signal of the internal machine and the weak current load power supply signal of the external machine. In this embodiment, the main control module of the external machine is triggered to supply The control module outputs the power control signal, including: determining whether the remote control signal belongs to the power-on wake-up signal of the air conditioner through the external machine main control module; if the remote control signal belongs to the power-on wake-up signal, then based on the The power-on wake-up signal triggers the main control module of the external machine to output the power control signal to the power control module. Wherein, the power control signal is used to trigger the power control module to output the internal unit power supply signal to the internal unit switching power supply of the air conditioner, and trigger the power control module to output the external unit power supply signal to the external unit weak current load. Power supply signal for weak current loads.

In an optional implementation manner of the present application, the internal unit switching power supply is used to supply power to the internal unit main control module of the air conditioner, and the air conditioner control method provided in this embodiment further includes: powering on the internal unit main control module Afterwards, the main control module of the internal unit controls the standby communication module to enter the power-off state, and the remote control signal is a signal received by the standby communication module in the standby closed state.

In an optional embodiment of the present application, the standby communication module includes a first normally closed switch. In this embodiment, the main control module of the internal machine controls the standby communication module to enter the power-on and off state, which may specifically include: The first normally closed switch is controlled to be turned off by the main control module of the internal unit, and the power-on off state is a state corresponding to the first normally closed switch being turned off.

Referring to FIG. 5 , it shows a schematic structural diagram of an air conditioning control system provided by an embodiment of the present application. Furthermore, the embodiment of the present application also provides an air-conditioning control system. As shown in FIG. An air conditioner control circuit provided by an embodiment.

Referring to FIG. 6 , it shows a structural block diagram of an air conditioner provided by an embodiment of the present application. Further, the embodiment of the present application also provides an air conditioner, including the air conditioner control system provided in any one of the above embodiments. As shown in FIG. 6 , the air conditioner 600 includes: an air conditioner control system 610 ; wherein the air conditioner control system 610 may be the air conditioner control system described in the above embodiments.

In an optional implementation manner, the air conditioner provided in the embodiment of the present application may include: a processor, and a memory for storing executable instructions of the processor; wherein, the processor is configured to execute any of the above-mentioned An air conditioner control method described in a method embodiment.

The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the air-conditioning control method as described in any of the foregoing embodiments are implemented.

It should be noted that, for the method, system, air-conditioning equipment and medium embodiment, since it is basically similar to the embodiment of the air-conditioning control circuit, the description is relatively simple. For the related parts, please refer to the part of the description of the embodiment of the air-conditioning control circuit. .

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Professionals should further realize that the units and algorithm steps described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The specific implementation manners described above have further described the purpose, technical solutions and beneficial effects of the application in detail. It should be understood that the above descriptions are only specific implementation modes of the application and are not intended to limit the scope of the application. Scope of protection: All modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims (11)

1. An air conditioner control circuit, comprising: the system comprises an outer unit main control module, an outer unit communication module, a standby communication module and a power supply control module of the air conditioner;

the standby communication module is used for receiving a remote controller signal of the air conditioner and outputting the remote controller signal to the outdoor unit communication module;

the outdoor unit communication module is used for transmitting the remote controller signal to the outdoor unit main control module;

the external machine main control module is used for outputting a power supply control signal to the power supply control module according to the remote controller signal;

and the power supply control module is used for controlling a power supply signal output by an external unit switching power supply of the air conditioner according to the power supply control signal.

2. The air conditioner control circuit according to claim 1, further comprising: the indoor unit communication module and the indoor unit main control module;

the communication bus comprises a first communication line, a second communication line, a third communication line and a fourth communication line;

the standby communication module comprises a first normally-closed switch and an infrared receiving submodule;

the first end of the infrared receiving submodule is electrically connected with the first end of the outer machine communication module through the first communication line, the second end of the infrared receiving submodule is electrically connected with the first end of the first normally closed switch, the third end of the infrared receiving submodule is electrically connected with the second end of the first normally closed switch, and the fourth end of the infrared receiving submodule is electrically connected with the second end of the outer machine communication module through the second communication line;

the third end of the first normally closed switch is electrically connected with the second power end of the outer machine communication module through the third communication line, the fourth end of the first normally closed switch is electrically connected with the first power end of the outer machine communication module through the fourth communication line, and the control end of the first normally closed switch is electrically connected with the inner machine main control module;

the first normally-closed switch is used for providing a first power supply signal provided by a first power supply end of the external unit communication module to a third end of the infrared receiving submodule and providing a power supply reference signal provided by a second power supply end of the external unit communication module to a second end of the infrared receiving submodule;

the infrared receiving submodule is used for receiving the remote controller signal, generating the remote controller signal by combining the first power supply signal and the power supply reference signal based on the remote controller signal, and outputting the remote controller signal to the second end of the outdoor unit communication module through the second communication line;

and the internal machine main control module is used for controlling the first normally closed switch to be switched off under the condition that the remote controller signal is a starting-up awakening signal.

3. The air conditioner control circuit of claim 2, wherein the infrared receiving sub-module comprises a first infrared receiving tube and a second infrared receiving tube;

the first end of the first infrared receiving tube is electrically connected with the first communication wire, and the second end of the first infrared receiving tube is electrically connected with the first end of the first normally closed switch;

the first end of the second infrared receiving tube is electrically connected with the second end of the first normally closed switch, and the second end of the second infrared receiving tube is electrically connected with the second communication line.

4. The air conditioner control circuit according to any one of claims 2 to 3, further comprising: an internal unit switching power supply and an external unit weak current load of the air conditioner;

the power supply control module comprises a first normally open switch and a second normally open switch;

the input end of the first normally open switch is electrically connected with the direct current output end of the external unit switching power supply, the output end of the first normally open switch is electrically connected with the internal unit switching power supply, the input end of the second normally open switch is electrically connected with the weak current output end of the external unit switching power supply, the output end of the second normally open switch is electrically connected with the external unit weak current load, and the control end of the first normally open switch and the control end of the second normally open switch are both electrically connected with the power supply control signal end of the external unit main control module;

the power supply control signal is used for controlling the first normally-open switch and the second normally-open switch to enter a closed conducting state;

the first normally open switch is used for providing the power supply signal of the internal machine power supply to the internal machine switch power supply in the closed conducting state;

and the second normally open switch is used for providing the power supply signal of the external machine weak current load to the external machine weak current load in the closed conducting state.

5. The air conditioner control circuit according to claim 4, further comprising: a remote control receiving module;

the power supply input end of the remote control receiving module is electrically connected with the weak current output end of the indoor unit switching power supply, and the signal output end of the remote control receiving module is electrically connected with an indoor unit main control module of the air conditioner;

the weak current output end of the internal machine switching power supply is used for providing a working power supply signal for the remote control receiving module;

the remote control receiving module is used for receiving a remote control signal based on the working power supply signal and providing the remote control signal for the internal machine main control module.

6. An air conditioner control method is characterized in that the air conditioner comprises an outer unit main control module, an outer unit communication module, a standby communication module and a power supply control module, and the method comprises the following steps:

receiving a remote controller signal of the air conditioner through the standby communication module, and outputting the remote controller signal to the outdoor unit communication module;

transmitting the remote controller signal to the external machine main control module through the external machine communication module;

triggering the outer machine main control module to output a power control signal to the power control module according to the remote controller signal;

and controlling a power supply signal output by an external unit switching power supply of the air conditioner through the power control module according to the power control signal.

7. The air conditioner control method according to claim 6, wherein the power supply signal includes an internal machine power supply signal and an external machine weak current load power supply signal, and the triggering the external machine main control module to output the power control signal to the power control module according to the remote controller signal comprises:

determining whether the remote controller signal belongs to a starting-up wake-up signal of the air conditioner through the external unit main control module;

if the remote controller signal belongs to the startup wake-up signal, triggering the external unit main control module to output the power supply control signal to the power supply control module based on the startup wake-up signal; the power supply control signal is used for triggering the power supply control module to output the internal machine power supply signal to an internal machine switching power supply of the air conditioner, and triggering the power supply control module to output the external machine weak current load power supply signal to an external machine weak current load.

8. The air conditioner control method according to claim 7, wherein the indoor unit switching power supply is configured to supply power to an indoor unit main control module of the air conditioner, and the air conditioner control method further includes:

after the internal machine host module is powered on, the standby communication module is controlled to enter a power-on off state through the internal machine main control module, and the remote controller signal is a signal received by the standby communication module in a standby on state.

9. The air conditioner control method according to claim 7, wherein the standby communication module includes a first normally closed switch, and the controlling the standby communication module to enter the power-on off state by the indoor unit main control module includes:

the first normally closed switch is controlled to be disconnected through the internal machine main control module, and the starting-up disconnection state is a state corresponding to the disconnection of the first normally closed switch.

10. An air conditioning control system, comprising: the air conditioner control circuit according to any one of claims 1 to 6.

11. An air conditioning apparatus, characterized by comprising: the air conditioning control system of claim 10.

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